On Wed, Jun 14, 2006 at 10:46:09AM -0500, Bill Cizek wrote: > Niccolo Rigacci wrote: > > >When the sync is complete, the machine start to respond again > >perfectly. > > > I was able to work around this by lowering > /proc/sys/dev/raid/speed_limit_max to a value > below my disk thruput value (~ 50 MB/s) as follows: > > $ echo 45000 > /proc/sys/dev/raid/speed_limit_max Thanks! This hack seems to solve my problem too. So it seems that the RAID subsystem does not detect a proper speed to throttle the sync. Can you please send me some details of your system? - SATA chipset (or motherboard model)? - Disks make/model? - Do you have the config file of the kernel that you was running (look at /boot/config-<version> file)? I wonder if kernel preemption can be blamed for that, or burst speed of disks can fool the throttle calculation. -- Niccolo Rigacci Firenze - Italy Iraq, missione di pace: 38355 morti - www.iraqbodycount.net - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
