xeon 3ghz

, only the standard server-type ECC RDIMM, capacity 4GB, 8GB, 16GB, rated frequency is also 2133MHz, voltage 1.2, product number AD4R2133W4G15, AD4R2133Y8G15, Ad4r2133y16g15. However, Wei just said that the DDR4 version of ECC So-dimm, VLP RDIMM, LRDIMM and other types are also being developed, will soon be introduced. These memory are used by servers and workstations, and Wei Gang said they have been working closely with Intel, and its DDR4 memory fully supports the next-generation serve

learning. Intel Xeon e5-2680 V3 (Haswell) processor 2.5GHZ Frequency I/O optimization instance small Web application, small to medium number Database Large multiplayer online gaming (MMO) front-end, data analysis and computing; Medium Large Web server (high concurrency) use CPU for high-precision codec, rendering, Gene computing Universal N2

Linpack Baidu Encyclopedia: http://baike.baidu.com/view/485828.htm Cluster theory floating-point peak =cpu frequency (GHz) x4 (CPU per clock cycle performs floating-point operations) x node number x8 (dual quad core per node)For example, the CPU of single node machine is Xeon E5430, then its theoretical peak =1.66x4x1x8=53.12 Gflops Another simple metric that is often used to evaluate computer performance is peak speed. The peak speed of a computer u

. Disadvantages:-system administrators have a greater amount of work-because the service is based on its own architecture, the system administrator needs to be more concerned about the architecture.-Maintain backward compatibility-there are countless changes to the API approach during one year of maintenance. The problem is that these changes must not compromise backwards compatibility, or the code for each front-end site needs to be modified, and the programmer will work when all the sites are

appears in all the messages disjointly at least twice. Since you is not overfond of the cryptographer, try and make this fragment as long as possible.InputThe first line of input contains a single positive integer tOutputFor each test case output, the length of longest string which appears disjointly at least twice in all of the messages.ExampleInput:14abbabbadabddkabababacabababaOutput:2(in the example above, the longest substring which fulfills the requirements is ' BA ') Adde

being imposed on industry, and industry is not prepared beforehand. The real reason for Intel and AMD to adopt the technology is not that the duo is a sudden emergence of an excellent idea. In fact, the chip manufacturers could have been very content to continue to launch faster and faster single core processors. However, this approach is not feasible, because with the clock speed of more than 3GHz, the single core processor began to consume too mu

1, the graphics card, before looking at all the configuration, must be the first and foremost is the graphics card. Now regardless of the game or other programs, for the quality of the picture requirements more and more high, if there is no high-quality graphics card, want to play those large games, it is impossible, so the graphics configuration is very important. The capacity of the video card is not a problem, about 1G is enough. But we want to look at the quality of the 128bit DDR5, in the l

send interrupts, advantages: fast speed, low cost;RDTSC directiveThe RDTSC instruction is the X86 platform's read timestamp register TSC (64-bit) instruction, and the TSC register counts the elapsed time since the CPU started, and the TSC increments by 1 when each clock signal arrives.The current CPU frequency >1ghz, so the clock cycle is the nanosecond level.64-bit Register overflow time calculation: If the CPU frequency is 3ghz,1s within the TSC in

unit.PcProgramming Languages:Sequential executionLoop executionSelect ExecuteCPU run at a higher speed than memoryIn order to neutralize the difference between the CPU and memory, the buffer is neutralized.In the field of acceleration, we use caching to solve, cache as King , which is a very important solution in the field of computer acceleration.Any two levels between, in the speed, or in logic, as long as not convergence, add the middle layer.(for example, the CPU is fast, memory is slow, an

often composed of a series of tasks that can be executed concurrently. However, it is important to note that the use of a large number of threads will result in excessive context switching, which ultimately affects performance.Again, a few years ago, we noticed that Moore's law, which predicts a doubling of processor speed every 18 months, is no longer true. The processor's frequency is stuck up and down 3ghz~4ghz. This is due to physical limitations

It's also taking 10 data. SELECT * FROM Yanxue8_visit limit 10000,10 And SELECT * FROM Yanxue8_visit limit 0,10 is not a quantitative level. There are also a lot of five optimization guidelines on limit, which are translated from MySQL manual, although correct but not practical. Today I found an article to write about limit optimization, very good. Original address: http://www.zhenhua.org/article.asp?id=200 Instead of using limit directly, we first get the ID of offset and then use limit size

The optimization of MySQL is very important. The other most common and most need to optimize is limit. The limit of MySQL brings great convenience to paging, but when the amount of data is large, the performance of limit is reduced dramatically. It's also taking 10 data. SELECT * from Yanxue8_visit limit 10000,10 and SELECT * FROM Yanxue8_visit limit 0,10 is not a quantitative level. There are also a lot of five optimization guidelines on limit, which are translated from MySQL m

Windows Server2008 Related addresses Windows Server 2008 Virtual Technology - -a little attention. points Microsoft Windows Server2008 used to provide the organization with the most efficient platform for virtualizing workloads, supporting applications, and protecting networks. It provides a secure, manageable platform for developing and reliably hosting WEB applications and services. From workgroups to data centers,Windows Server2008 provides exciting and valuable new featu

performance of limit drops dramatically. Source: A three-acre blog The optimization of MySQL is very important. The other most common and most need to optimize is limit. The limit of MySQL brings great convenience to paging, but when the amount of data is large, the performance of limit is reduced dramatically. It's also taking 10 data. Copy Code code as follows: SELECT * FROM Yanxue8_visit limit 10000,10 SELECT * FROM Yanxue8_visit limit 0,10 is not a quantitativ

-level equipment, function, complexity is not the CPU to malicious, and finally to the CPU to place the high-level task, so often the NIC can withstand, The CPU is dead!! So sometimes when the CPU is not strong enough, it is better to buy a low performance card to match the CPU, do not let the CPU exhausted! Say so much I just want to say 64 for Packet SYN attack defense, embedded 800MHZ non 86cpu than 3GHZ 86cpu strong don't know how many times, pers

efficiency of program execution, and does not blindly pursue the efficiency of execution of a program at the ultimate speed. The micro-architecture of GPU is designed for the numerical calculation of matrix type, which is a large number of iterative design of computational units, which can be divided into many independent numerical calculations-a large number of numerical operations of the thread, and the data is not like the logic of the implementation of the logical correlation. From the fre

MySQL limit 0,n. The optimization of MySQL is very important. The other most commonly used and most need to optimize is limit. MySQL's limit brings great convenience to paging, but when the amount of data is large, limit performance drops sharply. Same as 10 data SELECT * FROM Yanxue8_visit limit 10000,10 And SELECT * FROM Yanxue8_visit limit 0,10 is not a level of quantity. There are also many five optimization criteria for limit, which are translated from MySQL

also many five optimization criteria for limit, which are translated from MySQL manual, although correct but not practical. Today found an article written about limit optimization, very good. Original address: http://www.zhenhua.org/article.asp?id=200 (with the original text below)Instead of using limit directly, you first get the ID of offset and then use MySQL limit size directly to get the data. According to his data, it is significantly better to use limit directly. Here I use the data in t

SELECT * FROM Yanxue8_visit limit 0,10is not a level of quantity. There are also many five optimization criteria for limit, which are translated from MySQL manual, although correct but not practical. Today found an article written about limit optimization, very good. Instead of using limit directly, you first get the ID of offset and then use the limit size directly to get the data. According to his data, it is significantly better to use limit directly. Here I use the data in two different sit

large number of complex query operations every second. You can imagine the disk read/write volume. Therefore, we usually think that disk I/O is one of the biggest factors restricting MySQL performance. For Discuz with an average daily access volume of more than 1 million PVS! Forum, due to disk I/O constraints, MySQL performance will be very low! To solve this problem, consider the following solutions: Use a RAID-0 + 1 disk array. Do not try RAID-5, mySQL's efficiency on RAID-5 disk arrays will