ERROR -> "Variable serf_fetch_active_count cannot lock mutex: Invalid argument"

[GoogleCodeExporter]

What steps will reproduce the problem?
1. build/install mod_pagespeed 0.9.16.9 from source
2. nav to any page on my server

What is the expected output?
no errors

What do you see instead?
these errors:
[Wed Apr 27 08:06:42 2011] [error] [mod_pagespeed 0.9.16.9-647 @22148] 
[0427/080642:ERROR:net/instaweb/apache/apr_statistics.cc(141)] Variable 
serf_fetch_active_count cannot lock mutex: Invalid argument
[Wed Apr 27 08:06:42 2011] [error] [mod_pagespeed 0.9.16.9-647 @22148] 
[0427/080642:ERROR:net/instaweb/apache/apr_statistics.cc(141)] Variable 
serf_fetch_active_count cannot lock mutex: Invalid argument
[Wed Apr 27 08:06:42 2011] [error] [mod_pagespeed 0.9.16.9-647 @22148] 
[0427/080642:ERROR:net/instaweb/apache/apr_statistics.cc(141)] Variable 
cache_time_us cannot lock mutex: Invalid argument
[Wed Apr 27 08:06:42 2011] [error] [mod_pagespeed 0.9.16.9-647 @22148] 
[0427/080642:ERROR:net/instaweb/apache/apr_statistics.cc(141)] Variable 
cache_inserts cannot lock mutex: Invalid argument
[Wed Apr 27 08:06:42 2011] [info] [mod_pagespeed 0.9.16.9-647 @22148] 
http://testdom.loc/sites/test/files/advagg_css/css_3f3528c05b31a30406021ca2c03d2
780_0.css: Unlocking lock /var/cache/mod_pagespeed/files/teh0bMzrGE.lock with 
success=true
[Wed Apr 27 08:06:42 2011] [info] [mod_pagespeed 0.9.16.9-647 @22148] Fetch 
complete: 
http://testdom.loc/sites/test/files/advagg_css/css_3f3528c05b31a30406021ca2c03d2
780_0.css
[Wed Apr 27 08:06:42 2011] [error] [mod_pagespeed 0.9.16.9-647 @22148] 
[0427/080642:ERROR:net/instaweb/apache/apr_statistics.cc(141)] Variable 
serf_fetch_time_duration_ms cannot lock mutex: Invalid argument
[Wed Apr 27 08:06:42 2011] [error] [mod_pagespeed 0.9.16.9-647 @22148] 
[0427/080642:ERROR:net/instaweb/apache/apr_statistics.cc(141)] Variable 
serf_fetch_bytes_count cannot lock mutex: Invalid argument
[Wed Apr 27 08:06:42 2011] [error] [mod_pagespeed 0.9.16.9-647 @22148] 
[0427/080642:ERROR:net/instaweb/apache/apr_statistics.cc(141)] Variable 
serf_fetch_active_count cannot lock mutex: Invalid argument

What version of the product are you using (please check X-Mod-Pagespeed
header)?
X-Mod-Pagespeed: 0.9.16.9-647


On what operating system?
lsb_release -drs
  "openSUSE 11.4 (i586)" 11.4

Which version of Apache?
Which MPM?
httpd2 -V | egrep -i "version|arch|server mpm"
 Server version: Apache/2.2.17 (Linux/SUSE)
 Architecture:   32-bit
 Server MPM:     Prefork

Original issue reported on code.google.com by pgnet.dev on 27 Apr 2011 at 3:29

• Merged into: Statistics failing with "cannot lock mutex: Invalid argument " #215

[GoogleCodeExporter]

Thanks for the detailed report.  Still trying to find the pattern here, since I 
cannot reproduce locally.

Original comment by abl...@google.com on 27 Apr 2011 at 3:37

• Changed state: Duplicate