Re: "iowait" bug?

On Sun, Mar 22, 2009 at 8:49 AM, Laurent Wandrebeck
 wrote:
> 2009/3/21 M. Edward (Ed) Borasky :
>> I just discovered this on a LinkedIn user group:
>>
>> http://bugzilla.kernel.org/show_bug.cgi?id=12309
>>
>> Is anyone here seeing evidence of this in PostgreSQL??
> I've been hit by an I/O wait problem, as described here:
> https://bugzilla.redhat.com/show_bug.cgi?id=444759
> I've told it to that other bug, but no one seems to have followed that path.

We applied this mwi patch on 3 pgsql servers, and seen great
performance improvement.
Using 3ware, 8 SAS HDD, Octocore (2x4) Xeon and 32GB RAM, on a custom
2.6.18 kernel.

-- 
Laurent Laborde
http://www.over-blog.com/