Re: Slow application response on lightly loaded server?

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От Mike Blackwell
Тема Re: Slow application response on lightly loaded server?
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Msg-id CANPAkgsBcq_RHNmSU5-6aSndUnDOEnitViMHdYSVkrsU4j8LBw@mail.gmail.com
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Ответ на Re: Slow application response on lightly loaded server?  (Scott Marlowe <scott.marlowe@gmail.com>)
Ответы Re: Slow application response on lightly loaded server?  (Scott Marlowe <scott.marlowe@gmail.com>)
Список pgsql-performance
I'm wondering about that.  However, the database server and the server doing the bulk loads are on the same subnet.  Traceroute shows only a single hop.  Traceroute and ping both show reply times in the area of .25 - .50 ms or so.  Is that reasonable?

__________________________________________________________________________________
Mike Blackwell | Technical Analyst, Distribution Services/Rollout Management | RR Donnelley
1750 Wallace Ave | St Charles, IL 60174-3401
Office: 630.313.7818
Mike.Blackwell@rrd.com
http://www.rrdonnelley.com





On Tue, Jul 17, 2012 at 12:49 PM, Scott Marlowe <scott.marlowe@gmail.com> wrote:
On Tue, Jul 17, 2012 at 11:37 AM, Mike Blackwell <mike.blackwell@rrd.com> wrote:
>
> On Tue, Jul 17, 2012 at 11:35 AM, Scott Marlowe <scott.marlowe@gmail.com>
> wrote:
>
>> I'd run vmstat and look for high cs or int numbers (100k and above) to
>> see if you're maybe seeing an issue with that.  A lot of times a
>> "slow" server is just too much process switching.  But yeah, the
>> graphs you've posted don't seem overly bad.
>
>
>
> Thanks for the tip.  Here's a quick look at those numbers under that same
> load.  Watching it for a while longer didn't show any spikes.  That doesn't
> seem to be it, either.

Yep it all looks good to me.  Are you sure you're not getting network
lag or something like that?

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