multicore cpu

Http://blog.chinaunix.net/uid-24148050-id-300576.html Category: LINUX First, Introduction A new feature on the 2.6 kernel is the PER-CPU variable. As the name suggests, there is a copy of this variable on each processor.The great advantage of PER-CPU is that access to it requires almost no locks, because each CPU works on its own copy.Tasklet, timer_list and oth

One, the instruction set is different Home or employment computer equipped with the ordinary CPU, usually CISC complex instruction set, the pursuit of instruction set of all-inclusive, as far as possible to integrate a variety of commonly used functions to a piece, but the call speed and hit ratio compared to server CPU lower. The server CPU instruction is typi

How to obtain the serial number of a specified CPU in a multi-core or multi-CPU system Author: skyjacker (The post must be complete and indicate the author and source) Http://www.cnpack.orgCnpack iv qq group: 1309702007-01-23 Thanks for passion, bahamut, good morning, air, skyjacker...Without the magical power of bahamut, there is no such article. In multiple CPUs and multiple cores, different serial numbe

Knowledge about Linux CPU and Linux CPU What is the difference between hyper-threading and multithreading? Hyper-threading is understood from the hardware layer, that is, a CPU component (which can be understood as a core) executes multiple commands at the same time, which means that multiple threads are executed at the same time.Multithreading is a concept at th

How to view CPU configuration information in Linux, and how to view cpu configuration in linux Enter the command: cat/proc/cpuinfo Check the number of physical IDs in the output result. If 0 is displayed, there is only one physical cpu; Check the number of processor output results. If there are 0 and 1, there are two logical CPUs. (1) Concepts ① Physical

The CPU cache query tool in Linux and the cpu cache query in linux In Linux, you can use the following tool to query the CPU cache: Method 1: $ Lscpu L1d cache: 32 K Method 2: $ cat /sys/devices/system/cpu/cpu0/cache/index0/size32K $ cat /sys/devices/system/cpu/cpu0/cac

Remove the installation of memory, graphics, etc. are not difficult, but remove the CPU on the motherboard is not easy, a little attention may damage the CPU and motherboard slots, each CPU and CPU fan installation is not necessarily the same, but the same. The following details the computer how to remove the

CPython process is a whole, and at the same time only one of the threads that gets the Gil is running, and the other threads are waiting for the Gil to be released. This explains the results of our experiments above: although there are two threads of the dead loop, and there are two physical CPU cores, because of the GIL limit, two threads just do ticks and the total CPU usage is slightly below 50%. It see

This is a creation in Article, where the information may have evolved or changed. First, the conclusion is listed in the front: Golang performance can be very good, but some native package performance is likely to be retarded, such as RegExp and Encoding/json. If used in high performance requirements, we should optimize according to the actual situation. The use of ON-CPU/OFF-CPU flame dia

The relationship between the maximum memory and CPU supported by the computer, and the maximum memory cpu supported When using a computer, the maximum supported memory is determined by the operating system and hardware. In terms of hardware, the number of CPU address bus determines the IP address range of the CPU in th

the difference between CPU bulk and boxed From the technical point of view, the bulk and boxed CPU is not the essence of the difference, at least in terms of quality and performance does not exist problems, more impossible to have a fake CPU (no manufacturers can counterfeit such high-tech products), of course, do not rule out profiteers after grinding to low fr

Possible factors:1. Ambient temperatureThe cpu temperature has a lot to do with the ambient temperature. It will be a little higher in summer. Generally, the temperature is less than 50 ° when the CPU is idle, less than 65 ° when the CPU is busy, and less than 75 ° when the CPU is working at full speed. In

Http://bbs.xiyuit.com/thread-4143-1-1.htmlplease stay tuned for matching the CPU bandwidth and memory bandwidth! Don't let the memory slow down the CPU. Intel's CPU has certain requirements on memory bandwidth since P4. Why did Intel have to push Rambus to match P4? This is because both SDRAM and ddr ram are insufficient to meet P4's needs. For details, FSB is P

Ways to handle excessive CPU temperature One, clean CPU cooling fan 1 The easiest and most cost-effective way to do this is to use the brush and the fur tiger to clean the fan of the CPU heatsink and to improve the processor's thermal performance after the cleanup. 2 cleaning the fan is a need for patience, and the fan's dead end is not

the difference between CPU bulk and boxed From the technical point of view, the bulk and boxed CPU is not the essence of the difference, at least in terms of quality and performance does not exist problems, more impossible to have a fake CPU (no manufacturers can counterfeit such high-tech products), of course, do not rule out profiteers after grinding to low fr

The CPU is the most complex, most expensive SOC (chip) on the phone, which is also the location of the brain in the cell phone, and is the decisive hardware for the performance of the mobile phone. The development of smartphones to today, the major mobile phone CPU manufacturers from the spring and autumn warring States gradually to the current four-country separation of the Times (Qualcomm, MTK, Samsung, a

Physical CPU: The physical CPU is relative to the virtual CPU concept, refers to the actual existence of the processor, is that we can see, the touch of the CPU, is inserted in the motherboard above.Physical Core: The number of physical cores that are included in the CPU, su

First, the concept① Physical CPUThe number of CPUs in the actual server slot on the physical CPU, the number of physical IDs that can be repeated is several② Logical CPU③CPU Number of coresThe number of chipsets that can process data on a CPU, such as the current i5 760, is a dual-core four-thread

Qualcomm ARM CPU vs. Intel x86 CPU Performance ComparisonWith the advent of the mobile internet era, arm-based CPUs such as Qualcomm (Qualcomm), Texas Instruments (Texas Instruments) have received more and more attention, while the former king's Intel x86 architecture seems to be struggling in the mobile internet due to power consumption issues.The Intel x86 architecture, compared to the arm architecture, i

CPU instruction design, in addition to naming, it is more important to analyze how the instructions can be achieved. For the CPU structure of Figure 3 1, if the instruction is pre-placed in the Irom, then the instruction is executed with one piece of irom removed from the IR instruction register and provided to the control for analysis execution. How each instruction is transformed into a machine action, th