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From: David Blundell <David.Blundell@100percentit.com>
To: Mark Nelson <mark.nelson@inktank.com>,
	Alexandre DERUMIER <aderumier@odiso.com>
Cc: "ceph-devel@vger.kernel.org" <ceph-devel@vger.kernel.org>
Subject: RE: Slow request warnings on 0.48
Date: Thu, 5 Jul 2012 18:43:09 +0000	[thread overview]
Message-ID: <45F11B42CB5830479EF0E56A27F4E68D7F4E54@exchange1.ad.100it.net> (raw)
In-Reply-To: <4FF5D5C3.80207@inktank.com>

> Hi David and Alexandre,
> 
> Does this only happen with random writes or also sequential writes?  If it
> happens with sequential writes as well, does it happen with rados bench?
> 
> --
> Mark Nelson
> Performance Engineer
> Inktank

Hi Mark,

I just ran "rados -p data bench 60 write -t 16" and a few dd tests with no problems at all so at the moment it looks like only random IO triggers the slow writes.

Please do let me know if there are any other tests that I can do to help track down the cause.

David

  parent reply	other threads:[~2012-07-05 18:43 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-04 16:53 Slow request warnings on 0.48 David Blundell
2012-07-04 16:58 ` Alexandre DERUMIER
2012-07-04 18:59   ` Gregory Farnum
2012-07-04 22:03     ` David Blundell
2012-07-05 17:58   ` Mark Nelson
2012-07-05 18:16     ` David Blundell
2012-07-05 18:33     ` Alexandre DERUMIER
2012-07-05 18:43     ` David Blundell [this message]
2012-07-05 19:49       ` Mark Nelson
2012-07-05 20:21         ` Samuel Just
2012-07-05 22:15           ` David Blundell
2012-07-19 10:48 Matthew Richardson

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