| From: | Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com> |
|---|---|
| To: | Greg Smith <greg(at)2ndquadrant(dot)com> |
| Cc: | RD黄永卫 <yongwei_huang(at)temp(dot)gtmc(dot)com(dot)cn>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: [PERFORM] About “context-switching issue on Xeon” test case ？ |
| Date: | 2010-04-10 05:07:58 |
| Message-ID: | n2ldcc563d11004092207m813076ddjed47e37621384bb7@mail.gmail.com |
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| Lists: | pgsql-performance |
2010/4/9 Greg Smith <greg(at)2ndquadrant(dot)com>:
> RD黄永卫 wrote:
>>
>> Anybody have the test case of “ context-switching issue on Xeon” from
>> Tm lane ？
>>
>
> That takes me back:
> http://archives.postgresql.org/pgsql-performance/2004-04/msg00280.php
>
> That's a problem seen on 2004 era Xeon processors, and with PostgreSQL
> 7.4. I doubt it has much relevance nowadays, given a) that whole area of
> the code was rewritten for PostgreSQL 8.1, and b) today's Xeons are
> nothing like 2004's Xeons.
Note that I found this comment by some guy named Greg from almost a
year ago that I thought was relevant. (I'd recommend reading the
whole thread.)
http://archives.postgresql.org/pgsql-performance/2009-06/msg00097.php
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