Re: scheduling problem test13-pre7

From: Matti Aarnio (matti.aarnio@zmailer.org)
Date: Sun Dec 31 2000 - 06:28:50 EST


On Sun, Dec 31, 2000 at 10:42:26AM +0100, Mike Galbraith wrote:
> Hi,
>
> While running iozone, I notice severe stalls of vmstat output
> despite vmstat running SCHED_RR and mlockall().

   Lets eliminate the obvious:

   - Are you running with IDE disk ?
   - Does hdparm /dev/hda(whatever) report:

        /dev/hda:
         unmaskirq = 0 (off)
         using_dma = 0 (off)

   The IKD uses local interrupts, so this isn't necessarily true...

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Sun Dec 31 2000 - 21:00:15 EST