| From: | Richard Huxton <dev(at)archonet(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Any conclusion on the Xeon context-switching issue? |
| Date: | 2006-02-27 16:54:30 |
| Message-ID: | 44032EC6.8020103@archonet.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Tom Lane wrote:
> Richard Huxton <dev(at)archonet(dot)com> writes:
>> Subject says it all really. I've got a new client who seems to be
>> suffering from it, and I'm not sure if any conclusion was reached.
>
> What's he using? 8.1 seems to have alleviated the problem somewhat,
> and I've done more work in CVS tip. It'll never go away entirely,
> because these chips are just not very good at sharing memory, but
> we've certainly reduced it quite a bit from where it was in 7.x.
7.4.12 (.12 as of last week). I've seen context-switching peak at 80000
on a quad-Xeon that really shouldn't be straining.
An upgrade is possible, but obviously needs testing against. Would your
CVS changes be against 8.2-to-be or 8.1.x?
--
Richard Huxton
Archonet Ltd
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Tom Lane | 2006-02-27 17:07:44 | Re: Any conclusion on the Xeon context-switching issue? |
| Previous Message | Mark Woodward | 2006-02-27 16:48:50 | Re: pg_config, pg_service.conf, postgresql.conf .... |