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  • why apache create child process one more than startservers config param

    From Jeff@21:1/5 to All on Wed Sep 7 20:29:34 2022
    why apache create child process one more than startservers config parameter?

    * http-mpm.conf (worker)
    StartServers 5

    * Real Process count(ps -ef httpd)
    Parrent 1
    Child 6 (one more than 'StartServers 5')

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  • From Eli the Bearded@21:1/5 to spacenasa83@gmail.com on Thu Sep 8 05:00:21 2022
    In comp.infosystems.www.servers.unix, Jeff <spacenasa83@gmail.com> wrote:
    why apache create child process one more than
    startservers config parameter?

    * http-mpm.conf (worker)
    StartServers 5

    * Real Process count(ps -ef httpd)
    Parrent 1
    Child 6 (one more than 'StartServers 5')

    StartServers is not a maximum, it's a hint for expected load at startup.

    MinSpareServers and MaxSpareServers influence the number of processes by controlling how many idle children to have.

    MaxRequestWorkers (aka MaxClients) is the hard cap on the number of
    processes.

    https://httpd.apache.org/docs/2.4/mod/mpm_common.html https://httpd.apache.org/docs/2.4/mod/prefork.html

    Elijah
    ------
    four spare is a good config on a tiny vm

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    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jeff@21:1/5 to All on Wed Sep 7 23:13:36 2022
    2022년 9월 8일 목요일 오후 2시 0분 23초 UTC+9에 Eli the Bearded님이 작성한 내용:
    In comp.infosystems.www.servers.unix, Jeff <space...@gmail.com> wrote:
    why apache create child process one more than
    startservers config parameter?

    * http-mpm.conf (worker)
    StartServers 5

    * Real Process count(ps -ef httpd)
    Parrent 1
    Child 6 (one more than 'StartServers 5')
    StartServers is not a maximum, it's a hint for expected load at startup.

    MinSpareServers and MaxSpareServers influence the number of processes by controlling how many idle children to have.

    MaxRequestWorkers (aka MaxClients) is the hard cap on the number of processes.

    https://httpd.apache.org/docs/2.4/mod/mpm_common.html https://httpd.apache.org/docs/2.4/mod/prefork.html

    Elijah
    ------
    four spare is a good config on a tiny vm

    The one httpd was cgi daemon.

    # pstack 57676
    #0 0x000000387620eb10 in __accept_nocancel () from /lib64/libpthread.so.0
    #1 0x00007fde96fd7bae in cgid_server () from /usr/local/apachesso/modules/mod_cgid.so
    #2 0x00007fde96fd89b4 in cgid_start () from /usr/local/apachesso/modules/mod_cgid.so
    #3 0x00007fde96fd8ad0 in cgid_init () from /usr/local/apachesso/modules/mod_cgid.so
    #4 0x00000000004581c9 in ap_run_post_config ()
    #5 0x0000000000430d59 in main ()

    Thanks.

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