Hi, I set my computer up to use soft-raid1 arrays over ide. Everything went fine, except the performance is unacceptable. When idle or under very mild load all seems normal, but when reading or writing larger amount of data the machine 'freezes' for some milliseconds up to one second. The load rises to values well above 20 with only one or two processes actually doing something. Using one of the disks alone (via /dev/hd??) works well. But if I detach one of the mirrors of the raid1 array the problem remains. It does not seem possible to crash or freeze the box completely by doing heavier I/O, though. I tried both kernel 2.4.17 and 2.4.18. The motherboard is a ASUS A7V226-E, if that matters. The disks are as masters alone on different ide channels. The md devices are all defined like this: raiddev /dev/md0 persistent-superblock 1 raid-level 1 nr-raid-disks 2 nr-spare-disks 0 chunk-size 64 device /dev/hdc5 raid-disk 0 device /dev/hda5 raid-disk 1 If you have any ideas to overcome this problem, please let me know. I'd have to switch off mirroring otherwise. Thanks, tobias - 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
