“too many open files" ----增大打开的文件数

时间：2023-03-08 20:47:21
 http://www.cnblogs.com/ibook360/archive/2012/05/11/2495405.html

[root@localhost ~]# ab -n  -c  http://192.168.1.26/index.html

This is ApacheBench, Version 2.0.-dev <$Revision: 1.146 $> apache-2.0

Copyright  Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/

Copyright  The Apache Software Foundation, http://www.apache.org/

Benchmarking 192.168.1.26 (be patient)

socket: Too many open files ()
解决：
ulimit -n 65535  
1.只针对当前会话修改,另外一个相同用户会话还是会1024
2.重起失效

说明:不是解决问题根本源因
永久修改有效:

修改/etc/security/limits.conf

*  soft   nofile   32768
*  hard   nofile   65536
所有用户都有效

“*" 还可以基于用户修改:
oracle  soft        nproc   2047

oracle  hard        nproc   16384

oracle  soft        nofile  1024

oracle  hard        nofile  65536






示例：

[root@localhost ~]# cat /etc/security/limits.conf

# /etc/security/limits.conf

#

#Each line describes a limit for a user in the form:

#

#<domain>        <type>  <item>  <value>

#

#Where:

#<domain> can be:

#        - an user name

#        - a group name, with @group syntax

#        - the wildcard *, for default entry

#        - the wildcard %, can be also used with %group syntax,

#                 for maxlogin limit

#

#<type> can have the two values:

#        - "soft" for enforcing the soft limits

#        - "hard" for enforcing hard limits

#

#<item> can be one of the following:

#        - core - limits the core file size (KB)

#        - data - max data size (KB)

#        - fsize - maximum filesize (KB)

#        - memlock - max locked-in-memory address space (KB)

#        - nofile - max number of open files

#        - rss - max resident set size (KB)

#        - stack - max stack size (KB)

#        - cpu - max CPU time (MIN)

#        - nproc - max number of processes

#        - as - address space limit

#        - maxlogins - max number of logins for this user

#        - maxsyslogins - max number of logins on the system

#        - priority - the priority to run user process with

#        - locks - max number of file locks the user can hold

#        - sigpending - max number of pending signals

#        - msgqueue - max memory used by POSIX message queues (bytes)

#        - nice - max nice priority allowed to raise to

#        - rtprio - max realtime priority

#

#<domain>      <type>  <item>         <value>

#

#*               soft    core

#*               hard    rss

#@student        hard    nproc

#@faculty        soft    nproc

#@faculty        hard    nproc

#ftp             hard    nproc

#@student        -       maxlogins

oracle  soft        nproc

oracle  hard        nproc

oracle  soft        nofile

oracle  hard        nofile  

# End of file


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