From owner-freebsd-bugs@freebsd.org Sun Oct 18 14:27:30 2020 Return-Path: Delivered-To: freebsd-bugs@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 9799A4332FF for ; Sun, 18 Oct 2020 14:27:30 +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 4CDj023bQgz4Wqp for ; Sun, 18 Oct 2020 14:27:30 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 796C84332FE; Sun, 18 Oct 2020 14:27:30 +0000 (UTC) Delivered-To: bugs@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 7934E433261 for ; Sun, 18 Oct 2020 14:27:30 +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 4CDj022kD1z4Wpf for ; Sun, 18 Oct 2020 14:27:30 +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 4285113F18 for ; Sun, 18 Oct 2020 14:27:30 +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 09IERUt1053064 for ; Sun, 18 Oct 2020 14:27:30 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 09IERUuW053063 for bugs@FreeBSD.org; Sun, 18 Oct 2020 14:27:30 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: bugs@FreeBSD.org Subject: [Bug 250436] Regression in 12.stable em driver Date: Sun, 18 Oct 2020 14:27:29 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 12.1-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: chrysalis@chrysalisnet.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter attachments.created Message-ID: 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-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 18 Oct 2020 14:27:30 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D250436 Bug ID: 250436 Summary: Regression in 12.stable em driver Product: Base System Version: 12.1-STABLE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: chrysalis@chrysalisnet.org Created attachment 218861 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D218861&action= =3Dedit smokeping data Hi I upgraded a server using the em driver from 11-STABLE to 12-STABLE 2 days = ago. I had previously tried EM_MULTIQUEUE but it behaved badly so was operating = on single queue. Since the update I am getting latency spikes, confirmed even on LAN. I have smokeping graphs which show this if required, it was initially noticed by myself with lag in the ssh session which seems to come on for a couple of seconds and then disappears, but affects all traffic. I observed that in 12-STABLE multiqueue now seems to be enforced, on other drivers such as igb there is a boot time tunable. Is there a way to toggle multiqueue, or something else I can try to fix it, otherwise I am posting here a problem report. I did also find this PR but has been closed. https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D234570 Chris --=20 You are receiving this mail because: You are the assignee for the bug.=