From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Morris Subject: TCP stalls in current git, possibly splice related Date: Thu, 12 Jul 2007 16:12:25 -0400 (EDT) Message-ID: Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: "David S. Miller" , netdev@vger.kernel.org To: Jens Axboe Return-path: Received: from mail2.sea5.speakeasy.net ([69.17.117.4]:37778 "EHLO mail2.sea5.speakeasy.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755705AbXGLUM2 (ORCPT ); Thu, 12 Jul 2007 16:12:28 -0400 Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org I'm seeing TCP connection stalls with current git, and a bisect found the following as a possible cause: 534f2aaa6ab07cd71164180bc958a7dcde41db11 is first bad commit commit 534f2aaa6ab07cd71164180bc958a7dcde41db11 Author: Jens Axboe Date: Fri Jun 1 14:52:37 2007 +0200 sys_sendfile: switch to using ->splice_read, if available This patch makes sendfile prefer to use ->splice_read(), if it's available in the file_operations structure. Signed-off-by: Jens Axboe It's a large patch, and not clear if it's the patch itself or coincidental to it. I've looked at some tcpdumps, but may not be able to get back to them until tomorrow or the weekend, & thought it might be useful to get the report out now. - James -- James Morris