Re: Plone timeout

On 04/10/2015 12:57 AM, Maurits van Rees wrote:
> Yuri schreef op 09-04-15 om 11:30:
>> Il 09/04/2015 09:39, Maurits van Rees ha scritto:
>>> dieter schreef op 09-04-15 om 07:52:
>>>> Chuck Theobald <[email protected]> writes:
>>>>> ...
>>>>> One of my customers ran into an unresponsive situation wherein my web
>>>>> site checked out for 15-20 minutes ...
>>>>> Is this typical behavior?
>>>> No.
>>>> Apparently, something in your system is doing something strange.
>>>>
>>>> To analyse situations like this, I have developped a "request monitor" --
>>>> now available as "haufe.requestmonitoring" on PyPI.
>>>> With it, you can (among other things) set up a monitor
>>>> for long running requests logging tracebacks (you know from
>>>> the "error_log" object) for requests that run surprisingly long.
>>>> Bases on these tracebacks, you get valuable information what
>>>> those long runnings requests are and what they are doing.
>>> Also, you can send a SIGUSR1 kill signal to the Zope process to print
>>> what the threads are doing:
>>> http://docs.zope.org/zope2/releases/2.13/SIGNALS.html
>>>
>>> So: kill -SIGUSR1 your-zope-process-id
>>>
>>> When you use supervisor to start the zope instance, the output may end
>>> up in something like var/log/supervisor-instance-stdout.log.  It may
>>> also take a while for it to end up there.
>>>
>>>
>> Works only on debug, I think. Would be useful to have this also in
>> production.
> I have used it in production and it works just fine.  Well, there is
> probably a minimum version for this, which I do not know.
>
> The tricky thing can be finding out where the output ends up.  Do the
> kill signal, wait a few seconds, and check which files in var/log were
> changed since then, and look in them.
>
>

Apparently this did not work for me, sent the signal yesterday, but no 
new *log* files appear in my zinstance directory.

haufe.requestmonitoring sounds promising, but I do not understand parts 
of the instructions, in particular "monitor.zcml must be activated". An 
analogy would be to say "start the car": I don't know what the key looks 
like and I would not know where to put it even if I could get into the car.

-- 
Chuck Theobald
System Administrator
The Robert and Beverly Lewis Center for Neuroimaging
University of Oregon
P: 541-346-0343
F: 541-346-0345


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