Re: Apache Children Stuck on futex

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(Sorry about the grave-dig, but as this is still an issue.)

I'm still coming up to speed on the inner working of mod_perl (I've
never played in it before), but Max asked me to take a look at the futex
problem, so I thought I'd try to pick up where it was left off and
hopefully get this fixed.

My system:
Linux modperl 2.6.38-8-server #42-Ubuntu SMP Mon Apr 11 03:49:04 UTC
2011 x86_64 x86_64 x86_64 GNU/Linux
Apache/2.2.20 (build from Ubuntu source packages with debug symbols)
mod_perl 2.0.5 (build from Ubuntu source packages with debug symbols)

Torsten Förtsch wrote:

> Can you install the symbol tables for your modperl and perhaps check the
> values of *tipool in the core? I think it is
>
> tipool->size == tipool->in_use == tipool->cfg->max

3, 0, and 5 respectively for all threads blocked on
modperl_tipool_wait(tipool).

> BTW, there are IMHO many points about the tipool implementation that
can be improved.
> Why do we use these lists? Wouldn't it be better to allocated an array
of tipool->cfg->max
> pointers? Or perhaps an apr_hash_t in pconf?

As I don't understand the inner workings yet, I don't know, and hope
figure out.

Greg
P.S. Since it's been a while, here is the archived thread:
http://www.gossamer-threads.com/lists/modperl/modperl/103558#103558
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