https://bz.apache.org/bugzilla/show_bug.cgi?id=60598
Bug ID: 60598
Summary: Graceful restart do not follow changes in
MaxRequestWorkers mpm_prefork
Product: Apache httpd-2
Version: 2.4.7
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: All
Assignee: bugs@httpd.apache.org
Reporter: bistru...@gmail.com
Target Milestone: ---
With multiple graceful restarts apache do not spawn the specified number of
processes as indicated by the mpm_prefork MaxRequestWorkers parameter.
To reproduce the bug take the following steps:
1) start apache with following mpm_prefork.conf file
<IfModule mpm_prefork_module>
MaxRequestWorkers 6
MaxRequestsPerChild 0
</IfModule>
then the 6 children processes are spawned as expected
2) change the mpm_prefork.conf and restart apache gracefully
(sudo apache2ctl -k graceful)
<IfModule mpm_prefork_module>
MaxRequestWorkers 2
MaxRequestsPerChild 0
</IfModule>
the number of children process is reduced to 2 as expected
3) change the mpm_prefork.conf and restart apache gracefully
(sudo apache2ctl -k graceful)
<IfModule mpm_prefork_module>
MaxRequestWorkers 6
MaxRequestsPerChild 0
</IfModule>
the number of children processes still remain fixed to 2 (observed with
(heavy/soft/zero) load on the server). Generally what we saw is that this
behavior happens after a chain of graceful restart when MaxRequestWorkers is
decreased then increased.
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