From: Luis Garces <Luis.Garces@eurecom.fr>
To: linux-kernel@vger.kernel.org
Subject: Re: want opinions on possible glitch in 2.4 network error reporting
Date: Thu, 07 Feb 2002 10:22:54 +0100 [thread overview]
Message-ID: <3C62476E.5050700@eurecom.fr> (raw)
In-Reply-To: <E16YcOK-0006wT-00@the-village.bc.nu>
Alan Cox wrote:
>> I ran into a somewhat related issue on a 2.2.16 system, where I
>> had an app that was calling sendto() on 217000 packets/sec, even
>> though the wire could only handle about 127000 packets/sec. I
>> got no errors at all in sendto, even though over a third of the
>> packets were not actually being sent.
>>
>
> That is correct UDP behaviour -
>
Yes, TCP provides a reliable point-to-point path, and UDP doesn't. The
problem is considering where does this unreliability starts in the UDP
path. In Alan's opinion (I think) it starts in the very moment data is
passed to the call to sendto() (i.e, includes the kernel in the
unreliable UDP path). Perhaps it is a little sad to see the kernel as
something lossy, but I think it's the nature of UDP.
--
Luis
****
next prev parent reply other threads:[~2002-02-07 9:25 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-06 20:31 want opinions on possible glitch in 2.4 network error reporting Chris Friesen
2002-02-06 20:56 ` Richard B. Johnson
2002-02-06 21:45 ` Ben Greear
2002-02-06 22:23 ` Chris Friesen
2002-02-07 13:44 ` Richard B. Johnson
2002-02-07 16:33 ` Gerold Jury
2002-02-07 0:24 ` Alan Cox
2002-02-07 0:26 ` Alan Cox
2002-02-07 1:51 ` Ion Badulescu
2002-02-07 2:08 ` Alan Cox
2002-02-07 2:09 ` Ion Badulescu
2002-02-07 2:34 ` Alan Cox
2002-02-07 2:54 ` Ion Badulescu
2002-02-07 11:11 ` Alan Cox
2002-02-08 16:11 ` Pavel Machek
2002-02-08 21:39 ` Ion Badulescu
2002-02-07 4:21 ` Ben Greear
2002-02-07 4:38 ` David S. Miller
2002-02-07 4:56 ` Ben Greear
2002-02-07 4:23 ` Ben Greear
2002-02-07 4:37 ` Ion Badulescu
2002-02-07 9:22 ` Luis Garces [this message]
[not found] <3C6192A5.911D5B4F@nortelnetworks.com.suse.lists.linux.kernel>
2002-02-07 0:06 ` Andi Kleen
2002-02-07 15:59 ` Chris Friesen
2002-02-07 16:01 ` Andi Kleen
[not found] <E16Ydys-0007D6-00@the-village.bc.nu.suse.lists.linux.kernel>
[not found] ` <Pine.LNX.4.44.0202062101390.4832-100000@age.cs.columbia.edu.suse.lists.linux.kernel>
2002-02-07 2:47 ` Andi Kleen
2002-02-07 6:25 ` Chris Friesen
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