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Make a program run slowly
... in turn slow everything down. This requires a kernel rebuild.
You can use CPU Frequency Scaling mechanism (requires kernel module) and control (slow down, speed up) the CPU using the cpufreq-set command.
Another possibility is to call sched_yield(), which will yield quantum to other processes, in p...
How to get the CPU Usage in C#?
I want to get the overall total CPU usage for an application in C#. I've found many ways to dig into the properties of processes, but I only want the CPU usage of the processes, and the total CPU like you get in the TaskManager.
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What do 'real', 'user' and 'sys' mean in the output of time(1)?
...like the other. Real refers to actual elapsed time; User and Sys refer to CPU time used only by the process.
Real is wall clock time - time from start to finish of the call. This is all elapsed time including time slices used by other processes and time the process spends blocked (for example if...
Tracking CPU and Memory usage per process
I suspect that one of my applications eats more CPU cycles than I want it to. The problem is - it happens in bursts, and just looking at the task manager doesn't help me as it shows immediate usage only.
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How to obtain the number of CPUs/cores in Linux from the command line?
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grep -c ^processor /proc/cpuinfo
will count the number of lines starting with "processor" in /proc/cpuinfo
For systems with hyper-threading, you can use
grep ^cpu\\scores /proc/cpuinfo | uniq | awk '{print $4}'
which should return (for e...
c/c++如何获取CPU的序列号？ - C/C++ - 清泛网 - 专注C/C++及内核技术
c/c++如何获取CPU的序列号？获取CPU序列表的完整实例代码如下：#include "stdafx.h"#include <afx.h>CString GetCpuSerial(){unsigned long st1 = 0;un...获取CPU序列表的完整实例代码如下：
#include "stdafx.h"
#include <afx.h>
CString GetCpuSerial()
{
unsigne...
MySQL high CPU usage [closed]
Recently my server CPU has been going very high.
3 Answers
3
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What does multicore assembly language look like?
...haring is discussed at:
How are cache memories shared in multicore Intel CPUs?
http://stackoverflow.com/questions/4802565/multiple-threads-and-cpu-cache
Can multiple CPU's / cores access the same RAM simultaneously?
Intel hyperthreads have greater cache and pipeline sharing than separate cores: ...
Is there an equivalent to CTRL+C in IPython Notebook in Firefox to break cells that are running?
...it useful. This python script will find any jupyter kernel using more than cpu_threshold CPU and prompts the user to send a SIGINT to the kernel (KeyboardInterrupt). It will keep sending SIGINT until the kernel's cpu usage goes below cpu_threshold. If there are multiple misbehaving kernels it will p...
Can linux cat command be used for writing text to file?
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I use the following code to write raw text to files, to update my CPU-settings. Hope this helps out!
Script:
#!/bin/sh
cat > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor <<EOF
performance
EOF
cat > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor <<EOF
pe...