From owner-freebsd-transport@freebsd.org Sun May 24 17:51:31 2020 Return-Path: Delivered-To: freebsd-transport@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 699772CC7A0 for ; Sun, 24 May 2020 17:51:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 49VSTH246Pz4Nvy for ; Sun, 24 May 2020 17:51:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 32C742CC79F; Sun, 24 May 2020 17:51:31 +0000 (UTC) Delivered-To: transport@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 3288B2CC750 for ; Sun, 24 May 2020 17:51:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 49VSTG6Zdjz4PBy for ; Sun, 24 May 2020 17:51:30 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id DCEE624BD9 for ; Sun, 24 May 2020 17:51:30 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 04OHpUMu055265 for ; Sun, 24 May 2020 17:51:30 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from bugzilla@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 04OHpUuF055264 for transport@FreeBSD.org; Sun, 24 May 2020 17:51:30 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: bugzilla set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: transport@FreeBSD.org Subject: [Bug 243590] TCP ECN not adhering extremely strictly to RFC3168 can cause massive TCP perf issues Date: Sun, 24 May 2020 17:51:28 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 11.2-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: commit-hook@freebsd.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: net@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-Mailman-Approved-At: Sun, 24 May 2020 17:52:27 +0000 X-BeenThere: freebsd-transport@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Discussions of transport level network protocols in FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 24 May 2020 17:51:31 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D243590 --- Comment #1 from commit-hook@freebsd.org --- A commit references this bug: Author: rscheff Date: Sun May 24 17:51:14 UTC 2020 New revision: 361436 URL: https://svnweb.freebsd.org/changeset/base/361436 Log: MFC r361347: With RFC3168 ECN, CWR SHOULD only be sent with new data Overly conservative data receivers may ignore the CWR flag on other packets, and keep ECE latched. This can result in continous reduction of the congestion window, and very poor performance when ECN is enabled. This does NOT contain the merge of the change to RACK since at this time that code does not exist in stable/11, and there is no plan to merge RACK to stable/11. PR: 243590 Reviewed by: rgrimes (mentor), rrs Approved by: rgrimes (mentor), tuexen (mentor) MFC after: 3 days Sponsored by: NetApp, Inc. Differential Revision: https://reviews.freebsd.org/D23364 Changes: _U stable/11/ stable/11/sys/netinet/tcp_input.c stable/11/sys/netinet/tcp_output.c --=20 You are receiving this mail because: You are on the CC list for the bug.= From owner-freebsd-transport@freebsd.org Sun May 24 18:02:50 2020 Return-Path: Delivered-To: freebsd-transport@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 7D21D2CCE6D for ; Sun, 24 May 2020 18:02:50 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (mailman.nyi.freebsd.org [IPv6:2610:1c1:1:606c::50:13]) by mx1.freebsd.org (Postfix) with ESMTP id 49VSkL2dNsz4Pp5 for ; Sun, 24 May 2020 18:02:50 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 5A26E2CCA7A; Sun, 24 May 2020 18:02:50 +0000 (UTC) Delivered-To: transport@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 59DC22CCE6C for ; Sun, 24 May 2020 18:02:50 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 49VSkL1m70z4Q97 for ; Sun, 24 May 2020 18:02:50 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 34F4125015 for ; Sun, 24 May 2020 18:02:50 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 04OI2ovF088658 for ; Sun, 24 May 2020 18:02:50 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 04OI2ovA088657 for transport@FreeBSD.org; Sun, 24 May 2020 18:02:50 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: transport@FreeBSD.org Subject: [Bug 243590] TCP ECN not adhering extremely strictly to RFC3168 can cause massive TCP perf issues Date: Sun, 24 May 2020 18:02:48 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 11.2-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: rscheff@freebsd.org X-Bugzilla-Status: Closed X-Bugzilla-Resolution: FIXED X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: rscheff@freebsd.org X-Bugzilla-Flags: maintainer-feedback- mfc-stable12? mfc-stable11+ mfc-stable10- exp-run- X-Bugzilla-Changed-Fields: bug_status assigned_to flagtypes.name resolution Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-Mailman-Approved-At: Sun, 24 May 2020 18:08:10 +0000 X-BeenThere: freebsd-transport@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Discussions of transport level network protocols in FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 24 May 2020 18:02:50 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D243590 Richard Scheffenegger changed: What |Removed |Added ---------------------------------------------------------------------------- Status|New |Closed Assignee|net@FreeBSD.org |rscheff@freebsd.org Flags| |maintainer-feedback-, | |mfc-stable12?, | |mfc-stable11+, | |mfc-stable10-, exp-run- Resolution|--- |FIXED --- Comment #2 from Richard Scheffenegger --- rS361347 fixes this issue in HEAD, scheduled for MFC to stable/12 soonish, after rS355273 has been MFC'd --=20 You are receiving this mail because: You are on the CC list for the bug.= From owner-freebsd-transport@freebsd.org Sun May 24 18:23:09 2020 Return-Path: Delivered-To: freebsd-transport@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 8F1CE2CD54A for ; Sun, 24 May 2020 18:23:09 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (mailman.nyi.freebsd.org [IPv6:2610:1c1:1:606c::50:13]) by mx1.freebsd.org (Postfix) with ESMTP id 49VT9n3MKRz4RQg for ; Sun, 24 May 2020 18:23:09 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 734C22CD6FF; Sun, 24 May 2020 18:23:09 +0000 (UTC) Delivered-To: transport@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 7316D2CD9AE for ; Sun, 24 May 2020 18:23:09 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 49VT9n2Xc0z4RkW for ; Sun, 24 May 2020 18:23:09 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 52AAC2506D for ; Sun, 24 May 2020 18:23:09 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 04OIN9pp040005 for ; Sun, 24 May 2020 18:23:09 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 04OIN9lV040002 for transport@FreeBSD.org; Sun, 24 May 2020 18:23:09 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: transport@FreeBSD.org Subject: [Bug 227303] TCP: huge cwnd does not slowly decay while app/rwnd limited, interacts badly with rwnd autosize Date: Sun, 24 May 2020 18:22:58 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Many People X-Bugzilla-Who: rscheff@freebsd.org X-Bugzilla-Status: In Progress X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: transport@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_status Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-Mailman-Approved-At: Sun, 24 May 2020 18:27:54 +0000 X-BeenThere: freebsd-transport@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Discussions of transport level network protocols in FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 24 May 2020 18:23:09 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D227303 Richard Scheffenegger changed: What |Removed |Added ---------------------------------------------------------------------------- Status|New |In Progress --- Comment #8 from Richard Scheffenegger --- The partial fix is D21798 / rS355269. That takes care of "unbounded" growth= of cwnd when the transmit side is application rather than cwnd limited. So cwnd only grows, if it is actually restricting the transmission rate. In order for cwnd to decay over time, when an session becomes app-limited a= nd the app keeps on sending small amounts of data to never enter after_idle, w= ill mean implementing New Congestion Window Validation (RFC7661). --=20 You are receiving this mail because: You are the assignee for the bug.= From owner-freebsd-transport@freebsd.org Wed May 27 22:35:25 2020 Return-Path: Delivered-To: freebsd-transport@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 6FC802F2186 for ; Wed, 27 May 2020 22:35:25 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (mailman.nyi.freebsd.org [IPv6:2610:1c1:1:606c::50:13]) by mx1.freebsd.org (Postfix) with ESMTP id 49XQdT2Pnzz4Hmw for ; Wed, 27 May 2020 22:35:25 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 50BE72F201F; Wed, 27 May 2020 22:35:25 +0000 (UTC) Delivered-To: transport@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 5086C2F2115 for ; Wed, 27 May 2020 22:35:25 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 49XQdT1VV2z4HqV for ; Wed, 27 May 2020 22:35:25 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 2D4E31C244 for ; Wed, 27 May 2020 22:35:25 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 04RMZPPs012438 for ; Wed, 27 May 2020 22:35:25 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from bugzilla@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 04RMZPUh012437 for transport@FreeBSD.org; Wed, 27 May 2020 22:35:25 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: bugzilla set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: transport@FreeBSD.org Subject: [Bug 243590] TCP ECN not adhering extremely strictly to RFC3168 can cause massive TCP perf issues Date: Wed, 27 May 2020 22:35:22 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 11.2-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: commit-hook@freebsd.org X-Bugzilla-Status: Closed X-Bugzilla-Resolution: FIXED X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: rscheff@freebsd.org X-Bugzilla-Flags: maintainer-feedback- mfc-stable12? mfc-stable11+ mfc-stable10- exp-run- X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-Mailman-Approved-At: Thu, 28 May 2020 05:36:06 +0000 X-BeenThere: freebsd-transport@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Discussions of transport level network protocols in FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 May 2020 22:35:25 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D243590 --- Comment #3 from commit-hook@freebsd.org --- A commit references this bug: Author: rscheff Date: Wed May 27 22:34:47 UTC 2020 New revision: 361565 URL: https://svnweb.freebsd.org/changeset/base/361565 Log: MFS r361436: MFC r361347: With RFC3168 ECN, CWR SHOULD only be sent with = new data. Overly conservative data receivers may ignore the CWR flag on other packets, and keep ECE latched. This can result in continuous reduction of the congestion window, and very poor performance when ECN is enabled. This does NOT contain the merge of the change to RACK since at this time that code does not exist in stable/11, and there is no plan to merge RACK to stable/11. PR: 243590 Reviewed by: rgrimes (mentor), rrs Approved by: re(gjb) Sponsored by: NetApp, Inc. Differential Revision: https://reviews.freebsd.org/D23364 Changes: _U releng/11.4/ releng/11.4/sys/netinet/tcp_input.c releng/11.4/sys/netinet/tcp_output.c --=20 You are receiving this mail because: You are on the CC list for the bug.=