Re: High CPU Utilization

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@gregsmith.com http://www.gregsmith.com Baltimore, MD