On Tue, 26 Jun 2007, Justin Piszcz wrote: > > > On Tue, 26 Jun 2007, Jon Nelson wrote: > > > On Mon, 25 Jun 2007, Justin Piszcz wrote: > > > > > Neil has a patch for the bad speed. > > > > What does the patch do? > > > > > In the mean time, do this (or better to set it to 30, for instance): > > > > > > # Set minimum and maximum raid rebuild speed to 60MB/s. > > > echo "Setting minimum and maximum resync speed to 60 MiB/s..." > > > echo 60000 > /sys/block/md0/md/sync_speed_min > > > echo 60000 > /sys/block/md0/md/sync_speed_max > > > > sync_speed_max defaults to 200000 on this box already. > > I tried a binary search of values between the default (1000) > > and 60000 which resulted in some pretty weird behavior: > > > > at values below 26000 the rate (also confirmed via dstat output) stayed > > low. 2-3MB/s. At 26000 and up, the value jumped more or less instantly > > to 70-74MB/s. What makes 26000 special? If I set the value to 20000 why > > do I still get 2-3MB/s actual? > You want to use sync_speed_min. I forgot to say I changed the values of sync_speed_min. -- Jon Nelson <jnelson-linux-raid@xxxxxxxxxxx> - 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
