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Message-ID: <Pine.LNX.4.64.0703300412310.18662@p34.internal.lan> Date: Fri, 30 Mar 2007 04:12:37 -0400 (EDT) From: Justin Piszcz <jpiszcz@...idpixels.com> To: Neil Brown <neilb@...e.de> cc: linux-kernel@...r.kernel.org, linux-raid@...r.kernel.org Subject: Re: Software RAID (non-preempt) server blocking question. (2.6.20.4) On Fri, 30 Mar 2007, Neil Brown wrote: > On Thursday March 29, jpiszcz@...idpixels.com wrote: >> >>> >>> Did you look at "cat /proc/mdstat" ?? What sort of speed was the check >>> running at? >> Around 44MB/s. >> >> I do use the following optimization, perhaps a bad idea if I want other >> processes to 'stay alive'? >> >> echo "Setting minimum resync speed to 200MB/s..." >> echo "This improves the resync speed from 2.1MB/s to 44MB/s" >> echo 200000 > /sys/block/md0/md/sync_speed_min >> echo 200000 > /sys/block/md1/md/sync_speed_min >> echo 200000 > /sys/block/md2/md/sync_speed_min >> echo 200000 > /sys/block/md3/md/sync_speed_min >> echo 200000 > /sys/block/md4/md/sync_speed_min >> > > Yes, well.... > > You told it to use up to 200MB/s and the drives are only delivering > 44MB/s, so they will be taking nearly all of the available bandwidth. > You shouldn't be too surprised if other things suffer. > > NeilBrown > Understood, will reduce this, thanks. Justin. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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