From: John Cagle <jcagle@kernel.org>
To: linuxppc-embedded@lists.linuxppc.org
Subject: 405GP network receive problem
Date: Fri, 29 Jun 2001 10:46:18 -0700 [thread overview]
Message-ID: <20010629104618.A22541@kernel.org> (raw)
In-Reply-To: <Pine.LNX.3.95.1010627084008.2380C-100000@november.bhjjh.erols.com>; from ghurwitz@dyndns.com on Wed, Jun 27, 2001 at 08:43:16AM -0400
I am debugging a custom board design based on the 405GP and have a problem
receiving lots of TCP/IP traffic (like FTP). We're using a 2.4 kernel based
on Monta Vista's CDK 1.2. UDP traffic (like TFTP) works very well, but it
doesn't ever have back-to-back receives, typically. The problem occurs
at both 10mbit and 100Mbit.
I have narrowed the problem down (using ttcp) to the following:
During back-to-back receives (within microseconds) of two large (1500 bytes)
TCP packets, the second packet is usually dropped by the 405GP. When I
check ifconfig statistics, it shows the 1 lost packet, but also shows 2
framing errors.
Has anyone else seen this type of problem with the 405GP or does anyone
know what the problem might be?
Thanks,
John
------------------------------
John Cagle <jcagle@kernel.org>
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2001-06-29 17:46 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-06-27 12:43 Proper way to flush caches Justin (Gus) Hurwitz
2001-06-29 17:46 ` John Cagle [this message]
2001-06-29 18:57 ` 405GP network receive problem Armin Kuster
2001-07-04 18:52 ` Raymond Lo
-- strict thread matches above, loose matches on Subject: below --
2001-07-04 20:31 Marti, Felix
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