On 31-Jul-2014 12:00, [email protected] wrote:
Switch them to deadline or noop. echo deadline > /sys/block/sda/queue/scheduler rinse and repeat for other devices.
That may fix the problem but I am still curious about exactly what happened during the terminal stalls. Using the current cfq scheduler what is going on in the system that is keeping those terminal processes from getting any CPU time? These wouldn't respond to a carriage return or an X11 redraw event, and that interaction should have been entirely within bash and other programs already in memory, so there should not be any contention for disk IO there.
Thanks, David Mathog [email protected] Manager, Sequence Analysis Facility, Biology Division, Caltech _______________________________________________ Beowulf mailing list, [email protected] sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
