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From: Shehjar Tikoo <shehjart@gluster.com>
To: linux-nfs@vger.kernel.org
Subject: Streaming perf problem on 10g
Date: Wed, 3 Nov 2010 11:58:02 -0600 (CST)	[thread overview]
Message-ID: <766909857.700951.1288807081999.JavaMail.root@mb2> (raw)

Hi All,

I am running into a performance problem with 2.6.32-23 Ubuntu lucid on both client and server.

The disk is an SSD performing at 1.4 - 1.6Gbps for a dd of a 6gb file in 64k blocks.

The network is performing fine with many Gbps of iperf throughput.

Yet, the dd write performance over the nfs mount point ranges from 96-105 Mbps for a 6gb file in 64k blocks.

I've tried changing the tcp_slot_table_entries and the wsize but there is negligible gain from these.

Does it sound like a client side inefficiency?

Thanks
-Shehjar

             reply	other threads:[~2010-11-03 18:08 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-03 17:58 Shehjar Tikoo [this message]
2010-11-03 18:33 ` Streaming perf problem on 10g Joe Landman
2010-11-03 18:47   ` fibreraid
2010-11-04  8:20     ` Shehjar Tikoo
2010-11-05 11:43       ` fibreraid

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