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Message-ID: <4D4DCB0E.8050706@yandex.ru>
Date: Sun, 06 Feb 2011 01:11:26 +0300
From: Ruslan Mahmatkhanov <cvs-src@yandex.ru>
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To: Ivan Voras <ivoras@freebsd.org>
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Cc: freebsd-hackers@freebsd.org, davidxu@freebsd.org
Subject: Re: Tracking down a problem with php on FreeBSD
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06.02.2011 00:39, Ivan Voras пишет:
> On 5 February 2011 21:22, Ivan Voras<ivoras@freebsd.org>  wrote:
>> On 5 February 2011 21:03, Ruslan Mahmatkhanov<cvs-src@yandex.ru>  wrote:
>>
>>>
>>> Can you please tell me more what you mean by ""robust" pthreads mutexes" and
>>
>> It's just a name for properties of a mutex; actually this is
>> imprecise, what's needed here is process-shared&  robust
>> (fpm_shm_slots.c: FPM uses shared memory).
>
> Actually I think "robustness" is the key here (in this context it
> means that the locks of a thread / processes are released if a thread
> / process dies unexpectedly (crashes)); It is very likely that in your
> case the PHP process with FPM SAPI module dies while holding a lock
> shared between processes and the other processes get stuck waiting for
> this lock to unlock.

Yes, it seems so. But all of this locking/threading is a black magick 
for me right now, and i don't feel to be able to study out with this fpm 
issue by myself. So i just sent this last obtained info to php-fpm 
mailing list. And thank you again, Ivan, for your analysis and 
explanations.

-- 
Regards,
Ruslan