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Posted to bugs@httpd.apache.org by bu...@apache.org on 2003/10/14 01:32:44 UTC
DO NOT REPLY [Bug 23795] New: -
mod_status reports too much CPU when using worker mpm
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=23795
mod_status reports too much CPU when using worker mpm
Summary: mod_status reports too much CPU when using worker mpm
Product: Apache httpd-2.0
Version: 2.0.47
Platform: Other
OS/Version: Other
Status: NEW
Severity: Minor
Priority: Other
Component: mod_status
AssignedTo: bugs@httpd.apache.org
ReportedBy: drees@greenhydrant.com
When looking at /server-status, it is reporting about 10 times too much CPU time
when compared to the prefork MPM. This is on SGI IRIX 6.5.20m compiled with the
following flags and the SGI MIPsPro compiler:
./configure --enable-ssl=static --enable-deflate --enable-mods-shared=most
--with-ssl=/usr/local/ssl --with-devrandom --with-mpm=worker
Here's the relevant output from mod_status when compiled without --with-mpm=worker:
Total accesses: 41 - Total Traffic: 1.9 MB
CPU Usage: u6 s.26 cu0 cs0 - 29.8% CPU load
1.95 requests/sec - 94.1 kB/second - 48.2 kB/request
1 requests currently being processed, 7 idle workers
And with it:
Total accesses: 41 - Total Traffic: 1.9 MB
CPU Usage: u67.21 s3.64 cu0 cs0 - 221% CPU load
1.28 requests/sec - 61.8 kB/second - 48.2 kB/request
1 requests currently being processed, 49 idle workers
With a bit of stress testing with multiple clients, I can get the CPU load
reported to be on the order of 2-4000%, the machine only has 2 CPUs.
The requests on each run was generated from a fresh start over SSL and using the
requests. mod_jk 1.2.5 is also loaded into the server.
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