From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christian Schmid Subject: Massvie problems with 3000 sockets Date: Sun, 20 Feb 2005 21:53:44 +0100 Message-ID: <4218F8D8.3040605@rapidforum.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit To: netdev@oss.sgi.com Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org Hello. I have a strange problem with 2.6.10 with many many downloaders. Sockets are set to be non-blocking of course. Its running fine until it needs more than around 3300 sockets (system-wide) then it suddenly blocks on a syswrite although its a non-blocking socket. It blocks only around 100 ms but with 3000 sockets its really a pain. Outgoing-traffic breaks down to 50% with 4000 sockets. I have limited the sockets to 3000 now since it doesn't happen then. Whats wrong there??? As said, it definetly blocks on a syswrite on a non-blocking socket. Best regards, Chris