Default number of files opened in Linux

Article Title: number of files opened by default in Linux. Linux is a technology channel of the IT lab in China. Including desktop applications, Linux system management, kernel research, embedded systems, open source, and other basic categories. By default, there are 1024 files opened in Linux. You can view open files through ulimit-.

You can use ulimt-SHn 65530 to modify this limit.

The following settings are required for permanent effect:

1. Add/etc/pam. d/login (this can be done without adding)

Session required/lib/security/pam_limits.so

Pay attention to the comment of this file.

2. Add/etc/security/limits. conf

Www.nofile 1006154

Www is a user. If you want all users to take effect, change it to *. The value is related to the hardware configuration. Do not set it too large.

* Soft nofile 65536

* Hard nofile 65536

3. Modify/etc/rc. local to add

Echo 8061540>/proc/sys/fs/file-max

View the number of files opened by a pid

Lsof-p 123 | wc-l