Depth analysis of Apple Fusion Drive hybrid disk program

When the considerable effect moderate price SSD appears for the first time in 2008, the people feel that this technology is quite magical. With the passage of time, NAND and SSD improvement in price, but the price of mechanical hard or an order of magnitude lower than it. AnandTech's Anand Lal Shimpi said: I have been advocating a combination of SSD and HDD solutions. You can buy an SSD large enough to install the operating system, applications, and even one or two games and then loaded, and then everything else on HDD RAID-1 array. This method is used in the desktop, the effect is very good, but you have to manually manage files whereabouts. OEM is how to deal with this problem? I have always been curious. Because the the Education user's own hands, large, infrequently used files on a drive, and the other things to put on another drive, does not seem feasible. Intel 6 series chipset using Smart Response hybrid hard drive technology, a 20GB SLC SSD cache as a traditional hard drive, hoping to achieve a speed boost.

Since then, some other SSD caching solutions have also appeared. However, most of them used is inexpensive, small-capacity, of the mSATA SSD ineffective. Recently, OEM with SSD cache suppliers to barely meet the the certified minimum requirements of the ultra-extreme. Generally, this manner experience very poor. HDD manufacturers are trying to solve this problem, but they are a way to add a small amount of NAND mechanical hard drive. This usually makes the the HDD speed becomes faster, but with the SSD is still a far cry from the. NAND capacity storage devices has actually big enough to accommodate all of your data, the practice seems to be: you stick with 8MB L3 cache, in fact, you could have an extra few hundred dollars to buy a 16GB. Once you understand the benefits of the latter, the former seems to be meaningless compromise. Apple is one of the first to realize that this issue OEM. All only with NAND mainstream mobile devices (iPhone, iPad, and the MacBook Air). Recently, Apple's professional laptop even beginning to move in the direction of pure SSD forward (with Retina display MacBook Pro). Apple Mac does not participate in the capital of the low-price competition, to abandon HDD much easier. Even so, the 6 Mac (MBA, rMBP, MBP, Mac mini, iMac and Mac Pro), Apple is now shipping, only two default configuration without HDD. The rest are equipped with old-fashioned mechanical hard disk. IMac this device into a a pure SSD more difficult. Although ultra-extreme users (especially laptop users) have become accustomed to the equipment, do not have much storage space and a limited amount of storage used to desktops do not necessarily bear it.

Apple's approach this problem with other SSD / HDD hybrid solution is not much different. The difference is only in the SSD portion size as well as the software layer. Acquaintance Fusion Drive The new Mac mini and iMac can choose Apple's hybrid hard drive solutions Fusion Drive. It only has two versions: 1TB and 3TB. The 1TB only applies to iMac and upgrade the Mac mini ($ 799), 3TB applies only to the 27-inch iMac.

Fusion Drive is a 1TB or 3TB HDD (2.5-inch or 3.5-inch) with a 128GB Samsung PM830 SSD combination. In testing, I used a 27 inches iMac, 1TB of Fusion Drive. Apple Fusion Drive SSD cache capacity is much higher than the general program (most OEM 8GB to 24GB NAND). And Apple Fusion Drive selected Samsung PM830, SSD we tested in the best combination of performance and reliability. Although I personally prefer Link A Media or Intel S3700, after all, they have a good, stable performance, but for Apple, PM830 may be a more affordable option.

Of course, Fusion Drive previous hybrid / cache solutions, but the real difference is that the software part. Fusion Drive is not simply borrow Intel Smart Response Technology, it comes to OS X Logical Volume Manager Core Storage virtualization storage. The Core Storage earliest version of lions, which allows the operating system to treat multiple physical disks as one logical volume. Apple initially Core Storage to encrypt the entire disk, but now, the use of Core Storage has been expanded to the cougar Fusion Drive. Creating Fusion Drive is very simple. If you have multiple drives, you can use a simple terminal command to create a Fusion the Drive. If you buy one with a Fusion Drive Mac Apple automatically done for you all. Traditional SSD cache architecture, the Fusion not really cache the Drive, it will be based on the frequency of visits and the available space between SSD and HDD mobile data. A Fusion Drive capacity, in fact, is the sum of its components. In other words, a 1TB Fusion Drive capacity is actually 1TB + 128GB; 3TB Fusion Drive capacity is 3TB + 128GB.

The latest version of the "Disk Utility" (Disk Utility) Fusion Drive appears as a drive label Macintosh HD. But Apple did not try to hide its Fusion Drive Properties: system report, or use as third-party tools such as iStat Menus, you can see two drive situation:

128GB SSD capacity is 121.33GB. Note: Since OS X 10.6, Apple began radix display capacity of 10. Count you'll know how much space is used as a spare area:

Approximately 11.7% of the 128GiB NAND set aside as spare area, the standard Mac 128GiB SSD is the same, but this ratio is higher than the 6.7%. Increase the proportion of spare area help to improve the consistency of the performance, I personally hope that Samsung SSD can have 25% of the spare area. Boot Camp Fusion Drive, you can create additional partitions, these partitions are on the HDD. Fusion Drive Secret I tested with a new 27-inch iMac. In the beginning, I used a 128KB order of write operations (queue depth of 1), and use iStat Menus to monitor the status of the two drives, I found only SSD to receive the first write operation, there is no activity on the HDD. SSD write speed is 322MB / s. After writing to 117GB, HDD took over the write activity, the initial velocity of about 133 to 175MB / s.

Preliminary tests confirmed, Fusion Drive does use two drives. Written to the original 117GB SSD, 1TB next directly written to the HDD. I think that it is scheduled priority: Fusion Drive assume that SSD has enough free space (which will be discussed in detail), the first attempts to write to the SSD. Next, I would like to conduct random IO test, because this is the HDD SSD in terms of performance over the place, usually SSD cache or mixed programs fall short of the place. I first tried a worst case scenario: random write test covers all of the logical block address. In view of the total capacity of the Fusion Drive is 1.1TB, from this test, we can understand how Apple LBA (logical block address) mapping between the two drives. The results are interesting, but not too surprised. SSD and HDD write activities, but HDD some more (consume a greater proportion of the available LBA). Ordinary 4KB (QD16) random write test results about 0.51MB / s, it is subject to the restrictions of the Fusion Drive HDD. However, after the end of the mandate of the random write direct data movement between HDD and SSD. LBA is randomly selected, just the same (or similar space) address may be selected more than once, these logic blocks immediately be marked for upgrade to SSD. This is the first time I saw the Fusion Drive initiative to move data between drives. Full coverage for consumer-grade SSD random write test may be a bit unfair, is even more unfair for SSD / HDD hybrid solution. The Fusion Drive To learn the ability to deal with random IO, random write test the limit of the LBA 8GB. The results are very different. In the first round, the average speed of about 7 to 9MB / s, IO vast majority occur in the SSD, a small portion on the HDD. Three minutes after the test, I'm waiting for the Fusion Drive mobile data, and then repeated again. In the second round, the speed jumped 21.9MB / s, the more IO occurred in the SSD, the write activity on the HDD is still visible.

Figure: Most random write occurs on the SSD, but there is still part of the HDD to move a lot of data and after remapping LBA, almost all of the random write to the SSD, the speed is a lot faster In the third attempt, almost all of the random write on the SSD speeds of up to 98MB / s of peak debris is increased, the speed drops to a minimum 35MB / s. In my opinion, Apple seems to be based on the frequency of visits to LBA dynamically mapped to the SSD, which is a very positive performance boost. Ultimately, this is a significant difference between the usual SSD caching scheme and Fusion Drive. Most SSD caching solution seems to read the frequency-based Fusion Drive seems (at least in part) to consider which the LBA is frequently write and map them to the SSD.

It should be noted, that the subsequent random write test result is not the same. When I am filled with more data and applications Fusion Drive (to 80%) is filled with real data and applications, I did not see the random write performance to achieve such a high level again. In each run, I see a very short period of time the data is moved around, but the the random IO occurrence in HDD and SDD ratio is about 7:1. Given the difference in capacity between the two drives, this proportion has great significance. If your work load contains a large number of random writes, covering all of the available space, Fusion Drive may be less suitable for you. However, such workloads are mostly corporate users, so you should not be a problem. Data finesse explore Apple publicity Fusion Drive, when it comes to file and application-level data movement, but in real use, data can move 128KB file blocks between SSD and HDD. Fs_usage tools, you can see the inner workings of Apple Fusion Drive. File to 128KB of file blocks in the drive between the mobile, and this is determined by the frequency of use of the file blocks. Customer workloads is often the order of the (pseudo-random) in the worst case, we can say with more certainty that, if you are in a 128KB file blocks access an LBA you actually access the same space more more LBA. The data migration process seems to mainly occur during idle, although I have also seen in the IO load is lighter, the drive between migration activities.

The rapid migration trigger mechanism is very interesting. Once the file is copied or created, the application starts, or other IO activity is completed, immediately begin data migration between SSD and HDD. When you fill Fusion Drive, the amount of data moving between the SSD and the HDD shrink dramatically. The thing is supposed to be like this. Infrequently accessed data should be placed on the HDD, the really important things will stay on the SSD. When the Fusion Drive At the time of writing, Apple would not be so positive release of the data on the SSD.

The data migration process itself is very simple, the data is marked for the promotion and demotion, it is physically copied to new storage devices, and then it was removed. In the migration process, if there is a power failure, Fusion Drive will not cause any loss of data, the source block will be removed only when a 128KB file two copies of the block in place. Apple last year on it, but I only saw told me. The 128KB file blocks to move data between the HDD and SSD, Apple can write the SSD part defragmentation. The Fusion Drive write preferred destination SSD (less than 128KB file block, random and pseudo-random write), any migration from the HDD to the SSD but are large pieces written in the order, if the drive there is a lot of debris, which will trigger a garbage block recovery process. SSD performance will certainly be reduced over time, but the process helps to maintain its performance, because SSD is almost always been run in a filled condition, and that it will receive various Irrelevant write. I mentioned earlier, I hope Apple more PM830 NAND space reserved for the spare area. I suspect that Apple did not set aside more spare area for cost considerations. Application experience In real use, Fusion Drive can give us what kind of experience it? Put simply, it's effect is surprisingly good. SSD caching solution I used all the more like a HDD instead of SSD, but Apple Fusion Drive experience is almost in the middle of HDD and SSD. Almost all programs installed are first SSD, I feel really like SSD Fusion Drive. When installing the application, copy anything, is generally to go to SSD. Seems to 4GB after it began with the HDD. But with a little effort, you can make the Fusion Drive began after only 1 to 2GB written to the HDD. I created a sequence with Iometer test file, monitoring Fusion Drive when to stop the file is written to the SSD, the process stops, rename file, create a file and start again. The results are as shown below:

You can see, if your speed is fast enough, you may be less than 2GB let HDD take over the write operation. I do not know that this is not the SSD on the amount of space available, but likely is, it really does not make sense because 121GB of SSD without fully. Most of the time, when you do not actively write SSD, Fusion Drive can be maintained at least 4GB of SSD space available. Note: when you first use it, the Fusion Drive the majority are empty, you write almost anything, regardless of size, will directly into the SSD. However, when the capacity to withstand a certain pressure, Apple will change the method: any file up to write 4GB SSD, and the rest is put on the HDD. Install Apple's OS X Developer Tools Xcode itself, I can confirm that. The latter is close to 4GB, but the default situation, it's much to the SSD. The data generated by the application as well. I use Xcode to create Adium, a 682MB project, the entire compilation process occurs in the SSD - mechanical hard disk has been no activity. I'm trying to create a larger project nearly 2GB of Firefox. Then short HDD activity, but the vast majority of activities are on the SSD. I copied a lot of video files (> 10GB) to an iMac, now I have to copy it to a new position, and pay close attention to the movements of the Fusion Drive. The first 2GB is transferred from the SSD to SSD, the next 2GB is read from the HDD, write to the SSD. About 4GB be copied, the source drive and target drive into the HDD. In my opinion, the correct approach should be by default to all files into the HDD, unless they are accessed frequently. Apple's approach seems to be a reasonable compromise, but it is the way of file blocks into the SSD than I thought more positive. I repeated this test with another video files that I have never visited, and get completely different results. The entire file on the HDD. I repeated this test, I visited several times iPhoto library, to my surprise, most of the iPhoto library on the HDD, but also some little read from SSD. But in both cases, the copy of the target drive, of course, are the SSD. I Anandtech folder size exceeds 32GB, containing text, photos, presentations, benchmark results, and I have done almost all of the evaluation. Although this folder is very important, but the majority of it which are not frequently accessed. Copy this folder, I found almost entirely on the HDD. 38GB "My Documents" folder, too, most of this folder is not read. On the other hand, the application is almost always placed on the SSD. Before I often manually operating systems and applications on the SSD, a large media files on the HDD, Fusion Drive to automate this process, and the results were quite good. The only difference between the I manually collate information and automation Fusion Drive is my "My Documents" folder and Anandtech files on the SSD by default. Doing so not only between the performance considerations, but also to reliability, because the hard drive is easier than SSD go wrong. Fusion Drive Performance The Fusion Drive benchmark is a bit difficult, because it is always written to the SSD. If you do not fill Fusion Drive, you write large amounts of data may all be on the SSD. If you do fill it, but the test data set <4GB you measure SSD performance. I came up with a relatively simple use cases, can covers two drives. My Fusion Drive is now filled with 70%, which means that the capacity of SSD is about to reach the peak of (In addition to the the 4GB buffer). I exported as TIFF format photos iPhoto library contains 703 photos. The resulting files are pretty large, 297 photos, 4GB of SSD write buffer is full, all subsequent export photos to the HDD. I'll give this process time, and then contrast it with a HDD partition on the iMac, and also compared with a Samsung PM830 SSD connected via USB 3.0. Results somewhat biased in pure HDD configuration, because of the write operation is substantially the order of:

The figure accurately summed up my experience Fusion Drive: it is almost in the middle of HDD and SSD. In this test, the speed increase is not large, but this is mainly because we use a relatively low queue depth sequential transmission. For random workloads, Fusion Drive HDD gap will widen. Unfortunately, I can not find a good application use cases to generate the 4GB + pseudo random data, so that it can be repetitive high to the benchmark level. If I have been of Fusion Drive very large order of write operations (a file up to 260GB) Finally, it would be silly to swap, no longer migrate data to the SSD, unless you reboot the machine. I suspect that this bug is not triggered by a normal automatic test, but it does provide an interesting situation, and I can use it to carry out the test. Start of pre-installed applications I frequently use the iMac, they are still on the SSD, but some of the later installation of the program is not so. Especially Photoshop CS6, it is part of the SSD, some on the HDD. Fusion Drive for the work load is too large, the SSD can not be dealt with separately pseudo random read performance, this is a good benchmark. I tested Photoshop start-up time on the Fusion Drive with pure HDD partition, as well as via the USB 3.0 connection on PM830 compared. Compare results again reflect my experience:

Relative to the pure the HDD, Fusion Drive has significantly improved, 40% faster start-up time. However, pure SSD is also faster than half. Please note, if Photoshop is one of the most commonly used applications, it will be completely moved to the SSD. About the same performance with pure SSD. The test does not appear in this situation, because my 1.1TB Fusion Drive drive almost full 80%. The Fusion Drive the practical limitations Apple Fusion Drive write SSD is very positive, but your data is more, its algorithm seems to become more conservative. That was not very shocking, but it should be noted that lower total usage of the drive, I need to do almost everything using SSD, but when the application needs more than the Fusion Drive can easily cope with range, this platform for what can be moved to the SSD "become more picky. To remember, 128GB of storage space is enough to store all your most frequently used applications, data and operating systems, the Fusion Drive experience is more like a HDD. In order to simulate and prove it, I move my 200GB + MacBook Pro image to your iMac. Please note that most of this 200GB I frequently used applications and data. Test to the end, I think I need more SSD. Spotlight search takes longer than pure SSD, not all applications are instant start, add photos from Safari to iPhoto needs a long time little ...... Fusion Drive may be good, but it is not magic. If you really need more than 128GB over SSD, Fusion Drive may not be suitable for you. Conclusion Apple Fusion Drive is probably the best I've used SSD / HDD hybrid solution. This is not cutting-edge science, and it does a good SSD (Samsung PM830) a lot of NAND (128GB) and some very positive, intelligent software (Apple Core Storage LVM) combined. The Fusion Drive may not be considered innovative, but it's certainly correct. If you do not have a large number of applications and data, media files is not too much, then for you, Fusion Drive drive should be a reasonable SSD plus HDD configuration, the media files on the HDD, all things are frequently used in SSD on. Although I very much want a larger cache, but I believe that, for most workloads and usage patterns, 128GB enough good. May be required for me personally, Fusion Drive 256GB cache in order to win my heart, but I also understand that I do not necessarily its target audience.

The real question is: whether it is good value for money. Personally, I certainly hope that all SSD, media files on HDD array manually. The Fusion Drive did not do anything to reduce the possibility of "HDD may be earlier than the SSD go wrong", if you use the built-in SSD (Thunderbolt or USB 3.0) HDD RAID array connected, you will master the greater flexibility sex. Unfortunately, Apple does not always provide pure SSD version of the iMac. The Apple iMac limit your choice. For the 21.5-inch model, you can either buy pure HDD version, Fusion Drive version can also be purchased, but there is no pure SSD version. I think you should certainly choose the Fusion Drive version. If you do not intend to buy their own SSD to replace its built-in HDD, Fusion Drive is definitely a right choice. For the 27-inch iMac, Apple provides a pure SSD version, but its capacity is only 768GB, the upgrade price of 1300 U.S. dollars. Suddenly, the $ 250 Fusion Drive upgrade sounds more reasonable. Boldface in the following figure, I recommend the optional program. Please note that if you do not intend to own DIY (if you decide to DIY, then buy the biggest SSD you can find to put those used with external large-capacity memory):

When NAND becomes cheap enough and large enough, iMac completely abandoned HDD it? Or computer will eventually be enough NAND, everything outside in addition to large media files can be stored in it? Year, Apple could double the NAND Fusion Drive, while the cost remains the same. If you see farther in the post-NAND era, memory hierarchy (memory hierarchy) may appear some truly revolutionary things.

The Motorola X Phone price exposure biography went on sale on July 8

Motorola X Phone is still quite mysterious, but there are still a lot of rumors after another exposure. A few days ago, the news from foreign websites Android authority disclosure said Motorola X Phone will be released in May this year, Google I / O conference, then officially on sale July 8 As for the phone's price Nexus 4 models . July 8 listing , According to the latest disclosure Android authority Motorola X Phone will be officially released in May this year, Google I / O conference, then scheduled for July 8 officially started selling. At the same time the Motorola X Phone not only will be the first equipped with Android 5.0 Key Lime Pie systems, but also will not join Motorola's own interface, will show his native Android system like Google Nexus phone. As for the price of the phone, the Motorola X Phone will be Verizon contract launch, which sells for $ 299 (about 1860 yuan). Also, the machine will also be in the Google Play store shelves, rumors bare metal price is about the same as the previous Google Nexus phone. Provide unlocking services In addition, operators Verizon will contract Edition Motorola X Phone the unlock bootloader services, the user can choose a monthly package of $ 15 to unlock program operators. If you feel that this is too much trouble, you can go directly to the Google Play store to buy already unlocked version. The Motorola X Phone also get more carriers customization opportunities, although their price is still no definite news, but the expected pricing with Verizon should not have much difference. The first Android 5.0 system models As Motorola X Phone's main features, the aircraft will be equipped with the latest version of Android 5.0 system, will not only bring a smoother experience, and will Chrome is set as the default browser, as well as add new file manager and other functions. Also rumors of the new system by the the contact multiple choice, the new lock screen page will also be some changes. Order to solve the problem of battery life hardware upgrades, Android5.0 system will be added to the new power management system, and will also bring better security features. 5-inch touch screen The Motorola X Phone also similar the DROID RAZR M borderless design, and is equipped with a 5.0-inch touch screen, supported the resolution is expected to reach FHD Full HD level. As for the other features are rumors that they will have 2GB RAM memory and to load quad-core processor, built-in 13-megapixel camera. Away May release date as well as the day, I believe that the features and functions of the Motorola this X Phone configuration information should be will continue to be exposed, to taste the fresh taste of Lime Pie friends may wish to continue to pay attention to our future more reported.

iPad 5 is a larger version of iPad mini

Today, news that an Apple OEM manufacturers Foxconn Technology Group's internal upgrade replacement products on the fourth generation of the iPad iPad 5 appearance has been finalized to learn more iPad mini design appearance. It will narrow frame design, and the corner is chamfered edge design.

Broke through the the Foxconn production department informed people, the internal code name of the fifth-generation iPad sapoxx, current shape has been determined. iPad 5 looks more like a larger version of the iPad mini iPad 5 frame design similar to the iPad mini, but still be able to ignore the user holding machine no intention of touching the screen.

Coincidence KGI Securities Securities analyst Kuo Ming-Chi also claimed that the next generation the iPad will learn the design of the 7.9-inch iPad mini, but weight than the third and fourth generation of iPad drastically reducing thickness than the third and fourth generationiPad thinning. In the last year, Kuo Ming-Chi had to accurately predict Apple will be released before the end of 2012 a new iPad.

iphone 5s ultimate exposure

According to the famous KGI Securities analyst Ming-Chi Kuo predicted, in 2013, Apple product updates will be brisk, including improved models of the two the iPhone - iPhone5S existing iPhone 5, iPad mini with Retina display screen, as well as hardware upgrades MacBook laptop and AppleTV.

Of course, we are most concerned about, or is it two iPhone, alleged iPhone 5S appear also accompanied by a low-cost version of the iPhone 5 look similar to the basic and 5, but thicker design and plastic housing to reduce costs; and like I said earlier, there will be in addition to black and white outside with multi-color to choose from.

Analyst Ming-Chi Kuo The forecast given in the report, which even includes the configuration of the iPhone 5S, remains in the 4-inch screen, the new 28nm process A7 processor upgrade the maximum aperture of the camera to f2.0, batteryincreased up to 1600 mAh, thickness and weight remain unchanged.

Apple is losing its brand value?

To provide users with a superior user experience is the basis of the Apple brand value. But recently not only a user comment Apple (Development site information) Map on Apple's commitment to draw a knife. Coupled with the recent drop in share prices, and analysts are not optimistic, we can not help but suspect that Apple's brand value is not disappearing? Apple's online satisfaction has declined. ForeSee site to four conditions to judge online store user satisfaction: competitive prices, the appeal of commodities, website content and website features. Apple 2012 users online satisfaction score only 80 points, the lowest score for four consecutive years. In contrast, Amazon's score of 88 points. The reasons for the decline of the online satisfaction is very simple, and other online stores, Apple stores are not enough varieties of goods. A survey shows that a variety of influential than price influence. The major sales of Apple Mac, iPad, iPhone, and iPod, but Amazon sold everything. But if money earnings, Apple is still the boss of the retail stores. There was a report, Apple earnings even second Tiffany twice every inch of land in all retail stores in November. The competitors have noticed, and is to mimic Apple's retail experience. Microsoft's new store is very nice, clean, simple, looks like Steve Jobs personally designed. And the biggest difference between Apple retail stores, on the walls of the Microsoft retail stores have many colorful magnetic stickers as the embellishment, looks quite attractive. But its allure is not as good as the Apple Store. Found a couple of days ago I visited the Microsoft store in Palo Alto, Microsoft Store is more than twice as large as the Apple Store, but not day visitors. In contrast, the Apple store is very busy last week a total of 19,000 visitors. IPhone loyalty decline. After investigation, the policy analyst firm found that only 88% of iPhone users say they will buy another iPhone, and last year the figure was 93%, and this is the first time. There are two explanations for user loyalty decline, iPhone charm is no longer, and the second is the iOS 6 map. IPhone user loyalty is still overriding competitors. Studies have found that Samsung (Development site information) are working to enhance customer loyalty, but now only 82%. In addition, Barron voting in August, only 48% of Android users plan to buy an Android phone, and 2% of BlackBerry users continue to buy BlackBerry. Other products also finally able to compete and Apple products. The growing gap between Apple and competitors. Samsung, Google, Nokia smartphone can usually give the left a very deep impression. , Amazon, Sony and Barnes & Noble have launched the Tablet PC, although not from the large waves, but still be able to take away a small portion of the market belongs to Apple. The high cost of conversion to other platforms from Apple. Very large user base of Apple products, more than half of U.S. households own more than one Apple device, the average over the three Apple devices. Synchronization between the device are via OTA or iCloud, in October last year, iCloud users had reached 190 million people. If you want to convince the user to connect a few non-Apple devices is a challenge, but learning another familiar to a new platform is not small cost. Investors underestimate the value of brilliance. Apple has a very strong brand, user satisfaction and loyalty little bit lower, but also enjoys a great advantage compared to competitors. Think about the company in the field of consumer electronics popularity of the three most popular products, and continues to occupy the field of consumer electronics products at the fastest speed, and set up a retail store standards, with the number of 435 million consumers, in addition to The company will also introduce more new products in 2013. A blog, Apple is often used to compare and Cisco, and Microsoft. Bowen pointed out that the technology bubble burst in 2000. YCharts data show that Cisco then the historical price-earnings ratio of 200, Microsoft is 64, but today Apple 11. Cisco and Microsoft's stock price is high because of the high earnings multiples, Apple's stock price is high because of the profitable and healthy and stable, there is limit to the number of shares. However, Apple's stock price is not "expensive", this is the reason why competitors can not compare. Overall, Apple's brand value is still strong. Yes, it is the presence of competition, and competitors can launch devices to challenge Apple products. But compared to competitors, Apple have a higher level of user loyalty, and will continue to attract more buyers to enter the Apple Store. If Apple's decline will be very high, the user cost of conversion platform, users also continue to stay in the Apple ecosystem, this high price so Apple leeway for fix errors (such as Apple Map).

IPhone 5 quality problems.

Apple iPhone 5 is on sale for the first three days, sales exceeded five million, compared to the same period last year launched the iPhone 4S in excess of one million record sales again. But the quality problems are frequent, the recent weakness of the iPhone 5 is alleged to have light leakage, wear and other quality problems. Securities Times Online News (http://kuaixun.stcn.com/kuaixun.shtml) the inventory related news. A keyboard static

Keyboard static Some users reflect on MacForums as well as Apple's Discussion Forums in forums such as their iPhone 5 in the App Store or iTunes store enter the password, the keyboard will appear on the electrostatic interference. User analysis, resulting in static reasons may change the appearance and layout of the App Store and iTunes store Apple iOS 6 is a software problem has nothing to do with the iPhone5 hardware quality.

Apple iPhone 5 to open after-sales, global berserk on sale just a few days, but quality problems one after another emerged, the latest exposure is the screen machine top light leakage and signs of wear. City Daily News, Mac Rumors forum users to buy iPhone 5 complaints, refers to the new machine's glass display screen and aluminum antenna, minor light leakage, online spread sheets iPhone 5 light leakage from different machine photo . U.S. tech blog BGR subsequently tested to confirm some of the new iPhone 5 antenna bit is true that there are slight light leakage, is believed to be the key to open some of the new machines, there are hairline cracks cause the device to light leakage, there is not yet know is an isolated incident or a common quality problems. BGR editor, in the case of the lower iPhone 5 screen brightness, light leakage is not so obvious. Mac Rumors forums, many users have reported the same problem, the U.S. Apple store has to provide a replacement service for some users, but a netizen said, replace the phone, the new machine also experienced the same problem. In addition, some of the new iPhone 5 body signs of wear, including the machine side of the joints in the surface of the screen from scratches, has so far received more than 350 complaints. Although the quality of wave after wave, but if fans still side downtown side grab, the enthusiasm of the new machine did not shake the iPhone 5 is on sale for the first three days, sales exceeded five million, compared with the same period last year launched the iPhone 4S is out one million record sales again. But by product demand and other factors, sales of the iPhone 5 is still lower than analysts expected 6000000-10000000.

IPhone5 trap "wear door" According to media reports, iphone5 global open on September 21 sale, on sale for three days sold more than five million. But iphone5 unfortunately mired wear door ", part of the" fruit powder "was eagerly anticipating the open iphone5 the packaging, scratches, paint chips traces of the bump. The Iphone5 using anodized aluminum technology enables mobile phone and lighter than the previous generation, but also easier to wear. iphone5 "wear door" so many "fruit powder" Internet complaints similar complaints has exceeded 350 since.

Map loopholes Fourth, Map loopholes Apple map including identification cities errors, incorrect icon can not be displayed certain locations. For example, Apple Map of New York's Brooklyn Bridge in Manhattan side is a normal display, but to the other side he was twisted into a braided; sometimes good section of the road, suddenly becomes a cliff; originally tall Eiffel Tower, the Apple Maps 3D scene, has turned into a small tower. Some schools do not have to be included on the map, a furniture museum in the river. Apple quickly responded that the company is working to solve the problems iOS6 map service. 5, iPhone 5 and then exposed to WiFi malfunction: or router settings related U.S. technology news site CNET reported that recently there have been the user reflects iPhone 5 exists WiFi connection, although the reason for this problem is still unclear, but the Apple support community forum posts repeatedly referred to the WiFi router's security settings. According to the Science and Technology reported that a network user name C4RLOCO Apple Support Community Forum, said: "I'm so after the failure of the router on WPA2 Personal WiFi security settings, the iPhone 5 began normal browsing the web." Focus on Apple products reported Website MacRumors In an article entitled "iPhone 5 WiFi connection slow makes you go crazy," the post, and it has initiated discussions. Based on a large number of the comments of the users of this post, the iPhone 5 WiFi problem seems to be different from the iOS 6 WiFi problem. Users Mjlivesimmortal MacRumors forum message said: "For me personally, I did not find it is iOS 6, but the problem of iPhone 5 my iPhone 4S WiFi network without any problems, and I have to upgrade to iOS6. " A netizen commented that in the MacRumors forum: iPhone 5 WiFi network is very slow, and often dropped, and almost impossible to use. IPhone 4 there have been no such problems and I are using WPA2 no intention of converting to WEP. Apples even Such features are not tested? " Despite Apple support most of the comments in the community and MacRumors forums are talking about the problems mentioned above, but there are some posts that their iPhone 5 does not appear to WiFi. , Pressing his hand with bubbles Some users said that when they press hard on the screen of the iPhone 5, you see some strange bubble effect appears on the display. Another reported that some users also said that the iPhone 5 is part of the display area flicker or blur spots. Uncertain cases generally. 7, Lightning interface issues Multiple users attempt to set aside the USB connector encountered a problem, some users have had to draw a pair of pliers, and even the whole machine is brought to the Apple retail store to store employees to pull out the connector. The Apple site support forum user Nclose Apple this new USB connector at the bottom of the groove deeper than the old joints, which may lead to the reason of the foregoing problems. Apple has not yet been reached for comment. Lightning is Apple's latest new technology to replace the previously used 30-pin interface, its main benefit is smaller iPone 5 interface, 80% smaller than the previous interface.

iPhone5 quality problems are frequent

the iPhone5 rear cover scratches serious since the iPhone 5 Offering many Internet users since Apple sincerity issued questioned the voice. Before the official Apple did not give substantive solutions solve these problems, it is best to iPhone5 plus protective cover so as not to wear too ugly Issued by the sincerity of Apple since the iPhone 5 on sale, many Internet users questioned the voice. "Map gate" controversy last week has just ended, iPhone 5 users to usher in the "wear door. Many users have found that the side edge of the iPhone 5 is prone to scratches and paint, especially the black version. The black version of the iPhone 5 generally serious Diaoqi white version of the iPhone 5 multiple users to reflect light leakage in the phone glass front panel and the edge of the fuselage between the aluminum antenna, yellow screen door, screen bubbles doors also Immediately Diaoqi doors and light leakage gate followed. According to foreign media reports, some users said that the iPhone 5 yellow screen phenomenon, when press hard on the screen, the screen will appear the bubble effect. Some users claimed that a certain area of the screen to flicker or blur phenomenon. iPhone5 virtual keyboard flashes In addition to the succession the exposure of touch screen light leakage, as well as body paint, intolerance zoned defects, the aircraft before it was rumored that the problem of static interference when using the virtual keyboard. According to the reports of foreign sites, some Apple iPhone5 users post, said at the forum, they buy a new Apple iPhone 5 App Store or iTunes store enter your password on the touch screen virtual keyboard will appear static phenomenon. As for the specific situation in the virtual keyboard a series of horizontal lines, and the brightness of the flashing are not the same, and there are some intervals of the highlights. The above problems although it is not clear whether a large area, but the iPhone5 recently frequent "Diaoqi the door," Leaky doors "," Map the door "or that part of the fruit powder concerns raised. Appear on top of the video site YouTube, the video quality of storm drain, it is sufficient to show iPhone 5 screen appears above. So many problems for the iPhone 5, according to U.S. technology blog 9to5Mac disclosure in a e-mail reply to questions a user, Apple's senior vice president of marketing Phil Schiller (Phil Schiller) said, "any aluminum products are may appear scratches or paint chips in use, thus showing the natural color of the metal, this is a normal phenomenon. said, adding that Apple will not provide free replacement service for this problem, because this is a normal phenomenon. For this reply, Tucao while the majority of Internet users also can not help but Apple sincerity even the next issue questioned the voice. However, before the official Apple did not give substantive solutions solve these problems, it is best to give iPhone5 plus protective sleeve to prevent wear too ugly.

Snoring causes of death

Inlife we will encounter such a situation : a long healthy friends die, inexplicably in sleep; a dinner with us family, never wake up in the morning. Medical home on more than 400 death patients were found, most of the dead had years of snoring history. This shows that snoring is one of the culprits night sudden death.Snoring is very dangerous, the child snoring easily lead to short stature, weight, lack of concentration in class, memory loss, reduction of intelligence, learning achievement is not good.Women snore easily lead to sallow complexion, rough skin, fat, bad breath, mouth pain, irregular menstruation. Serious or even ahead of 3-15 years of menopause.Male snore easily lead to sexual function decline, and even impotence; losing energy during the day, confused and disoriented, affecting the development of future work.Blood pressure in elderly snoring sleep increased significantly, and even sudden death.Research confirms, 1/3 hypertension, heart disease caused by 1/5 snoring, other complications and cerebral vascular diseases, diabetes, kidney disease, epilepsy and other 20 kinds of.

Men must learn the art of love

First, make the best use of a tongue: Talk about not only sex, but has a deeper meaning: to talk. Sex of course is the "gift" of women, but is willing to talk about your sex life is more important than this. From time to time to break the diaphragm, ask her true feelings from her point of view to understand her joy causes, you will benefit greatly. And do not forget the sound of joy issued intercourse, do not be shy, she needs to know and feel that you are truly happy. Second, give her a kiss: A wonderful kiss is the highest level of communication. Forget to specify the actions of the mechanical pressing her lips, tongue slid into a deep sip a truly made her memorable kiss, then gossip handover to the "feel". Pay attention to her gently gasp; she ventilation, soulful eyes you grab caught her pair of juicy eye, let her know how you cherish her. Third, look for new areas: Let her know that you are a big adventurer! Do not be traditional rules limit your fun prohibit new attempt, a new search a lot of people, not because that would cause physical pain, but the psychological obstacles. One of the best to provoke both sides lust, is to watch each other masturbating each other; This is not is not insulting, but to make both sides a better understanding of the partner's most sensitive areas, to improve the sexual intercourse. Fourth, slowly: Generally three or four movies, it is an illusion: Sex is always faster and strong. But when the face of the lover, slowly feel the rhythm of each other, look at it further more important tips. Could still to enjoy foreplay bring tactile enjoyment you why so hasty? Occasionally in the day-to-day program to insert some steps to extend the exploration time can be both fun more lasting.

13 ways the most exciting sex

The first one: while washing-doing Most of the people in this scene is not unfamiliar. Some big bathtub sexual experiences, while others are in the shower room. The toilet should be in addition to the bedroom the second personalized love multiple places, If you're up to now have not tried, it would act now, otherwise too out! The second measure: Fantasy add passion When you love having sex with you Shique remembered someone else's name, you will be very angry, I feel very disappointed. But we have to teach you both intentionally at least one side to the other people imagine their dreams or most like to have sex. General lovers are likely to fantasy sexual partner is her favorite star, you can also blindfolded, imagine you she was a sex goddess. In fact, no harm in this kind of imagination, and can even inspire your sexual passion, sublimate your sexual feelings. The third measure: outdoor camping Wild Sex Do not think that really humble you that guy is the love of nature especially love camping ALICE, although the survey shows that more than 40% of the camping enthusiasts have had had sexual relations with the camp ALICE camping. Want what? Quickly correct you about your thoughts, rushed equipped with high-end camping equipment to bring with her to go camping. Fourth trick: to create a feeling of "betrayal" Abetting you do not want to deteriorate, but you have to admit, betrayal and sexual pleasure far more than the public lovers brought. This is necessary to explain a lot of people having an affair is not intentional! Course, you can not really go affair it? But tonight, you want to enjoy the sense of "betrayal" stimulus, how to do? In fact, you can bring her to go with your best friend home or the home of a friend, in a strange room once secretly sex. The tension of the kind of fear of Moments of Discovery will make you appreciate the endless irritation. I remember done to help people clean up! Fifth move: sweet car shock I believe that everyone is familiar with this way, with the increase of private cars, many private car owners who enjoy sex in the car commonplace. Maybe a few years, between good buddy popular questioning: "Dude, you car shock yet?" Car shock skills not specifically mention the most important thing is to have a spacious cabin window glass have to have a strong concealment. In addition, not everyone left to rot wild forest are suitable for parking, so please pay attention to the car before the earthquake to look at the surrounding environment, not to violate the rules of the road, attracting traffic police or management personnel would be too embarrassing!! Sixth move: pet foot fetish Here to introduce the fact, is also part of foreplay love acts. Course richer lifestyle foot fetish foot fetish groups. Here did not introduce one. We only circle with foot fetish sex related. "Love" her foot? You might hit a few question marks. Question mark: that is what it feels like? Question mark: her feet What is that smell? Question mark: so health this? Question mark: I lick her feet, this feeling all right? We can use this order to answer you: Answer: You may be very interested in her for you, so you must advance will this wash wash clean. Is not it? Answer: She may know much about what you taste. Her taste, you should be aware of. Answer 1: You try to find the answers, and each person's feelings are different. Answer: you love it? This is very important. The trick 7: Wild SM SM sweet it? Many people still afraid to try it because of their misunderstanding of the SM itself. The basis of the SM is in not hurt the premise of the personal. Online now there are a lot of shops selling SM tools, these tools are both fun and not harmful, the price is not expensive. Usually spend a lot of money, why not spend a little money in it? Up is to tell each other: we tried a less suitable in other respects. Of course, is more likely is that each of you on this have found a new sky Oh! Eighth trick: mirror before pleasure Set up a place where you make love can shine on your mirror. In the mirror, you can always watch the two lingering nude action, which helps you in the process of sex burning passion! Mirror must be fixed, not by your actions affect, or broken in upon you worse it! Ninth trick: let others "peeping" The deliberate creation so that others can come peeping your actions might. Such as leaving lights on sex, semi-Kai doors and windows, draw the curtains, and so on. Probably did no one notice you doing, but this deliberate arrangement, will let you in the process of sex tense than usual safe and reliable sex more exciting this way. The tenth trick: Shisexingye

Dating girls

White girl ( in British Holland, Germany, the United States and their descendants girls )First date: you will and her good night kissSecond date: there will be further physical contactThird date: may go to bed, but in the most general wayThe Irish girlFirst date: you and she got drunk and went to bedSecond date: you again and she got drunk and went to bed20 wedding anniversary: you still and she got drunk and went to bedItaly girlsFirst date: you take her to see a show, then go to a very expensive restaurantSecond date: you meet with her parents, her mother gave you do Italy and Italian meatballThird date: you have sex with her, she wanted to marry you, and stick to the 3 carat diamond ring.5 wedding anniversary: you had 5 children, and hates to sleep with her6 years of marriage, you think you have a mistressThe Jewish girlFirst date: you have a headache healing crackSecond date: you have to dieThird date: you are no longer a headache, because you promised to marry herChinese girlsFirst date: you took her to a very expensive restaurant, nothing happened.Second date: you took her to a more expensive restaurants, still nothing happened.Third date: no third date, because you're aware, always nothing will happen.Ps: and Chinese students date, the first meal of the day, nothing happened, the very next day to go to the bar, what has happened, the third day to abortionIndia girlsFirst date: see her parents.Second date: the date agreed to marryThird date: marriedBlack girlFirst date: you should take her to eat very expensive dinnerSecond date: you need to take her and her friends to eat very expensive dinnerThird date: you have to pay for her rent.Tenth date: she's pregnant, the child is not youMexico girlsFirst date: you should take her to eat luxurious dinner, drinking too much tequila drunk, and then in the back seat of the carSecond date: she's pregnant.Third date: she moved into your house. After a week, her father, mother, sister, brother, brother, their children, her grandparents, her father 's mother, her sisters, cousins, her sister 's boyfriend, and their three children moved to you. Can eat rice and lentils just every day. Your home like a Mexico slumPakistan girlsFirst date: date by her family. Her parents, brothers, sisters, cousins, cousin, cousin, cousin, uncle and aunt, uncle, aunt, all his friends and neighbors.Second date: you get a headshotNo third date. . ©2013 Baidu 使用百度前必读|百度翻译API|翻译协议|建议与反馈|帮助

Chavez may have died

Local time on January 5, Caracas, Venezuela, the people gathered in the capital's Square to pray for President Hugo Chavez. It is reported that since June 2011, Chavez once suffering from pelvic tumors to Cuba therapy, his successful re-election in the October 2012 presidential election, but the body also found that cancer cells, and again on December 11 in Havana to undergo surgery. BEIJING, Jan. 9 reported that the Venezuelan government confirmed President Hugo Chavez illness can not participate in the inaugural ceremony scheduled to be held on the 10th, will be sworn in the next day selection. Vice President Maduro pointed out in a written statement the the Chavez team doctor think his postoperative recovery time will continue until January 10, and therefore unable to attend the swearing-in ceremony of the 10th. Chavez request Congress to postpone the swearing-in ceremony according to the provisions of Article 231 of the Constitution of the precipitating cause ". Receiving treatment in Cuba, Venezuelan President Hugo Chavez, has been confirmed severe lung infection caused by breathing difficulties, their condition once again increase the domestic political situation in Venezuela is full of uncertainty. Chavez won the presidential elections in October 2012 and re-elected again. According to the provisions of Chapter 231 of the Venezuelan Constitution, the President-elect shall be sworn in on January 10 to the National Assembly, but if the president can not be sworn to the National Assembly, also sworn to the Supreme Court. The Constitution does not provide for a time limit oath to the Supreme Court.