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Apache HTTP Server Version 2.0

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Please note

This document refers to the 2.0 version of Apache httpd, which is no longer recommended.
If you are using the current versions of httpd (2.2 or 2.4), please visit their documentations instead:
You may follow this link to go to the 2.2 version of this document.

Apache MPM leader

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Description:An experimental variant of the standard worker MPM
Status:MPM
Module Identifier:mpm_leader_module
Source File:leader.c

Summary

Warning

This MPM is experimental, so it may or may not work as expected.

This is an experimental variant of the standard worker MPM. It uses a Leader/Followers design pattern to coordinate work among threads. For more info, see http://deuce.doc.wustl.edu/doc/pspdfs/lf.pdf.

To use the leader MPM, add --with-mpm=leader to the configure script's arguments when building the httpd.

This MPM depends on APR's atomic compare-and-swap operations for thread synchronization. If you are compiling for an x86 target and you don't need to support 386s, or you are compiling for a SPARC and you don't need to run on pre-UltraSPARC chips, add --enable-nonportable-atomics=yes to the configure script's arguments. This will cause APR to implement atomic operations using efficient opcodes not available in older CPUs.

Directives

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