On Fri, Jul 01 2005, Miller, Mike (OS Dev) wrote:
> Jens Axboe wrote:
> > Different thing, I'm talking about single volume starvation,
> > not volume-to-volume.
> >
> > > elevator algoritm(s) may be causing writes to starve reads
> > on the same
> > > logical volume. We continue to investigate our other
> > performance issues.
> >
> > I completely disagree. Even with an intelligent io scheduler,
> > starvation is seen on ciss that does not happen on other
> > queueing hardware such as 'normal' scsi controllers/drives.
> > So something else is going on, and the only 'fix' so far is
> > to limit the ciss queue depth heavily.
>
> We will investigate this further and come up with a solution. Could be
> the firmware, I suppose.
Unfortunately I don't have any hardware at hand for testing, so I cannot
do it myself. Would be appreciated!
--
Jens Axboe
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
| |
 |