| From: | Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com> |
|---|---|
| To: | Claudio Freire <klaussfreire(at)gmail(dot)com> |
| Cc: | Tomas Vondra <tv(at)fuzzy(dot)cz>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: H800 + md1200 Performance problem |
| Date: | 2012-04-04 16:31:28 |
| Message-ID: | CAOR=d=193fmu6=H0Um-OxMTVbNxBK9ucSoqyyExQSRJ-LJ++cQ@mail.gmail.com |
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| Lists: | pgsql-performance |
On Wed, Apr 4, 2012 at 10:28 AM, Claudio Freire <klaussfreire(at)gmail(dot)com> wrote:
> On Wed, Apr 4, 2012 at 1:22 PM, Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com> wrote:
>> Even with fairly late model linux kernels (i.e.
>> 10.04 LTS through 11.04) I've watched the kswapd start up swapping
>> hard on a machine with zero memory pressure and no need for swap.
>> Took about 2 weeks of hard running before kswapd decided to act
>> pathological.
>
> Perhaps you had some overfull partitions in tmpfs?
Nope. Didn't use tmpfs for anything on that machine. Stock Ubuntu
10.04 with Postgres just doing simple but high traffic postgres stuff.
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