Linux Performance Analysis in 60,000 Milliseconds shows the first ten commands to use in an investigation (video, PDF). Written by myself and the performance engineering team at Netflix (2015). Linux Performance
The w command shows more than just the current uptime. It shows who is logged in and what they are currently doing. The JCPU is the time used by all processes attached to the terminal and the PCPU shows the time used by the current process in the WHAT column. iostat The iostat comman...
iotop是一个检测Linux系统进程IO的工具,界面类似top,如下图。 [xgj@entel2 ~]$ iotopNetlink error: Operation not permitted (1)The Linux kernel interfaces that iotop relies on now require root privilegesor the NET_ADMIN capability. This change occurred because a security issue(CVE-2011-2494) was ...
One or more of the following commands, intended to disable the Linux offloading of IP functions, might improve the situation:# ethtool -K eth0 rx off (disable RX checksumming offload) # ethtool -K eth0 tso off (disable TCP segmentation offload) # ethtool -K eth0 gso off (disable ...
in your current directory -Cloning example : git clone <URL>, In our situation its --> git clonehttps://github.com/linux-rdma/perftest.git-After cloning, Follow this commands: -cd perftest/ -./autogen.sh -./configure Note:If you want to install in a specific directory use the ...
The example below display the process Id and commands in a hierarchy. –forest is an argument to ps command which displays ASCII art of process tree. From this tree, we can identify which is the parent process and the child processes it forked in a recursive manner. ...
Install the fio tool. If the fio tool is installed, skip this step and run the performance test commands. Linux Operating system Installation command CentOS sudo yum install fio Redhat Alibaba Cloud Linux Ubuntu Run the following commands in sequence: ...
On systems that don’t support Upstart 1.4, the commands are slightly different. See Setting up a production host (StrongLoop documentation) for more information.Run your app in a clusterIn a multi-core system, you can increase the performance of a Node app by many times by launching a ...
Most test cases should install/run well in Debian sid Archlinux CentOS7 There is however some initial support for: OpenSUSE: jobs/trinity.yaml Fedora Clear Linux(>=22640) As for now, lkp-tests still needs to run as root. Adding distribution support ...
The example commands in this chapter show how to set values in the user configuration source.You can also use the --direct and --config-source options to set mandatory values or default values for preferences. You can also use the gconftool-2 command in a script to set the values of ...