Re: Low CPU Usage

Hola Beto.
I have no idea where to look for that configuration or settings.
Yesterday I red about some drivers problems with SATA disk working togheter with IDE devices with DMA.

Mi server server is a Pentium VI 3.3 with hyper threading (enabled in BIOS), HP Proliant ML 110.

Then I entered to the BIOS and saw in IDE Configuration:
ATA/IDE Configuration [Enhanced]
Configure SATA as [IDE] => it has RAID option too

I have any idea how to continue!!! I don't know if this a SATA problem, a configuration problem or what else. I have installed several servers beggining with postgres 6.4 and I've neved had this kind of problems (always with IDE disks). I think this is a problem with SATA disk i/o, but I don't see how to measure that (I have already set postgresql.conf).

Regards
Agustin

----- Mensaje original ----
De: Norberto Meijome <beto(at)octantis(dot)com(dot)au>
Para: brauagustin-susc(at)yahoo(dot)com(dot)ar
CC: pgsql-performance(at)postgresql(dot)org
Enviado: jueves 20 de septiembre de 2007, 7:53:05
Asunto: Re: [PERFORM] Low CPU Usage

On Wed, 19 Sep 2007 12:13:33 -0700 (PDT)
brauagustin-susc(at)yahoo(dot)com(dot)ar wrote:

> max_stack_depth = 7MB #in the old server is 8MB but if I set in here give me the ulimit error

Hola Agustin :)
otro argentino en el extranjero x aca ;)

anyway, back to English ;)

a long shot but...

check if you have any limits set on the host for CPU usage... you may be
limited to x number of secs / % by the OS scheduler. When you query your CPU,
it will say u are only using 5% or so...

chau,
Beto

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Octantis Pty Ltd

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