From: Graham Leggett Date: Sat, 26 Sep 2015 22:22:31 +0000 (+0000) Subject: Update transformations. X-Git-Tag: 2.4.17~102 X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=f92802fc31f875c9a738b4435c7ea08a8363c7f0;p=apache Update transformations. git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1705493 13f79535-47bb-0310-9956-ffa450edef68 --- diff --git a/docs/manual/mod/directives.html.en b/docs/manual/mod/directives.html.en index 0673d45ef2..280332ffb9 100644 --- a/docs/manual/mod/directives.html.en +++ b/docs/manual/mod/directives.html.en @@ -347,6 +347,7 @@
  • LimitXMLRequestBody
  • Listen
  • ListenBackLog
    • +
  • ListenCoresBucketsRatio
  • LoadFile
  • LoadModule
  • <Location>
    • diff --git a/docs/manual/mod/mpm_common.html.en b/docs/manual/mod/mpm_common.html.en index 4e53e370e4..59ef8a0b5f 100644 --- a/docs/manual/mod/mpm_common.html.en +++ b/docs/manual/mod/mpm_common.html.en @@ -43,6 +43,7 @@ more than one multi-processing module (MPM)
  • GracefulShutdownTimeout
  • Listen
  • ListenBackLog
    • +
  • ListenCoresBucketsRatio
  • MaxConnectionsPerChild
  • MaxMemFree
  • MaxRequestWorkers
    • @@ -252,6 +253,41 @@ including other causes. but use a number based on (but normally larger than) what is set.

    + +
    top
    +

    ListenCoresBucketsRatio Directive

    + + + + + + + + +
    Description:Ratio between the number of CPU cores (online) and the number of +listeners' buckets
    Syntax:ListenCoresBucketsRatio ratio
    Default:ListenCoresBucketsRatio 0 (disabled)
    Context:server config
    Status:MPM
    Module:event, prefork, worker
    Compatibility:Available in Apache HTTP Server 2.4.13, with a kernel supporting +the socket option SO_REUSEPORT and distributing new connections +evenly accross listening processes' (or threads') sockets using it (eg. Linux +3.9 and later, but not the current implementations of SO_REUSEPORT +in *BSDs.
    +

    A ratio between the number of (online) CPU cores and the + number of listeners' buckets can be used to make Apache HTTP Server create + num_cpu_cores / ratio listening buckets, each containing its + own Listen-ing socket(s) on the same port(s), and + then make each child handle a single bucket (with round-robin distribution + of the buckets at children creation time).

    + +

    ListenCoresBucketsRatio can improve the + scalability when accepting new connections is/becomes the bottleneck. + On systems with a large number of CPU cores, enabling this feature has + been tested to show significant performances improvement and shorter + responses time.

    + +

    There must be at least twice the number of CPU cores than the + configured ratio for this to be active. The recommended + ratio is 8, hence at least 16 + cores should be available at runtime when this value is used.

    +
    top

    MaxConnectionsPerChild Directive

    diff --git a/docs/manual/mod/mpm_common.xml.de b/docs/manual/mod/mpm_common.xml.de index dae9479b1e..b903abb1f2 100644 --- a/docs/manual/mod/mpm_common.xml.de +++ b/docs/manual/mod/mpm_common.xml.de @@ -1,7 +1,7 @@ - + + +