Cloud host will shuffle China IDC market

Hard disk I/O: Cloud Host performance evaluation of the "Sky Wing Cloud" chapter

Absrtact: Cloud host as the most typical of this model and the largest market demand, the market attention has soared, rapidly become the most popular in the field of IDC vocabulary.

With the rapid development of cloud computing concept and technology, the application of AWS Amazon Cloud host model in China's IDC market has rapidly warmed up. Cloud host as the most typical of the model and the largest market demand for the application, the market attention has soared, rapidly become the most popular in the IDC field vocabulary. More analysis that the cloud host will reshuffle China's IDC market, it brings not only the technology and products on an upgrade, but also a summit of traditional host application and service mode of the big change. After 2011, with the joint promotion of various links in the industrial chain, the growth trend of China cloud host market is strong. To Aliyun, Sky Wing Cloud, Sheng as the representative of the first-line cloud host supplier rapid rise, related technologies, products, services continue to improve. With High-performance, low-cost, rapid deployment, on-demand delivery, flexible expansion, security, controllable, easy management, and many other advantages, cloud host has become a new generation of host rental services representative and trend, is rapidly replacing the traditional VPS and independent mainframe, become the mainstream market.

With the continued prosperity and development of the market, more and more traditional space, host service providers began to transform, have launched a cloud host products. However, due to the lack of unified, authoritative, rigorous industry standards, the suppliers of products, technology and service levels are uneven, high, medium and low different levels of suppliers. It is very difficult for users to discriminate and choose high-quality Cloud Hosts. Coupled with the domestic well-known search engine "no integrity", and then the poor supplier, as long as the money spent in place, but also with the front-line, mainstream cloud host suppliers, in the "cloud host" search results in parallel. In addition, the major network media, Webmaster forum in the overwhelming advertising, hydrology is dazzling! To be in many choices, find suitable for their own needs, and have a better cost-effective products and suppliers is not easy, not "strong" people can not and also! However, seemingly complex, in fact, just grasp the point, even if the "rookie", A little study can make the right choice.

Let's talk about suppliers.

Cloud host emphasis is the scale effect, product formation, improve the need for a long period of deployment, only funds, technology are strong enterprises can create a top product. In the selection of suppliers, must choose a large brand, technology, and have a certain accumulation of suppliers. After several years of development, China's cloud host market pattern has begun to clue. Aliyun after the acquisition of million nets, with a strong brand and user accumulation quickly, regardless of user awareness or shipments are at the forefront. Sky-wing Cloud relies on China Telecom strong brand influence and technical support team, in the market expansion, product development, customer service experience and so on the progress of astonishing speed, great catch up with the trend. Sheng through mergers and acquisitions phpcms netting a group of AdSense, and then rely on the advantage of the first advantages of the horse rodeo, also reaped quite abundant. Huawei Cloud, Microsoft Cloud Although already has the layout, the strength can not be said, but is still in preparation stage, it will take time to make a point. Domestic various local computer room, domain name business, foreign host business whether in the scale, brand, or technical is difficult with Aliyun, Sky Wing Cloud, Sheng such a national front-line suppliers, plus some special restrictions (you know), what choice to believe that the reader is self-evident!

Tell me about the product.

Cloud host core parameters are nothing more than eight: CPU performance, memory performance, bandwidth capacity, access latency, maximum concurrency, hard disk capacity, throughput, and I/O. Current CPU's mainstream configuration is: 1 cores, 2 cores, 4 cores. Due to the relative fixed CPU suppliers, the same number of cores and the main frequency, the CPU performance of different vendors generally little difference; memory mainstream configuration is: 1g,2g,4g,8g. Memory is one of the most important factors that affect server performance, but memory performance is largely influenced by the CPU, and in some cases the increase in memory does not necessarily result in an expected effect. At present, the main cloud host adopts the third generation memory, and the performance of both read and write speed and stability is greatly improved compared with the second generation memory. When users choose Cloud Host, they can estimate the required memory size according to the average daily traffic, maximum concurrency and other parameters, and the main bandwidth configuration is: 2m,5m,10m. Bandwidth performance and access latency, not only related to the port capacity provided, but also related to the selected lines, once the interoperability between telecommunications and Unicom has been unsatisfactory, but with the operator's basic network upgrade and related policy adjustments, the current problem is greatly improved, or even partially ignored.

Hard disk I/O is the biggest bottleneck of cloud host performance. The I/O performance of the Aliyun, which is highly praised for its comprehensiveness, has been criticized. I/O will not only affect the response speed of the server in high concurrency, but also have a great impact on the performance of the Exchange database. As we all know, one of the most important aspects of optimizing database performance is tuning I/O performance, and MySQL and SQL Server are no exception. For non-I/O-intensive servers (such as static file servers only for host small CSS, JS, and so on), I/O degradation has little impact. But for I/O-intensive servers (such as picture stations) and the database server, I/O degradation has a significant impact, I/O as the Cloud Host a core index directly determines the hard disk data read and write speed. I/O bad reflected to the site is the site page load slow, card, read the database slow, and even caused the page to open timeout. For example, the use of phpcms (similar to other CMS) friends will be very sympathetic, background image upload sometimes I/O error, resulting in the image can not upload the phenomenon, this is because the server's I/O read and write ability of the problem caused by low.

After the author test, the sky-wing cloud hard disk I/O performance far ahead of other host operators. Hard drive throughput, access latency, and Apache all show excellent performance. All the I/O test tools are flo. The test tool used for throughput is the DD command under Linux, and the tool used for the concurrency test is apachebench.

Flo is a very flexible I/O test tool that can simulate various I/O operations through multithreading or process, has rich parameters and can be tested by invoking a wide variety of read and write functions. This test is mainly through Flo to the disk of random read, random write Test.

DD is a Linux/unix command that uses a block of a specified size to copy a file and to make a specified conversion at the same time as a copy. It is used to read and write a 10GB file and test the reading and writing speed of the storage system.

Apachebench is a tool that comes with Apache, dedicated to the benchmark testing of HTTP Server, that can simulate multiple concurrent requests at the same time. The main purpose of this test is to evaluate the performance of some mainstream applications on cloud hosts. This test process for the Apache service's default home page for concurrent stress testing, simulation of 10w requests, 100 concurrent test.

The test results are as follows:

Flo Test screenshot is as follows:

I/O

Sky Wing Cloud host--cpu:1 kernel Memory: 2G system disk random write test chart

Sky Wing Cloud host--cpu:1 kernel Memory: 2G system disk Random Read test chart

Sky Wing Cloud host--cpu:1 kernel memory: 2G data Disk random write test chart

Sky Wing Cloud host--cpu:1 kernel memory: 2G data Disk random Read test chart

Sky-wing Cloud host--cpu:2core Memory: 4G data disk random write test diagram

Sky Wing Cloud host--cpu:2 kernel memory: 4G data Disk random Read test chart

Sky Wing Cloud host--cpu:2 kernel Memory: 4G system disk random write test chart

Sky Wing Cloud host--cpu:2 kernel Memory: 4G system disk Random Read test chart

Throughput：

Sky Wing Cloud host--cpu:1 kernel memory: 2G data Disk write throughput test diagram

Sky Wing Cloud host--cpu:1 kernel memory: 2G data disk read throughput test diagram

Sky Wing Cloud host--cpu:1 kernel Memory: 2G system disk write throughput test diagram

Sky Wing Cloud host--cpu:1 kernel Memory: 2G system disk read throughput test diagram

Sky Wing Cloud host--cpu:2 kernel memory: 4G data Disk write throughput test diagram

Sky Wing Cloud host--cpu:2 kernel memory: 4G data disk read throughput test diagram

Sky Wing Cloud host--cpu:2 kernel Memory: 4G system disk write throughput test diagram

Sky Wing Cloud host--cpu:2 kernel Memory: 4G system disk read throughput test diagram

Maximum Concurrency:

Sky Wing Cloud host--cpu:1 kernel memory: 2G Apache concurrency test

Sky Wing Cloud host--cpu:2 kernel memory: 4G Apache concurrent test diagram

Summary：

With the rapid development of cloud computing industry, cloud host has become the representative and trend of the new generation of host leasing services. Facing the complex cloud host supplier, the user chooses, the Aliyun, the sky Wing cloud such big brand, the technical strength strong mainstream supplier should be the first choice. Because hard disk I/O is the biggest bottleneck of cloud host performance, in the selection of specific products, to fully consider their actual needs, for I/O-intensive server, Sky Wing Cloud host is a good choice.