On Tue, 17 Mar 2009, Gregory Stark wrote:
> Hm, well the tests I ran for posix_fadvise were actually on a Perc5 -- though
> who knows if it was the same under the hood -- and I saw better performance
> than this. I saw about 4MB/s for a single drive and up to about 35MB/s for 15
> drives. However this was using linux md raid-0, not hardware raid.
Right, it's the hardware RAID on the Perc5 I think people mainly complain
about. If you use it in JBOD mode and let the higher performance CPU in
your main system drive the RAID functions it's not so bad.
* Greg Smith gsmith(at)gregsmith(dot)com http://www.gregsmith.com Baltimore, MD
In response to
pgsql-performance by date
|Next:||From: Nagalingam, Karthikeyan||Date: 2009-03-17 05:15:55|
|Subject: Re: deployment query|
|Previous:||From: Greg Smith||Date: 2009-03-17 04:17:24|
|Subject: Re: Postgres benchmarking with pgbench|