| From: | Niels Kristian Schjødt <nielskristian(at)autouncle(dot)com> |
|---|---|
| To: | Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com> |
| Cc: | Merlin Moncure <mmoncure(at)gmail(dot)com>, "pgsql-performance(at)postgresql(dot)org list" <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: Sudden crazy high CPU usage |
| Date: | 2014-03-31 17:21:05 |
| Message-ID: | 794FDEE2-FAC1-4201-AD09-6BCB26234348@autouncle.com |
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| Thread: | |
| Lists: | pgsql-performance |
Thanks, I don’t think overheating is an issue, it’s a large dell server, and I have checked the historic CPU temperature in the servers control panel, and no overheating has shown.
Zone_reclaim_mode is already set to 0
Den 31/03/2014 kl. 16.50 skrev Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com>:
> On Mon, Mar 31, 2014 at 8:24 AM, Niels Kristian Schjødt
> <nielskristian(at)autouncle(dot)com> wrote:
>>
>> Thanks, this seems to persist after a reboot of the server though, and I have never in my server's 3 months life time experienced anything like it.
>
> Could it be overheating and therefore throttling the cores?
>
> Also another thing to look at on large memory machines with > 1 CPU
> socket is zone_reclaim_mode being set to 1. Always set it to 0 on a
> linux machine running postgres.
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