Re: how could select id=xx so slow?

after check out the wiki page Maciek mentioned, turns out that heavy
connection also burden the disk hardly.
looks like I am in the vicious circle:
1, slow query cause connection blocked so the client request more
connection.
2, more connection cause high disk io and make even the simplest query slow
and block.

I guess I should optimized those queries first...

On Thu, Jul 12, 2012 at 10:20 AM, Craig Ringer <ringerc(at)ringerc(dot)id(dot)au>wrote:

> On 07/12/2012 08:47 AM, Yan Chunlu wrote:
>
> Really sorry for the lack of information
>
> I shouldn't have grumped like that either, sorry about that.
>
>
> I didn't mention the connections number because I don't think my app is
> that busy, and the large number connections was caused by slow queries.
>
>
> Yep - assumptions are a killer like that.
>
> Now you know to watch your system load with iostat, vmstat, top, etc and
> to monitor your overall load.
>
> --
> Craig Ringer
>