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From Jan Lehnardt <...@apache.org>
Subject Re: couchdb on smp?
Date Mon, 04 May 2009 12:46:08 GMT
Beam and couchjs pipe data back and  forth during view generation.  
While the one works, the other waits. The scheduler is smart enough to  
keep the processes local to a single CPU. Otherwise it's be even more  
expensive.

Cheers
Jan
--

On 04.05.2009, at 12:50, Elf <elf2001@gmail.com> wrote:

> Hello.
> I'm using couchdb-0.9 (erlang 13.2) on my linux server with 4 CPUs
> (Core 2 Quad).
> Every time couchdb needs to reindex views, i see 2 serious processes
> in htop - beam and couchjs. Each of them eats < 100% of 1 cpu, and sum
> of their usage is about (but not greater) 100% of 1 cpu (80/20, 70/30
> and so on).
> Can somebody explain, why that 2 different processes (they have
> differend PIDs) doesn't used different cpus - (one process for cpu)?
>
>
> -- 
> ----------------
> Best regards
> Elf
> mailto:elf2001@gmail.com
>

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