From owner-freebsd-net@freebsd.org Tue Oct 20 21:49:00 2020 Return-Path: Delivered-To: freebsd-net@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 77BD043B6FE for ; Tue, 20 Oct 2020 21:49:00 +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 4CG6hX2fF8z4npS for ; Tue, 20 Oct 2020 21:49:00 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 5AC9F43BA8A; Tue, 20 Oct 2020 21:49:00 +0000 (UTC) Delivered-To: net@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 5A87F43B46A for ; Tue, 20 Oct 2020 21:49:00 +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 4CG6hX1mzgz4npR for ; Tue, 20 Oct 2020 21:49:00 +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 207011BA86 for ; Tue, 20 Oct 2020 21:49:00 +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 09KLn0ux065857 for ; Tue, 20 Oct 2020 21:49:00 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 09KLn0mO065854 for net@FreeBSD.org; Tue, 20 Oct 2020 21:49:00 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: net@FreeBSD.org Subject: [Bug 248652] iflib: netmap pkt-gen large TX performance difference between 11-STABLE and 12-STABLE/CURRENT on ix & ixl NIC Date: Tue, 20 Oct 2020 21:49:00 +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: 12.0-STABLE X-Bugzilla-Keywords: iflib, needs-qa, performance, regression X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: sg@efficientip.com X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: vmaffione@FreeBSD.org X-Bugzilla-Flags: maintainer-feedback? maintainer-feedback? mfc-stable12? mfc-stable11- 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-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Oct 2020 21:49:00 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D248652 --- Comment #29 from Sylvain Galliano --- (In reply to Vincenzo Maffione from comment #28) Yes, this is much better: 6 queues, nm_tx_tmr_us=3D5: 983.492185 main_thread [2639] 37.907 Mpps (37.945 Mpkts 18.196 Gbps in 1001= 000 usec) 512.00 avg_batch 99999 min_space cpu usage: 100% but with this patch, something is wrong when using 1 queue: 110.079117 main_thread [2639] 0.000 pps (0.000 pkts 0.000 bps in 1003920 us= ec) 0.00 avg_batch 99999 min_space 111.080184 main_thread [2639] 0.000 pps (0.000 pkts 0.000 bps in 1001066 us= ec) 0.00 avg_batch 99999 min_space 111.714181 sender_body [1663] poll error on queue 0: timeout 112.089179 main_thread [2639] 0.000 pps (0.000 pkts 0.000 bps in 1008996 us= ec) 0.00 avg_batch 99999 min_space 113.116178 main_thread [2639] 0.000 pps (0.000 pkts 0.000 bps in 1026999 us= ec) 0.00 avg_batch 99999 min_space (I've double checked by reverting with previous patch: no issue) same errors when using 6 queues and pkt-gen with 6 threads (-p 6) --=20 You are receiving this mail because: You are on the CC list for the bug.=