Re: scheduling problem test13-pre7

2000-12-31 Thread Mike Galbraith
On Sun, 31 Dec 2000, Matti Aarnio wrote: > 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 runni

Re: scheduling problem test13-pre7

2000-12-31 Thread 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)

scheduling problem test13-pre7

2000-12-31 Thread Mike Galbraith
Hi, While running iozone, I notice severe stalls of vmstat output despite vmstat running SCHED_RR and mlockall(). With IKD, I ran a million line ktrace of such a stall, and find no occurance of vmstat's pid. (trace covers a ~full second of kernel time) The only user process which was scheduled