Date: Fri, 22 Mar 2002 03:10:03 -0800 (PST) From: "Crist J. Clark" <cjc@FreeBSD.ORG> To: freebsd-bugs@FreeBSD.org Subject: Re: bin/36183: natd: cpu usage gets sky high Message-ID: <200203221110.g2MBA3421947@freefall.freebsd.org>
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The following reply was made to PR bin/36183; it has been noted by GNATS.
From: "Crist J. Clark" <cjc@FreeBSD.ORG>
To: emmanuel Duros <eduros@udcast.com>
Cc: freebsd-gnats-submit@FreeBSD.ORG
Subject: Re: bin/36183: natd: cpu usage gets sky high
Date: Fri, 22 Mar 2002 03:02:31 -0800
On Thu, Mar 21, 2002 at 03:56:25PM -0800, emmanuel Duros wrote:
[snip]
> I read the natd code and I am not sure the bug is due to natd...
> During the transfer, the TCP ack packets fill up the pipe completely.
> As soos as we are in this situation (pipe full) natd enters in a bad loop and the cpu uasge increases.
>
> According to the comments in the source, the main loop will take care of the packets which could not be written. Unfortunately, the select does not behave as we would like it to behave:
This code was removed in revision 1.25.2.5 which did not make
4.5-RELEASE. Try 4.5-STABLE to see if this is still a problem for you.
--
Crist J. Clark | cjclark@alum.mit.edu
| cjclark@jhu.edu
http://people.freebsd.org/~cjc/ | cjc@freebsd.org
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