Re: Fwd: Help！Why CPU Usage and LoadAverage Jump up Suddenly

On 12/5/2013 12:46 AM, 吕晓旭 wrote:
> We find so weird problem on our productive PostgreSQL system. And
> I don't know how could I do to resolve this problem.
> We deployed PostgreSQL 9.2.4 on two system environments, and the
> performances between them are absolutely different. one of them it's
> perfect, and the other one lets me down, CPU Usage and LoadAverage
> Jumped up Suddenly when concurrency smoothly rising up,
> simultaneously, average response time become unacceptable.

I'm curious why you built your own postgres instead of using the
yum.postgresql.com repository versions?

and I second the suggestion, IO performance is likely a major factor
here. also, you don't give your postgresql.conf tuning settings,
file systems configurations, hardware storage configurations, etc.

--
john r pierce 37N 122W
somewhere on the middle of the left coast