From owner-freebsd-bugs@freebsd.org Mon May 3 16:02:50 2021 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 7D6E4635FCA for ; Mon, 3 May 2021 16:02:50 +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 4FYnn62ys0z3CYY for ; Mon, 3 May 2021 16:02:50 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 65CE7635FC9; Mon, 3 May 2021 16:02:50 +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 65993635E44 for ; Mon, 3 May 2021 16:02:50 +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 "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4FYnn62QX8z3CQ8 for ; Mon, 3 May 2021 16:02:50 +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 46480210A2 for ; Mon, 3 May 2021 16:02:50 +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 143G2o2P074665 for ; Mon, 3 May 2021 16:02:50 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 143G2o6a074664 for bugs@FreeBSD.org; Mon, 3 May 2021 16:02:50 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: bugs@FreeBSD.org Subject: [Bug 255571] vmx mtu 9000 performance issues Date: Mon, 03 May 2021 16:02:50 +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: 12.2-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: jcaplan@blackberry.com 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 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: 2.1.34 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 03 May 2021 16:02:50 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D255571 Bug ID: 255571 Summary: vmx mtu 9000 performance issues Product: Base System Version: 12.2-STABLE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: jcaplan@blackberry.com Overview -------- Setting mtu=3D9000 for a vmx interface on vmware VM and running iperf2, performance goes down to 272 kb/s from 943 Mb/s with default 1500 mtu. Steps to Reproduce ------------------ 1) On host, change interface to 9000 # ifconfig vmnet20 mtu 9000 2) On target do the same: root@freebsd: # ifconfig vmx0 mtu 9000 3) Run iperf root@freebsd: # iperf -s Actual Results -------------- On freebsd target: # ./src/iperf -s ------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 64.0 KByte (default) ------------------------------------------------------------ (null)local 172.16.129.205 port 5001 connected with 172.16.129.1 port 34798 On host: iperf -c 172.16.129.205 ------------------------------------------------------------ Client connecting to 172.16.129.205, TCP port 5001 TCP window size: 325 KByte (default) ------------------------------------------------------------ [ 3] local 172.16.129.1 port 34798 connected with 172.16.129.205 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.1 sec 335 KBytes 272 Kbits/sec Expected Results ---------------- iperf shouldn't hang on target and performance should be similar to 1500 mtu case. Build Date & Hardware: ---------------------- FreeBSD freebsd 12.2-RELEASE FreeBSD 12.2-RELEASE r366954 GENERIC amd64 --=20 You are receiving this mail because: You are the assignee for the bug.=