From: Greg Banks <gnb@sgi.com>
To: Justin Piszcz <jpiszcz@lucidpixels.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Kernel 2.6.xx - NFSv3 vs. Samba Data Transfer Semantics
Date: Sun, 7 Aug 2005 12:51:22 +1000 [thread overview]
Message-ID: <20050807025121.GA26391@sgi.com> (raw)
In-Reply-To: <Pine.LNX.4.63.0508061017150.19178@p34>
On Sat, Aug 06, 2005 at 10:34:55AM -0400, Justin Piszcz wrote:
> UDP/NFSv3:
Don't use UDP. It won't help you with this problem, but use TCP.
> UDP/Samba, Win2K->Linux box:
^^^
That would be a surprise.
> When NFS transfers are taking
> place, watching gkrellm, I see 64MB/s for a few seconds then it goes to 0
> as the disk (hda) continues to write for 3-4 seconds, this continues on
> and off.
It's instructive to watch the server's disk traffic on a graph with the
same timescale as the network traffic.
> I am using XFS filesystems on both Linux machines. The drives are 7200RPM
> Seagate HDDs with either 2MB or 8MB of cache.
With a single drive, your transfer rate is going to be disk limited
to probably 40-50 MB/s anyway.
> Are there any 'tweaks' or 'hacks' to make NFS behave more like Samba or
The 'async' export option. RTFM before you use it.
Greg.
--
Greg Banks, R&D Software Engineer, SGI Australian Software Group.
I don't speak for SGI.
prev parent reply other threads:[~2005-08-07 2:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-06 14:34 Kernel 2.6.xx - NFSv3 vs. Samba Data Transfer Semantics Justin Piszcz
2005-08-07 2:51 ` Greg Banks [this message]
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