From: Ben Greear <greearb@candelatech.com>
To: Chris Friesen <cfriesen@nortelnetworks.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: packets being dropped in IP stack but no error counts incrementing?
Date: Tue, 04 Jun 2002 22:03:24 -0700 [thread overview]
Message-ID: <3CFD9B9C.1050906@candelatech.com> (raw)
In-Reply-To: <3CFD01F8.B69152E4@nortelnetworks.com>
I am not sure the UDP drop counters are available. If you do
find them, I'm interested in them too!
Chris Friesen wrote:
> I've been doing some testing on 2.4.18 and I'm seeing an interesting problem.
>
> I have a test tool that simulates bursty UDP traffic by sending a bunch of
> messages and then delaying a while. If I leave the receiving udp socket at its
> normal size, then I can get a significant number of messages just vanishing
> between the ethernet driver and the userspace socket. The driver rx count shows
> that all packets were received, but the userspace program doesn't get all of
> them. netstat/ifconfig/iproute2 rx dropped counts do not increase.
>
> Is this design intent, are we messing a counter increment when dropping packets,
> or am I not looking at the right counter for these numbers?
>
> Thanks,
>
> Chris
>
>
--
Ben Greear <greearb@candelatech.com> <Ben_Greear@excite.com>
President of Candela Technologies Inc http://www.candelatech.com
ScryMUD: http://scry.wanfear.com http://scry.wanfear.com/~greear
next prev parent reply other threads:[~2002-06-05 5:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-04 18:07 packets being dropped in IP stack but no error counts incrementing? Chris Friesen
2002-06-05 5:03 ` Ben Greear [this message]
2002-06-05 17:18 ` Chris Friesen
2002-06-05 18:15 ` andrew may
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