On Sat, Mar 15, 2008 at 12:11:51AM +0100, Keld Jørn Simonsen wrote: > Hi > > I have a 4 drive array with 1 TB Hitachi disks, formatted as raid10,f2 > > I had some strange observations: > > 1. while resyncing I could get the raid to give me about 320 MB/s in > sequential read, which was good. After resync had been done, and with > all 4 drives active, I only get 115 MB/s. This was reproducable. I dont know what could be wrong. I tried to enlarge my readahed, but the system did not allow me to have more than a 2 MiB readahed, - well that should be ok for a 4 disk array with 256 kiB chunks? I did try to have chunks of 64 kiB - but no luck. It seemed like it is something that the resync process builds up. What could it be? Best regards keld -- 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
