From owner-freebsd-stable@freebsd.org Fri Jan 15 00:05:32 2016 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 88C24A8385D for ; Fri, 15 Jan 2016 00:05:32 +0000 (UTC) (envelope-from hiren@strugglingcoder.info) Received: from mail.strugglingcoder.info (strugglingcoder.info [65.19.130.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mail.strugglingcoder.info", Issuer "mail.strugglingcoder.info" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 6BB0D1F3E for ; Fri, 15 Jan 2016 00:05:31 +0000 (UTC) (envelope-from hiren@strugglingcoder.info) Received: from localhost (unknown [10.1.1.3]) (Authenticated sender: hiren@strugglingcoder.info) by mail.strugglingcoder.info (Postfix) with ESMTPA id 38F0AD2C75; Thu, 14 Jan 2016 16:05:30 -0800 (PST) Date: Thu, 14 Jan 2016 16:05:30 -0800 From: hiren panchasara To: Slawa Olhovchenkov Cc: freebsd-stable@freebsd.org Subject: Re: Strange TCP behaviour in STABLE Message-ID: <20160115000530.GE65195@strugglingcoder.info> References: <20160114234842.GB37895@zxy.spb.ru> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="+JUInw4efm7IfTNU" Content-Disposition: inline In-Reply-To: <20160114234842.GB37895@zxy.spb.ru> User-Agent: Mutt/1.5.23 (2014-03-12) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 15 Jan 2016 00:05:32 -0000 --+JUInw4efm7IfTNU Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 01/15/16 at 02:48P, Slawa Olhovchenkov wrote: > 02:14:20.410159 IP 127.0.0.1.5423 > 127.0.0.1.80: Flags [S], seq 81891926= 3, win 65535, options [mss 16344,nop,wscale 9,sackOK,TS val 749536482 ecr 0= ], length 0 > 02:14:20.410173 IP 127.0.0.1.80 > 127.0.0.1.5423: Flags [S.], seq 6446932= 09, ack 818919264, win 65535, options [mss 16344,nop,wscale 9,sackOK,TS val= 3209080170 ecr 749536482], length 0 > 02:14:20.410193 IP 127.0.0.1.5423 > 127.0.0.1.80: Flags [.], ack 1, win 1= 59, options [nop,nop,TS val 749536482 ecr 3209080170], length 0 > 02:14:20.410212 IP 127.0.0.1.5423 > 127.0.0.1.80: Flags [P.], seq 1:417, = ack 1, win 159, options [nop,nop,TS val 749536482 ecr 3209080170], length 4= 16 > 02:14:20.410236 IP 127.0.0.1.80 > 127.0.0.1.5423: Flags [.], ack 417, win= 158, options [nop,nop,TS val 3209080170 ecr 749536482], length 0 > 02:14:20.412066 IP 127.0.0.1.80 > 127.0.0.1.5423: Flags [P.], seq 1:557, = ack 417, win 159, options [nop,nop,TS val 3209080172 ecr 749536482], length= 556 > 02:14:20.412086 IP 127.0.0.1.5423 > 127.0.0.1.80: Flags [.], ack 557, win= 158, options [nop,nop,TS val 749536484 ecr 3209080172], length 0 > 02:14:20.412163 IP 127.0.0.1.5423 > 127.0.0.1.80: Flags [F.], seq 417, ac= k 557, win 159, options [nop,nop,TS val 749536484 ecr 3209080172], length 0 > 02:14:20.412175 IP 127.0.0.1.80 > 127.0.0.1.5423: Flags [.], ack 418, win= 159, options [nop,nop,TS val 3209080172 ecr 749536484], length 0 > 02:14:20.412241 IP 127.0.0.1.80 > 127.0.0.1.5423: Flags [F.], seq 557, ac= k 418, win 159, options [nop,nop,TS val 3209080172 ecr 749536484], length 0 > 02:14:20.656139 IP 127.0.0.1.80 > 127.0.0.1.5423: Flags [F.], seq 557, ac= k 418, win 159, options [nop,nop,TS val 3209080416 ecr 749536484], length 0 > 02:14:20.918187 IP 127.0.0.1.80 > 127.0.0.1.5423: Flags [F.], seq 557, ac= k 418, win 159, options [nop,nop,TS val 3209080678 ecr 749536484], length 0 > 02:14:21.249783 IP 127.0.0.1.80 > 127.0.0.1.5423: Flags [F.], seq 557, ac= k 418, win 159, options [nop,nop,TS val 3209081010 ecr 749536484], length 0 > 02:14:21.692560 IP 127.0.0.1.80 > 127.0.0.1.5423: Flags [F.], seq 557, ac= k 418, win 159, options [nop,nop,TS val 3209081452 ecr 749536484], length 0 > 02:14:22.371972 IP 127.0.0.1.80 > 127.0.0.1.5423: Flags [F.], seq 557, ac= k 418, win 159, options [nop,nop,TS val 3209082133 ecr 749536484], length 0 > 02:14:23.531776 IP 127.0.0.1.80 > 127.0.0.1.5423: Flags [F.], seq 557, ac= k 418, win 159, options [nop,nop,TS val 3209083292 ecr 749536484], length 0 > 02:14:25.651788 IP 127.0.0.1.80 > 127.0.0.1.5423: Flags [F.], seq 557, ac= k 418, win 159, options [nop,nop,TS val 3209085412 ecr 749536484], length 0 > 02:14:29.722527 IP 127.0.0.1.80 > 127.0.0.1.5423: Flags [F.], seq 557, ac= k 418, win 159, options [nop,nop,TS val 3209089482 ecr 749536484], length 0 > 02:14:37.618090 IP 127.0.0.1.80 > 127.0.0.1.5423: Flags [F.], seq 557, ac= k 418, win 159, options [nop,nop,TS val 3209097379 ecr 749536484], length 0 > 02:14:53.178362 IP 127.0.0.1.80 > 127.0.0.1.5423: Flags [F.], seq 557, ac= k 418, win 159, options [nop,nop,TS val 3209112938 ecr 749536484], length 0 > 02:15:08.737766 IP 127.0.0.1.80 > 127.0.0.1.5423: Flags [F.], seq 557, ac= k 418, win 159, options [nop,nop,TS val 3209128498 ecr 749536484], length 0 > 02:15:24.307989 IP 127.0.0.1.80 > 127.0.0.1.5423: Flags [F.], seq 557, ac= k 418, win 159, options [nop,nop,TS val 3209144068 ecr 749536484], length 0 > 02:15:39.869441 IP 127.0.0.1.80 > 127.0.0.1.5423: Flags [R.], seq 558, ac= k 418, win 159, options [nop,nop,TS val 3209159630 ecr 749536484], length 0 >=20 > What purpose for this retransmits? A few questions: 1) What svn rev are you on?=20 2) Does this happen all the time or is there a specific trigger? 3) Do you see this on -head? Cheers, Hiren --+JUInw4efm7IfTNU Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQF8BAABCgBmBQJWmDfGXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRBNEUyMEZBMUQ4Nzg4RjNGMTdFNjZGMDI4 QjkyNTBFMTU2M0VERkU1AAoJEIuSUOFWPt/le50H/2Z0JKOubGpK3hSpeZ8BA8j4 L9UqLUcup/WFZc2wzjUIxGFolML+Ndnsm8IT5hhVEmMDLJgMXGCN+Z6n83R2gOnE Xoe0Rxw7N18ZJcBEdtdxw1kRi9LRLJretIiapzuZuetX36soDReKlXjY34En0zwD VZLG/DdSR9XfiCVdPkV5WGrBl5LKEPJGqt8ctNqzvVh6ZDr9SLLCwQIe4oWpcluN mfYx0/rX7SYeDa0JbVTP1s/o5lYuMy5iu4XD1xc++7RY29IDj6lkJqIQ05fVnHH5 DAkWK4kTMwSrvzjNkR74xdgzhTJQBQkPytN8CiFn5fIwtMRPPJ5fuchToQwmeiE= =wwK/ -----END PGP SIGNATURE----- --+JUInw4efm7IfTNU--