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Re: Still thread problems with 1.1.4
On Fri, 19 Feb 1999, Pierangelo Masarati wrote:
> > I had some thread problems with
> > OpenLDAP 1.1.2 earlier, these are still
> > present with 1.1.4 - see attachment.
> > In effect the server hangs after
> > a while.
> > The platform is RedHat 5.1 Intel
> > with the most recent glibc rpm's
> > installed.
> > -psi
> I have the same problem you emphasized. It didn't disappear
> even with OpenLDAP 1.2. But I noticed that your slapd runs
> out of resources always after search 340, exactly as mine does.
> Every search involves 3 thread creations: do_bind(), do_search()
> and do_unbind(), which makes 1020 threads. /usr/include/pthread.h
> of my RedHat 5.1 indirectly includes /usr/include/local_lim.h
> where there is a #define PTHREAD_THREADS_MAX 1024. In my opinion
> the slapd process simply runs out of threads. They are detached
> at creation (at least in my configuration, which should be like
> yours, since we use the same RedHat release), but eventually they
> don't terminate correctly. Maybe pthread_exit() is not invoked
> at the end of connection_operation()
> I'd like to know if you found out anything else.
I struggled with this exact same problem, hoping each new release would
fix the thing. I had the problem on one machine, but not on another. The
thing I found to be the cause of the problem was the version of glibc.
The version with 5.1 is glibc-2.0.7-17. I upgraded to glibc-2.0.7-29, and
the problems went away. That, and there is a typo in servers/slapd/main.c.
It says HAVE_PHRREADS_FINAL instead of HAVE_PTHREADS_FINAL. I don't know
if this has anything to do with it (combination of stuff). Just changing
that to the correct spelling didn't fix the problem.
My suggestion is to upgrade glibc* to 2.0.7-29 (I'm not sure what version
some people consider "latest"). Also check /lib/libpthread-0.7.so. It is
198784 bytes, MD5 = e82d06da5bffcd752bfca1c80f498b22 (with 2.0.7-29).
I thought I posted this to the FAQ-O-Matic. I will now.
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