[mod_python] ValueError: Failed to acquire global mutex lock

Your system has a low number of sysvsem's configured and it is running
out. Whether you use prefork or worker shouldn't matter. You can
change the number that mod_python uses, setting it to a lower value
using the directive:

  PythonOption mod_python.mutex_locks 4

Must be defined at global scope in Apache configuration. Check Apache
error logs to see if it works.

Note, you must be using mod_python 3.3.1.

Graham

On 16/10/2007, Michael Robokoff <mike.robokoff at apioutsourcing.com> wrote:
>
>
>
>
> Hello,
>
> I just changed from running apache configured with "mpm=prefork" to
> "mpm=worker".
>
> Everything worked with the "prefork" attribute. We decided to change over to
> multi threading
>
> to test performance, so I recompiled apache with the "worker" attribute. Now
> we get the error
>
>
>
> [error] [client]   File
> "/usr/local/lib/python2.5/site-packages/mod_python/Session.py",
> line 280, in lock\n
> _apache._global_lock(self._req.server, self._sid), referer:
> http://......
>
>
>
> "ValueError: Failed to acquire global mutex lock" referer: http:…..
>
>
>
> Can you please give me some direction on this.
>
>
>
>
>
>
>
> Michael Robokoff
>
> Senior Systems Administrator
>
> API Outsourcing
>
>
>
>
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>