Richard Scobie <richard@sauce.co.nz> writes: > I am in the process of benchmarking a 4 x 250GB on 3ware 7506 to try and > sort out the myriad of options for RAID and XFS, in order to get best > performance for my workload. > > I have tested with software RAID5 and have just attempted to do the same > for software RAID 10. Unfortunately, it is going to take 31000 minutes, > or around 21 days to sync this array and I wish to test 3 different > stripe sizes. Is there some way to allow more bandwidth for the sync up? echo 200000 > /proc/sys/dev/raid/speed_limit_min It's a known bug. The resync code is trying to be nice to other IO in the system, but forgets that it is itself causing lots of IO in the lower RAID layer. -- Måns Rullgård mru@kth.se - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
