From: Mike Snitzer <snitzer@redhat.com>
To: Jon Bernard <jbernard@tuxion.com>
Cc: dm-devel@redhat.com
Subject: Re: poor thin performance, relative to thick
Date: Fri, 15 Jul 2016 14:59:07 -0400 [thread overview]
Message-ID: <20160715185906.GA29580@redhat.com> (raw)
In-Reply-To: <20160714042122.GB24221@helmut>
On Thu, Jul 14 2016 at 12:21am -0400,
Jon Bernard <jbernard@tuxion.com> wrote:
> Do you have any intuition on where to start looking?
Joe asked me a very basic/obvious question: is block zeroing enabled?
(block zeroing is enabled by default -- you have to know to disable it)
If zeroing wasn't disabled that could explain some of the sizable
performance differences. Please use/test the 'skip_block_zeroing'
feature if you aren't already (also see the "Zeroing' section of the
'lvmthin' manpage).
Mike
next prev parent reply other threads:[~2016-07-15 18:59 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-11 20:44 poor thin performance, relative to thick Jon Bernard
2016-07-12 8:28 ` Jack Wang
2016-07-13 3:29 ` Jon Bernard
2016-07-13 14:17 ` Mike Snitzer
2016-07-12 8:30 ` Zdenek Kabelac
2016-07-13 4:00 ` Jon Bernard
2016-07-12 18:46 ` Mike Snitzer
2016-07-14 4:21 ` Jon Bernard
2016-07-14 20:58 ` Mike Snitzer
2016-07-15 18:59 ` Mike Snitzer [this message]
2016-07-15 20:57 ` Jon Bernard
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