From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752072AbXDXEnh (ORCPT ); Tue, 24 Apr 2007 00:43:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752443AbXDXEnh (ORCPT ); Tue, 24 Apr 2007 00:43:37 -0400 Received: from amhost.net ([216.32.88.10]:49090 "EHLO ldic83.amhost.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752072AbXDXEng (ORCPT ); Tue, 24 Apr 2007 00:43:36 -0400 Message-ID: <462D8ACE.5040700@amhost.net> Date: Tue, 24 Apr 2007 07:42:54 +0300 From: Alex Vorona User-Agent: Thunderbird 2.0.0.0 (X11/20070413) MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: Re: sendfile to nonblocking socket References: <462D2177.1060609@amhost.net> <20070423.145909.31640377.davem@davemloft.net> In-Reply-To: <20070423.145909.31640377.davem@davemloft.net> Content-Type: multipart/mixed; boundary="------------010409050206070101080104" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org This is a multi-part message in MIME format. --------------010409050206070101080104 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit David Miller wrote: > From: voron > Date: Tue, 24 Apr 2007 00:13:27 +0300 > > >> As I see, nonblocking mode is enabled - sendfile sends less than asked. >> > > The socket is marked as non-blocking, but the disk I/O is not. > > It's blocking on the disk I/O not the socket part of the operation. > > > How can I told kernel to not block on disk I/O? I tried non-blocking on disk i/o fd, but it seems to be ignored. Strace with both nonblocing disk fd and socket fd in attach #non-blocking on socket fd enabled 04:34:07 ioctl(9, FIONBIO, [1]) = 0 #non-blocking on disk fd enabled 04:34:11 ioctl(12, FIONBIO, [1]) = 0 #normal sendfile 04:34:07 sendfile(9, 12, [444282], 2147477638) = 812682 #32 seconds sendfile 04:34:11 sendfile(9, 12, [261474962], 2147476846) = 2144612230 Thank you, Alex --------------010409050206070101080104 Content-Type: text/plain; name="strace.log" Content-Transfer-Encoding: base64 Content-Disposition: inline; filename="strace.log" MDQ6MzQ6MDQgd3JpdGUoMywgIjIwMDcvMDQvMjQgMDQ6MzQ6MDQgW2luZm9dIDMyMzkwIi4u LiwgODUpID0gODUKMDQ6MzQ6MDQgZXBvbGxfd2FpdCgxMSwge3tFUE9MTElOLCB7dTMyPTM2 MTg1NjIwNjQsIHU2ND02MTYxNDkyNDQyMzE4NH19fSwgNTEyLCA0Mjk0OTY3Mjk1KSA9IDEK MDQ6MzQ6MDcgYWNjZXB0KDgsIHtzYV9mYW1pbHk9QUZfSU5FVCwgc2luX3BvcnQ9aHRvbnMo NTI2NzMpLCBzaW5fYWRkcj1pbmV0X2FkZHIoIjE5Mi4xNjguNzguMSIpfSwgWzUwNTY4NDgz MTA1MjcwNjYxMjhdKSA9IDkKMDQ6MzQ6MDcgaW9jdGwoOSwgRklPTkJJTywgWzFdKSAgICAg 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