cpu unit

The code used to control the CPU usage through C ++ in the previous section to display the sine curve is rewritten with C #, which is better. Connection in the previous section: http://www.bkjia.com/kf/201110/107759.html C # code: Using System;Using System. Collections. Generic;Using System. Linq;Using System. Text;Using System. Diagnostics;Namespace cpu_4_2_csharp{Class Program{Static void Main (string [] args){Const int SAMPLING_COUNT = 200;Const d

the CPU utilization rate up. However, if it is an I/O network-intensive process, even if there are more and more client requests, but the server CPU may not be able to go up, this is determined by the natural attributes of the process you want to test. What is CPU utilization? In Linux/Unix, CPU utilization is divided

The last article on how to use LoadRunner monitor Linux performance indicators, but the CPU on a few indicators are not clear, the following detailed said. CPU Utilization good understanding, that is, CPU utilization, more than 75% is higher (also has the argument is 80% or higher). In addition to this indicator, but also in combination with the load average and

/The total execution time of the CPU. In the Linux kernel, there is a global variable: Jiffies. Jiffies indicates the time. Its unit varies with the hardware platform. A constant HZ is defined in the system, representing the number of minimum time intervals per second. In this way, the unit of jiffies is 1/HZ. Jiffies of Intel Platform is measured in 1/100 second

multiple memory addresses may be mapped to the same cacheline, so this bit is used to verify that the Cacheline is the memory unit that the CPU is accessing.When the tag and valid verification is successful, we call the cache hit, just take the unit out of the cache and put it in the CPU register.When the tag or valid

The full name of CPU is central processing unit, that is, the central processor. From the initial appearance to the growth of the CPU, as the manufacturing technology is becoming more and more advanced, more and more electronic components are integrated in it, from tens of thousands to now, even tens of millions of micro transistors constitute the internal struct

Pay attention to the computer hardware description of the person, basically know that the cup is running speed, this speed is actually representative of the CPU in the normal working state of the speed. As with the car engine, because the manufacturer to protect the quality of the CPU, so the speed is not its fastest frequency, and more than the limit frequency is much lower, so the

bus and address bus has been expanded, such as the Pentium data bus to 64 Pentium Pro has an address bus number of 36 bits.Well, the introduction of Intel CPU is here, and the following will begin to return to the center, looking at the registers in the CPU.With all that said, what exactly is a register? In fact, a register is a unit that stores information, or a device, or a container. Like memory, memory

: The number of logical processing penalty cores in the system. For a single-core processing penalty, the class is considered to be its CPU number, and for multi-core processing the penalty can be physical kernel, or the application of Hyper-threading technique virtual Logical kernelVENDOR_ID:CPU BuildersCPU FAMILY:CPU Product Family CodeModel:cpu belongs to which generation in its seriesModel NAME:CPU belongs to the name and its number, the nominal f

Generally speaking, the bulk of the CPU does not have a radiator and the package is a year, and the boxed CPU is with the radiator of the quality package is three years. From a technical point of view, there is no essential difference between bulk and boxed CPUs, at least in terms of quality. Theoretically, there is no gap in performance, stability, and overclocking potential between boxed and bulk products

CPU allocation method is still coarse-grained. For example, many tasks may be IO-intensive and consume very few CPU resources. If you allocate a CPU for it at this time, it is a serious waste, you can make him share a CPU with several other tasks. That is to say, we need to support a more granular

operationIf the machine code represents the function is within the instruction set specification, this machine code can produce microcode, and the normal flow within the CPU. Assuming that the machine code is wrong, it is not possible to pass the decoding phase of the CPU, the control circuit will be error. This situation is reflected in Windows is often a blue screen, because the

CPU can be logically divided into 3 modules, namely the control unit, the arithmetic unit and the storage unit, which are connected by the CPU internal bus. As shown below:Control Unit : control

output (I/O),%hi refers to the time the CPU handles hardware interrupts,%si value is the time the CPU handles software outages,%st when Hypervisor services another virtual processor, the virtual CPU waits for the actual CPU The percentage of timeCPU usage can be derived directly from the top commandIn the kernel of Li

Virtual Memory Management (vmmemory Management) mechanism is widely used in modern operating systems. This requires the support of MMU (Memory Management Unit) in the processor. This section briefly introduces the role of MMU. First, we introduce two concepts: Virtual Address and physical address. If the processor does not have an MMU, or the MMU is not enabled, the memory address sent by the CPU execution

: hardware irq (or) % CPU time spent servicing/handling hardware interruptssi: software irq (or) % CPU time spent servicing/handling software interruptsst: steal time--% CPU time in involuntary wait by virtual cpu while hypervisor is servicing another processor (or) % CPU ti

-mode cpu time ratio ni: User-mode cpu time ratio id allocated by nice-weighted process: idle cpu time ratio wa: cpu waiting for disk write completion time hi: Hard interrupt consumption time si: Soft Interrupt consumption time st: Virtual Machine stealing time Well, if I say I understand the above rules, I am deceivi

: virtual machine steal timeWell, if it's a list of the above rules that I understand, it's self-deception. Here's my own understanding.First of all, how is this percentage calculated?For example, there are 100 CPU time slices in a second, this CPU time slice is the smallest unit of CPU work. Then these 100

This article describes how to use cgroups to restrict cpu resources in Linux to avoid a process occupying all CPU resources. For more information, see This article describes how to use cgroups to manage cpu resources. Let's talk about the cpu usage of the control process. When running multiple programs on a machine tha

Q: Can the CPU fan be universal, if not general how to choose the CPU fan? (I use the Sai Yang 2.4G) For: The CPU fan is generic and is not generic. Common in the market is not universal fan, cheaper, universal fan belongs to high-end products, is recommended by DIY enthusiasts, the price is more expensive.1, if you just want to install a fan 2.4G, then go to t