On Tue, Feb 12, 2013 at 09:06:03PM +0000, Cheung, Norman wrote: > [NLC] Only 2 threads in D state. I need to wait for the next > hang to take another stack trace. Is there any workaround I can > reduce the frequencies of this hang. What about reducing the > xfssyncd_centisecs? Or other knobs? You need to isolate the cause of the hang before changing anything. Twiddling random knobs won't improve the situation. Understand the problem first, then take appropriate action. > [NLC] 2 RAID controllers in the system, it hung from disks on > both of them. One is SuperMicro 2208 and the other is LSI > 9265-8I. I think both use the same chipset. Does the filesystem that hangs always belong to the same controller? Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs