Separating master processes for different services to utilise multiple cores/cpus

[Raphael Jaffey]

I've never seen this problem.  I've been running cyrus for eight years  
now on dual P3 systems, dual Xeon (hyperthreaded), and now dual quad  
core systems.  The load has always been distributed across all  
processors.  Are you sure you're running an SMP kernel?  Although I'd  
think htop would only report on one core if you weren't.

Quoting Atif Ghaffar <atif.ghaffar at gmail.com>:

> Hello all,
>
> Sorry to reply to myself,
>
> Has no-one else really experienced this?
>
>
> Sorry again for the re-post and best regads
> --
> Atif
>
>
> On Wed, Feb 25, 2009 at 11:47 PM, Atif Ghaffar <atif.ghaffar at gmail.com>wrote:
>
>> Hello,
>>
>> I am a long time cyrus user but have not been hands on for a while.
>> At my current job we are running cyrus to manage all mailstore for our ISP.
>>
>> Recently I have migrate a couple of boxes to newer ones with more cores per
>> cpu.
>>
>> when running htop -u cyrus,  i see that only one core is being used for
>> most of the work and that seems to be a waste of the rest of the cpus.
>>
>> We are using the following services (imap, pop3, lmtp, sieve)
>>
>> One thought that comes to mind is to run different master processes which
>> do one service at a time.
>>
>> I am thinking on consolidating into
>>
>> 1. cyrus-master-main (running imap/sieve)
>> 2. cyrus-master-pop3 (running pop3)
>> 3. cyrus-master-lmtp (running lmtp)
>>
>> Does this makes any sense?
>> Would this balance the usage of the CPUs.
>>
>> If yes, I will post the config files for inspection.
>>
>>
>> best regards
>> Atif
>>
>