From: "David S. Miller" <davem@redhat.com>
To: cwidmer@iiic.ethz.ch
Cc: linux-kernel@vger.kernel.org
Subject: Re: unnecessary retransmit from network stack
Date: Fri, 05 Oct 2001 16:11:05 -0700 (PDT) [thread overview]
Message-ID: <20011005.161105.78709492.davem@redhat.com> (raw)
In-Reply-To: <200110051229.f95CTvN00624@mail.swissonline.ch>
In-Reply-To: <200110051229.f95CTvN00624@mail.swissonline.ch>
From: Christian Widmer <cwidmer@iiic.ethz.ch>
Date: Fri, 5 Oct 2001 14:29:53 +0200
why does net_dev.hard_start_xmit get called multiple times
with the same tcp packet?
Because the ACK is not coming back for those packets within the RTO
(which for a local network is very low). Check your TCP dumps,
the ACKs of the original data packets are being dropped in transit.
Franks a lot,
David S. Miller
davem@redhat.com
next prev parent reply other threads:[~2001-10-05 23:11 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-05 12:29 unnecessary retransmit from network stack Christian Widmer
2001-10-05 23:11 ` David S. Miller [this message]
2001-10-06 9:59 ` Mika Liljeberg
-- strict thread matches above, loose matches on Subject: below --
2001-10-06 11:18 Manfred Spraul
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