Cyrus squatter using only a single core

Jose Luis Rodriguez Garcia joseyluis at gmail.com
Tue Jul 15 15:19:38 EDT 2014


I am not a cyrux expert, but why are you worried that a core is loaded?

It means that the core is working on the task. Does the performance of the
server suffer because of this (response time to users, etc)?
I think that monitor for detect a high load in a core isn't appropriate
measure of performance. It can be useful for detected a hanged process that
takes all your cpu, or historical usages of the cores, but not for other
purposes.

I think that it is more appropriate measure the total usage of cpu of the
server.


On Tue, Jul 15, 2014 at 6:58 PM, Fabio S. Schmidt <fabio at improve.inf.br>
wrote:

> Thank you Bron ! Once I unfortunately do not have the knowledgement
> necessary to create this patch, I will adjust my configurations to run
> squatter at specific times and disable the CPU consumption trigger on my
> monitoring solution.
>
> Even if when running with nice 19 my squatter process causes a high load
> on the core which it's running, it this behavior normal?
>
> Thanks everyone for answering this thread, I know that my english is not
> so good but I'm trying to improve it !
>
> --
>
> My best regards,
> Fabio Soares Schmidt
>
>
>
> On 15 July 2014 03:03, Bron Gondwana <brong at fastmail.fm> wrote:
>
>>  Yes, all Cyrus processes are single threaded except mupdate.  I don't
>> think that running squatter on multiple cores would necessarily be an
>> improvement - and regardless, it's not a priority for me to implement.
>> We'd accept a patch if someone did it and it integrated with the other
>> stuff that's floating around on the fastmail branch.
>>
>> Bron.
>>
>>
>> On Tue, Jul 15, 2014, at 04:13 AM, Fabio S. Schmidt wrote:
>>
>> Hi !
>>
>> I'm running Cyrus 2.4.14 on Debian 6 64 Bits and I've noticed that when
>> squatter is running it only uses a single core. Has this behavior been
>> improved on newer versions?
>>
>> Here is my entry:
>>
>> squatter_1    cmd="/usr/bin/nice +n 19 /usr/lib/cyrus/bin/squatter -s -i
>> -r user" period=180
>>
>>
>> I do run it with "nice +19" but It causes a high load on the core it's
>> running and triggers an alert on my monitoring solution. I know that this
>> alert could be deactivated, but maybe I'm doing something wrong with
>> squatter.
>>
>> --
>>
>> My best regards,
>> Fabio Soares Schmidt
>>
>>
>> Linux Professional Institute - LPIC-3
>> Microsoft Certified Technology Specialist: Active Directory
>>
>>  ----
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>>
>> --
>> Bron Gondwana
>> brong at fastmail.fm
>>
>>
>>
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