From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965245AbWFIMRf (ORCPT ); Fri, 9 Jun 2006 08:17:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965246AbWFIMRf (ORCPT ); Fri, 9 Jun 2006 08:17:35 -0400 Received: from mail.gmx.de ([213.165.64.20]:2974 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S965245AbWFIMRf (ORCPT ); Fri, 9 Jun 2006 08:17:35 -0400 X-Authenticated: #14349625 Subject: Re: 2.6.17-rc6-rt1 From: Mike Galbraith To: =?ISO-8859-1?Q?S=E9bastien_Dugu=E9?= Cc: Ingo Molnar , linux-kernel@vger.kernel.org, Thomas Gleixner , John Stultz , Deepak Saxena In-Reply-To: <1149853468.3829.33.camel@frecb000686> References: <20060607211455.GA6132@elte.hu> <1149842550.7585.27.camel@Homer.TheSimpsons.net> <1149847951.3829.26.camel@frecb000686> <1149852951.7421.7.camel@Homer.TheSimpsons.net> <1149853468.3829.33.camel@frecb000686> Content-Type: text/plain; charset=utf-8 Date: Fri, 09 Jun 2006 14:20:38 +0200 Message-Id: <1149855638.7413.8.camel@Homer.TheSimpsons.net> Mime-Version: 1.0 X-Mailer: Evolution 2.4.0 Content-Transfer-Encoding: 8bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2006-06-09 at 13:44 +0200, Sébastien Dugué wrote: > On Fri, 2006-06-09 at 13:35 +0200, Mike Galbraith wrote: > > > > I found xmms problem. > > > > [pid 8498] 12:53:49.936186 socket(PF_INET, SOCK_STREAM, IPPROTO_IP > > [pid 8498] 12:53:49.936551 <... socket resumed> ) = 9 <0.000301> > > [pid 8498] 12:53:49.936774 fcntl64(9, F_SETFD, FD_CLOEXEC > > [pid 8498] 12:53:49.937287 <... fcntl64 resumed> ) = 0 <0.000465> > > [pid 8498] 12:53:49.937451 setsockopt(9, SOL_SOCKET, SO_REUSEADDR, [1], 4 > > [pid 8498] 12:53:49.937630 <... setsockopt resumed> ) = 0 <0.000110> > > [pid 8498] 12:53:49.937893 connect(9, {sa_family=AF_INET, sin_port=htons(16001), sin_addr=inet_addr("127.0.0.1")}, 16 > > [pid 8498] 12:56:58.902958 <... connect resumed> ) = -1 ETIMEDOUT (Connection timed out) <188.964934> > > > > which should have been... > > > > [pid 7385] 13:21:38.715146 socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 9 <0.000011> > > [pid 7385] 13:21:38.715192 fcntl64(9, F_SETFD, FD_CLOEXEC) = 0 <0.000007> > > [pid 7385] 13:21:38.715237 setsockopt(9, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 <0.000008> > > [pid 7385] 13:21:38.715283 connect(9, {sa_family=AF_INET, sin_port=htons(16001), sin_addr=inet_addr("127.0.0.1")}, 16) = -1 ECONNREFUSED (Connection refused) <0.000060> > > > > So much for the easy part. > > > > I'm starting to believe that it's network related. Pinging my box from > a remote host gives a ~.3 ms round trip whereas pinging localhost gives > ~500ms. Something real weird is going on here. Wow. I don't see anything near 500ms, but I am dropping packets, and recvmsg, when it isn't saying -EAGAIN, is indeed taking way too long. 14:04:02.062550 sendmsg(3, {msg_name(16)={sa_family=AF_INET, sin_port=htons(0), sin_addr=inet_addr("127.0.0.1")}, msg_iov(1)=[{"\10\0$@\217\36\0\2\262c\211D\35\364\0\0\10\t\n\v\f\r\16"..., 64}], msg_controllen=0, msg_flags=0}, 0) = 64 <0.000048> 14:04:02.062731 setitimer(ITIMER_REAL, {it_interval={0, 0}, it_value={10, 0}}, NULL) = 0 <0.000016> 14:04:02.062826 recvmsg(3, {msg_name(16)={sa_family=AF_INET, sin_port=htons(19889), sin_addr=inet_addr("127.0.0.1")}, msg_iov(1)=[{"E\0\0T\177]\0\0@\1\375I\177\0\0\1\177\0\0\1\0\0,@\217\36"..., 192}], msg_controllen=20, {cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=0x1d /* SCM_??? */, ...}, msg_flags=0}, 0) = 84 <0.037660>