From: Pekka Pietikainen <pp@evil.netppl.fi>
To: Tim Sailer <sailer@bnl.gov>
Cc: John Heffner <jheffner@psc.edu>,
linux-kernel@vger.kernel.org, jfung@bnl.gov
Subject: Re: Network Performance?
Date: Thu, 11 Jan 2001 12:00:48 +0200 [thread overview]
Message-ID: <20010111120048.A10115@netppl.fi> (raw)
In-Reply-To: <20010109115302.A32135@bnl.gov> <Pine.NEB.4.05.10101091423060.3675-100000@dexter.psc.edu> <20010109155611.B3563@bnl.gov>
In-Reply-To: <20010109155611.B3563@bnl.gov>
On Tue, Jan 09, 2001 at 03:56:11PM -0500, Tim Sailer wrote:
> > The defaults must be large unless your application calls setsockopt() to
> > set the buffers itself. (Some FTP clients and servers can do this, but
> > for testing, your're still probably better always having the _max's and
> > _default's the same.)
>
> Hm.. OK. I think we tried that, but I'll check again.
And make sure your ftp client/server isn't resetting it to something small
afterwards. For testing this, I'd use a real IP benchmarking program
like iperf/netperf/ttcp, as they'll let you test different buffer sizes
easily (and in the case of iperf tell you what you're actually using
if you hit the limit) For a fast WAN you want something like
512k-1M buffers easily.
--
Pekka Pietikainen
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prev parent reply other threads:[~2001-01-11 10:01 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-04 6:33 Network Performance? Tim Sailer
2001-01-05 19:00 ` Tim Sailer
2001-01-06 11:11 ` Andrew Morton
2001-01-06 15:48 ` Alan Cox
2001-01-08 4:51 ` Tim Sailer
2001-01-08 10:26 ` Andrew Morton
2001-01-08 14:06 ` Tim Sailer
2001-01-08 18:07 ` Erik Mouw
2001-01-09 13:55 ` Tim Sailer
2001-01-09 16:52 ` Martin Josefsson
2001-01-09 18:35 ` Tim Sailer
2001-01-08 18:40 ` Craig I. Hagan
2001-01-09 15:29 ` Tim Sailer
2001-01-08 19:58 ` John Heffner
2001-01-09 16:53 ` Tim Sailer
2001-01-09 19:29 ` John Heffner
2001-01-09 20:56 ` Tim Sailer
2001-01-11 10:00 ` Pekka Pietikainen [this message]
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