Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261419AbVB0Qxq (ORCPT ); Sun, 27 Feb 2005 11:53:46 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261420AbVB0Qxq (ORCPT ); Sun, 27 Feb 2005 11:53:46 -0500 Received: from www.rapidforum.com ([80.237.244.2]:18150 "HELO rapidforum.com") by vger.kernel.org with SMTP id S261419AbVB0Qxp (ORCPT ); Sun, 27 Feb 2005 11:53:45 -0500 Message-ID: <4221FB13.6090908@rapidforum.com> Date: Sun, 27 Feb 2005 17:53:39 +0100 From: Christian Schmid User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8a3) Gecko/20040817 X-Accept-Language: de, en MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: Slowdown on high-load machines with 3000 sockets Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1020 Lines: 22 Hello. The problem here is that starting with 3000 sockets, the syswrite locks more and more on the sockets although the sockets are non-blocking. This just suddenly appears at around 3000 sockets. I have raised min_free_kbytes to 1024000 and then it suddenly did not block anymore. I changed it down to 16000 again and id instantly locked again. Up to 1024000 and no locking. Now it starts blocking again at 4000 sockets even with 1024000 min_free_kbytes, slowing everything down.... what could this be? Its no network-problem. I have discussed this issue with netdev-people for 2 weeks. No memory problem as well I suppose, its 8 gb ram with a 2/2 split... This problem has been observed on a 2.6.10 kernel. Please help. Thank you in advance. Best regards, Chris - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/