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From: <Taousif_Ansari@DELLTEAM.com>
To: <linux-nfs@vger.kernel.org>
Subject: Performance Issue with multiple dataserver
Date: Wed, 18 May 2011 17:24:45 +0530	[thread overview]
Message-ID: <A1A98FD909DC5248811A65C5D18E9C761DF69B1F18@BLRX7MCDC202.AMER.DELL.COM> (raw)
In-Reply-To: <4DD39D39.7010805@moving-picture.com>

Hi,

I have done pNFS setup with single Dataserver and Two Dataserver and ran the IOzone tool on both, I found that the performance with multiple dataservers is less than the performance with single dataservers.

Here are some numbers, which were captured by the IOzone tool.


							  4	  8	 16	 32	 64	 128	 256	 512	1024	<== Record Length in KB
With Single Dataserver:
Read operation for file size 1 MB-		66415	66359	63630	70358	86223	70256	66047	66068	68489	<== IO kB/sec
Write operation for file size 1 MB-		18827	16920	18846	17039	18896	17009	17173	19206	17947	<== IO kB/sec

With Two Dataservers :
Read operation for file size 1 MB-		36882	381198	38150	38084	38749	33663	34398	37313	37847	<== IO kB/sec
Write operation for file size 1 MB-		5461	4661	5586	4870	5227	4922	4214	5572	4658	<== IO kB/sec


Can somebody tell me What could be the issue....

  reply	other threads:[~2011-05-18 11:54 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-17 16:21 How to control the order of different export options for different client formats? James Pearson
2011-05-17 22:01 ` NeilBrown
2011-05-18 10:19   ` James Pearson
2011-05-18 11:54     ` Taousif_Ansari [this message]
2011-05-18 16:12       ` Performance Issue with multiple dataserver J. Bruce Fields
2011-05-19  5:26         ` Taousif_Ansari
2011-05-19 11:50           ` J. Bruce Fields
2011-05-19 12:39             ` Taousif_Ansari
2011-05-19 13:12               ` J. Bruce Fields
2011-05-19 13:14                 ` Taousif_Ansari
2011-05-19 13:43                   ` J. Bruce Fields
2011-05-19 14:09                     ` Taousif_Ansari-G5Y5guI6XLZWk0Htik3J/w
2011-05-19 14:37                       ` Shyam_Iyer
2011-05-24 11:39                         ` Taousif_Ansari
2011-05-24 11:44                           ` Steven Whitehouse
2011-05-24 11:44                             ` [Cluster-devel] " Steven Whitehouse
2011-05-24 13:17                             ` J. Bruce Fields
2011-05-24 13:17                               ` [Cluster-devel] " J. Bruce Fields
2011-05-18 16:20     ` How to control the order of different export options for different client formats? J. Bruce Fields
2011-05-20 13:38       ` James Pearson
2011-05-20 16:41         ` J. Bruce Fields
2011-06-02 13:37           ` James Pearson
2011-06-04 18:20             ` J. Bruce Fields
2011-06-06 12:14               ` James Pearson
     [not found]             ` <4DE79236.1080808-5Ol4pYTxKWu0ML75eksnrtBPR1lH4CV8@public.gmane.org>
2011-06-07 20:33               ` Steve Dickson
2011-05-18  0:46 ` Max Matveev

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