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From: Felix von Leitner <felix-linuxkernel@fefe.de>
To: Rick Jones <rick.jones2@hp.com>
Cc: Chuck Ebbert <cebbert@redhat.com>,
	linux-kernel@vger.kernel.org, Netdev <netdev@vger.kernel.org>
Subject: Re: bizarre network timing problem
Date: Fri, 2 Nov 2007 23:38:56 +0100	[thread overview]
Message-ID: <20071102223856.GA5121@codeblau.de> (raw)
In-Reply-To: <472BA5BC.6000901@hp.com>

Thus spake Rick Jones (rick.jones2@hp.com):
> >Oh I'm pretty sure it's not my application, because my application performs
> >well over ethernet, which is after all its purpose.  Also I see the
> >write, the TCP uncork, then a pause, and then the packet leaving.
> Well, a wise old engineer tried to teach me that the proper spelling is 
> ass-u-me :) so just for grins, you might try the TCP_RR test anyway :)  And 
> even if your application is correct (although I wonder why the receiver 
> isn't sucking data-out very quickly...) if you can reproduce the problem 
> with netperf it will be easier for others to do so.

My application is only the server, the receiver is smbget from Samba, so
I don't feel responsible for it :-)

Still, when run over Ethernet, it works fine without waiting for
timeouts to expire.

To reproduce this:

  - smbget is from samba, you probably already have this
  - gatling (my server) can be gotten from
    cvs -d :pserver:cvs@cvs.fefe.de:/cvs -z9 co dietlibc libowfat gatling

dietlibc is not strictly needed, but it's my environment.
First built dietlibc, then libowfat, then gatling.

Felix

  reply	other threads:[~2007-11-02 22:38 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20071017205127.GA21334@codeblau.de>
2007-10-17 21:17 ` bizarre network timing problem Chuck Ebbert
2007-10-17 22:00   ` Felix von Leitner
2007-10-17 22:16     ` Rick Jones
2007-10-18  9:42       ` Felix von Leitner
2007-10-18 17:22         ` Rick Jones
2007-11-02 22:11           ` Felix von Leitner
2007-11-02 22:33             ` Rick Jones
2007-11-02 22:38               ` Felix von Leitner [this message]
2007-11-02 22:58                 ` Rick Jones
2007-11-02 23:23                   ` Felix von Leitner
2007-11-06 21:12                     ` Rick Jones

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