From: pg@lxra2.for.sabi.co.UK (Peter Grandi)
To: Linux RAID <linux-raid@vger.kernel.org>
Subject: Re: raid5 write latency is 10x the drive latency
Date: Mon, 3 Mar 2014 23:29:38 +0000 [thread overview]
Message-ID: <21269.4194.236349.136774@tree.ty.sabi.co.uk> (raw)
In-Reply-To: <21268.65296.503057.601739@tree.ty.sabi.co.uk>
> [ ... ] Which tool settings? [ ... ]
As to this, how are the 8KiB writes aligned? To 1KiB? 4KiB?
8KiB? To something else?
Is there any other activity on the same physical disks given
that the RAID members seem to be LVs?
Also what's the size of those LV members of the MD set? It may
be quite small...
next prev parent reply other threads:[~2014-03-03 23:29 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-03 13:28 raid5 write latency is 10x the drive latency Alexander Lyakas
2014-03-03 22:15 ` Peter Grandi
2014-03-03 23:29 ` Peter Grandi [this message]
2014-03-04 9:50 ` Alexander Lyakas
2014-03-04 9:41 ` Alexander Lyakas
2014-03-04 22:36 ` Peter Grandi
2014-03-05 0:16 ` Peter Grandi
2014-03-05 4:58 ` NeilBrown
2014-03-16 9:10 ` Alexander Lyakas
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