Re: Apache::Session::File locks getting stuck

[Javier Alvarado]

I don't know for sure what may be causing the lockups, but I can think 
of two things to try:

1) Use Transaction => 1 when tieing your session.

2) Make sure the session is untied after *every* request (i.e. even if
   a request is aborted, an error occurs in the middle, etc). Otherwise,
   when the next request tries to tie it it will block.
Dan McCormick wrote:

Hi,

I have an Apache 1.3.27/modperl 1.27 site using HTML::Mason 1.20 with
MasonX::Request::WithApacheSession 0.23 on a Redhat 7.3 system.  The
site gets about 5,000 hits/day.
Each day, a few dozen httpds get stuck waiting for locks on the
Apache::Session files.  An lsof on the Apache pids reports things like
this:
httpd   10956 root   11u   REG        3,2       0   705177
/www/.../session_locks/Apache-Session-96d21c169d9c1d5490c04178fca08d8c.lock
httpd   10956 root   22u   REG        3,2       0   705177
/www/.../session_locks/Apache-Session-96d21c169d9c1d5490c04178fca08d8c.lock
and an strace reveals:

flock(11, LOCK_EX

I've set things up per the MasonX::Request::WithApacheSession docs and
sample files, and I'm not doing anything particularly extraordinary with
the sessions.  Anyone have any thoughts on how I might fix the problem?
Thanks,
Dan