Re: High %SYS CPU usage - Mailing list pgsql-performance

Hi Josh,

Today is not the worse day for this issue, because Fridays DB have little workload... But I have this output:

http://pastebin.com/bKg8tfKC

I don't have updated OS server from the install.

I also begin to think that the problem is OS misconfiguration (Kernel parameters??) or Hardware problem...

Thanks for your help.

2012/10/30 Josh Berkus <josh@agliodbs.com>

Cesar,

> On this server I have only one database with 312GB of data. The database
> had run fine during 4 months, but from two months ago, during high work
> load periods, the server is collapsed by "%sys" type load.

Hmmm.  Have you updated Linux any time recently?  I'm wondering if this
is a PostgreSQL problem at all.  It sounds like an OS issue.

Can you give us the results of mpstat -P ALL 3 ?  The dstat output
doesn't tell me much.

--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com


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César Martín Pérez
cmartinp@gmail.com