2010/4/9 Greg Smith <greg@2ndquadrant.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
