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  • “too many open files" ----增大打开的文件数

     http://www.cnblogs.com/ibook360/archive/2012/05/11/2495405.html


    [root@localhost ~]# ab -n 40000 -c 1024 http://192.168.1.26/index.html This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0 Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ Copyright 2006 The Apache Software Foundation, http://www.apache.org/ Benchmarking 192.168.1.26 (be patient) socket: Too many open files (24)
    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 0 #* hard rss 10000 #@student hard nproc 20 #@faculty soft nproc 20 #@faculty hard nproc 50 #ftp hard nproc 0 #@student - maxlogins 4 oracle soft nproc 2047 oracle hard nproc 16384 oracle soft nofile 1024 oracle hard nofile 65536 # End of file
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  • 原文地址:https://www.cnblogs.com/zengkefu/p/5581814.html
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