On Friday December 12, undicizeri@xxxxxxxxx wrote: > I all, > a couple of weeks ago I've updated the kernel (now I'm using .27-7) > and mdadm to version 2.6.7 and now I have terrible RAID1 performance: > during I/O operation I have 100% cpu utilization and all the system > freeze until the operation ends. Seeking and reading from the RAID is > extremely slow (sometime 4 or 5 seconds just to show an "ls -l" > output) and writing is even worst. > I've tested the same hard disk without RAID and It seem working well. What filesystem are you using on the RAID? If you disable barriers (maybe -o barriers=0 or -o nobarriers) does that change the performance? NeilBrown -- 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
