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Multiple Unexpected Instances Of Httpd Process After Tunning MaxSpareThreads (Doc ID 2577352.1)

Last updated on SEPTEMBER 01, 2021

Applies to:

Oracle HTTP Server - Version 11.1.1.9.0 to 12.2.1.3.0 [Release Oracle11g to 12c]
Information in this document applies to any platform.

Goal

Very high number of  instances of httpd process after tuning MaxSpareThreads to be the same value as MinSpareThreads in the mpm_worker_module

After adjusting OHS to the following settings, a large number of  httpd processes are running:


  ServerLimit 128
  StartServers 32
  MinSpareThreads 1024
  MaxSpareThreads 1024
  ThreadLimit 72
  ThreadsPerChild 32
  MaxClients 4096
  MaxRequestsPerChild 10000
  AcceptMutex fcntl
  LockFile "${ORACLE_INSTANCE}/diagnostics/logs/${COMPONENT_TYPE}/${COMPONENT_NAME}/http_lock"

Previous settings where the issue was not present

  ServerLimit 128
  StartServers 32
  MinSpareThreads 1024
  MaxSpareThreads 2048
  ThreadLimit 72
  ThreadsPerChild 32
  MaxClients 4096
  MaxRequestsPerChild 10000
  AcceptMutex fcntl
  LockFile "${ORACLE_INSTANCE}/diagnostics/logs/${COMPONENT_TYPE}/${COMPONENT_NAME}/http_lock"


Is it acceptable to set the MinSpareThreads and MaxSpareThreads to the same value?
 

Solution

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In this Document
Goal
Solution


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