Re: scheduling problem test13-pre7

[Matti Aarnio]

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...