Linux systems perform well under heavy load, but in some cases, the performance of the system may not be at its best. At this time, we can improve the performance of the system by optimizing the parameters of the Linux system . The Linux system has a large number of parameters, and different parameters have different effects on the system, so administrators need to have certain experience and skills. In this article, we will introduce how to optimize the performance of Linux system by adjusting kernel parameters and system configuration files .
Iptables related
If not necessary, turn off or uninstall the iptables firewall, and prevent the kernel from loading the iptables module. These modules affect concurrency performance.
Maximum number of open files for a single process
The general release version limits the maximum number of files that can be opened by a single process to 1024, which is far from meeting the high concurrency requirements. The adjustment process is as follows:
At the # prompt, type:
# ulimit -n 65535Set the maximum number of files that can be opened by a single process started by root to 65535. If the system returns something similar to "Operation not permitted", it means that the above