From: Joerg Schumacher <schuma@gaertner.de>
To: linux-kernel@vger.kernel.org
Subject: PF_PACKET: packets out of order
Date: Tue, 9 Oct 2001 01:32:16 +0200 (MET DST) [thread overview]
Message-ID: <200110082332.BAA16370@aunt.gaertner.de> (raw)
Hi!
NeTraMet v44b10 uses pcap(3) and complains about timestamps jumping
backwards. Looks like a PF_PACKET socket doesn't receive the packets
in the correct order. Some timestamps from a "tcpdump -tt":
RX: 1001465480.175100 [...]
TX: 1001465480.179111 [...]
RX: 1001465480.177315 [...]
^^^^^^
TX: 1001465480.180514 [...]
RX: 1001465480.179706 [...]
Some more figures (obtained with a quick hack using libpcap-2001.09.25
on two different machines):
2.2.19:
stats: 100000 packets received
0 packets dropped
good: 90222 packets
bad: 9778 packets
max delta: 15850 usec
2.4.1:
stats: 100000 packets received
0 packets dropped
good: 99538 packets
bad: 462 packets
max delta: 471 usec
Any plans to fix this in the kernel?
Regards,
Joerg
--
Gaertner Datensysteme 38114 Braunschweig
Joerg Schumacher Hamburger Str. 273a
Tel: 0531-2335555 Fax: 0531-2335556
next reply other threads:[~2001-10-08 23:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-08 23:32 Joerg Schumacher [this message]
2001-10-08 23:43 ` PF_PACKET: packets out of order David S. Miller
2001-10-09 1:43 ` Joerg Schumacher
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