[Beowulf] What are people seeing performance-wise for NFS over
libo at buaa.edu.cn
Thu Feb 28 16:14:43 PST 2008
Just a silly question, Is there anybody got the similiar benchmark for Samba or Windows file sharing?
----- Original Message -----
From: "Joe Landman" <landman at scalableinformatics.com>
To: "Beowulf Mailing List" <beowulf at beowulf.org>
Sent: Thursday, February 28, 2008 9:53 PM
Subject: [Beowulf] What are people seeing performance-wise for NFS over 10GbE
> Hi folks:
> Have a few simple setups that I am trying to figure out if I have a
> problem, or if what I am seeing is normal.
> Two 10 GbE cards, connected with a CX4 cable. Server is one of our
> JackRabbits, with 750+ MB/s direct IO and 500-650 MB/s buffered IO
> (read-write), for IO about 10x system ram (~100x RAID cache).
> Getting ok iperf numbers, about 7 Gb/s single thread. Running NFS,
> and seeing ~200-300 MB/s best case between the systems. Is this what
> others have seen? Latest drivers from vendor, sent a note to them to
> see if we can figure this out. Figured I would tap into the 'wulf
> collective memory to learn what other people see.
> 184.108.40.206 kernel on both sides, jumbo frames enabled. No switch, just
> a CX4 cable.
> My expectations are that we would be able to see 80-90% of the
> JackRabbits speed, with the rest being eaten by stack issues. This is
> the case over channel bonded GbE.
> Do you see 500 MB/s or more? Less?
> Joseph Landman, Ph.D
> Founder and CEO
> Scalable Informatics LLC,
> email: landman at scalableinformatics.com
> web : http://www.scalableinformatics.com
> phone: +1 734 786 8423
> fax : +1 866 888 3112
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