From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christian Schmid Subject: Re: ARGH MORE BUGS!!! Date: Mon, 21 Feb 2005 21:25:34 +0100 Message-ID: <421A43BE.6080604@rapidforum.com> References: <421A3EB8.4050607@rapidforum.com> <421A4244.9090908@tiscali.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: netdev@oss.sgi.com To: Matthias-Christian Ott In-Reply-To: <421A4244.9090908@tiscali.de> Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org netdev@oss.sgi.com has been found in MAINTAINERS in the ipv4/ipv6 section ;) Matthias-Christian Ott wrote: > Christian Schmid wrote: > >> Hi. >> >> Another bug hit me today HARD! I have been experiencing with lowering >> the socket-buffer to see if the behaviour of a slowdown reappears at >> the same position. Result: With a 128 KB send-buffer, the slowdown >> appears at around 3000 sockets. With 64 KB, it didnt appear up to 4500 >> sockets where a small slow-down appeared but I think this was a >> disk-issue. So its definetly something with TCP-memory. >> >> But now I hit another BUG: After I have managed to create 4500 >> sockets, 10 minutes later an interesting phenomenon appeared: It locks >> for 5 seconds every 60 seconds. I first thought this was something in >> my program but I can do what I want, I wasn't able to fix this. Even a >> restart of my program didnt help. It even appears with 400 >> connections. Then I despairedly just restarted the system and: It was >> gone. So what is THIS? >> >> Sorry if I am a bit angry. I know you are doing a really good job. >> Maybe I can donate some money somewhere but PLEASE!!!!! help me fix >> this bugs.... Thank you. >> >> Chris >> >> > Hi! > I'm not a Perl Coder or Socket Specialist, but did try an implementation > of your program in C (maybe it's a perl "bug"?)? And as mentioned in the > other Thread, try to use send () instead of sendfile (). Anyway it's > strange. Try to contact some of the Maintainers and Developers of this > part of the IP v4 implementation in Linux. > > Matthias-Christian Ott > >