On Thu, 13 Mar 2003, Wolfram Schlich wrote: > Overall I'm not very satisfied with the current situation, as you'd > expect ;-) The hardware *should* be capable of doing much better, I > believe. First of all, check 'cat /proc/ide/hdX/settings' if the disks are set to their maximum speed. There should be a line 'current_speed' and it should read 69 or 70. In my system, using Promise Ultra100 and Ultra133TX2, the disks are set to speed 34 by default. They do have DMA on, however. So using 'hdparm -X69' helps a lot in my case. The only problem is that if the disks are busy (resyncing the RAID array), I cannot safely use hdparm as it sometimes gets stuck and blocks IDE completely. > I'd be pleased to give more details as needed. > Should I run any tiobench/tiotest or bonnie++ benchmarks? Yes, you should use benchmarks like that and you should limit the amount of memory to prevent caching (or use very large test files which take a lot of time). I usually use 'mem=32M' and then use some 256MB or 512MB test files with tiobench... D. - 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
