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From: Stan Hoeppner <stan@hardwarefreak.com>
To: Justin Piszcz <jpiszcz@lucidpixels.com>
Cc: "Dr. David Alan Gilbert" <linux@treblig.org>,
	Emmanuel Florac <eflorac@intellique.com>,
	linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org,
	linux-net@vger.kernel.org, Alan Piszcz <ap@solarrain.com>
Subject: Re: Supermicro X8DTH-6: Only ~250MiB/s from RAID<->RAID over 10GbE?
Date: Sat, 05 Feb 2011 17:54:54 -0600	[thread overview]
Message-ID: <4D4DE34E.7010308@hardwarefreak.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1102051753100.8518@p34.internal.lan>

Justin Piszcz put forth on 2/5/2011 4:56 PM:

> Not sure how to copy/paste from an IPMI window, but I made my own
> kernel for 2.6.37 in CentOS 5.5 (a pain) and now it is doing ~482-500MiB/s
> sustained with a single copy (netcat from A->B).  Poor performance with the
> default 2.6.18 kernel.  Seems to also slow down over time, down to 434MiB/s now,
> but it started very quick and it remains between 420-500MiB/s sustained.  Now
> 435-445MiB/s..

I forgot you mentioned CentOS.  Their kernel and apps are always very old.
2.6.18 was release in Sept 2006 IIRC--4+ years ago.  It was the "pirate themed"
release.

With 2.6.37 what do you get with 4 concurrent nfs copy ops?  If the aggregate
nfs throughput doesn't increase, you need to tweak your nfs server (and possibly
client).  With that hardware and a recent kernel you should be able to fill that
10 GbE pipe, or come really close.

-- 
Stan

  reply	other threads:[~2011-02-05 23:54 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-02-05 19:35 Supermicro X8DTH-6: Only ~250MiB/s from RAID<->RAID over 10GbE? Justin Piszcz
2011-02-05 19:42 ` Jean Gobin
2011-02-05 19:54   ` Justin Piszcz
2011-02-05 20:18   ` Justin Piszcz
2011-02-05 20:39     ` Stan Hoeppner
2011-02-05 20:45 ` Emmanuel Florac
2011-02-05 21:05   ` Justin Piszcz
2011-02-05 22:06     ` Dr. David Alan Gilbert
2011-02-05 22:06       ` Dr. David Alan Gilbert
2011-02-05 22:30       ` Justin Piszcz
2011-02-05 22:56         ` Justin Piszcz
2011-02-05 23:54           ` Stan Hoeppner [this message]
2011-02-06  1:08             ` Justin Piszcz
2011-02-06  3:16               ` Stan Hoeppner
2011-02-06 10:16                 ` Justin Piszcz
2011-02-06 13:46                   ` Justin Piszcz
2011-02-06 16:44                     ` Emmanuel Florac
2011-02-06 16:55                     ` Zdenek Kaspar
2011-02-06 17:52                       ` Justin Piszcz
2011-02-06 22:01                   ` Stan Hoeppner
2011-02-07  3:59                     ` Julian Calaby

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