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Wed, 22 Oct 2025 14:55:59 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 59MEtxa1033945 for net@FreeBSD.org; Wed, 22 Oct 2025 14:55:59 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 259249] vtnet: Checksum offloading enabled reduces pf NAT performance (~100mbps -> ~200kbps) Date: Wed, 22 Oct 2025 14:55:59 +0000 X-Bugzilla-Reason: AssignedTo CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 13.0-RELEASE X-Bugzilla-Keywords: needs-qa, performance X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: vova@fbsd.ru X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: net@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D259249 vova@fbsd.ru changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |vova@fbsd.ru --- Comment #4 from vova@fbsd.ru --- As fast as as I have testing stand (see #276760), I've re-measured in NATed jail=20 and here clear degradation of download for 14.3p4 with offloading if compare with=20 14-stable or no offloading=20 ~26 Mbps vs ~800 Mbps normally FreeBSD Offloading Download (CV%) delta % Upload (CV%) del= ta % 14.3p4 yes 26 19.96% 445 19.96%=20=20 14.3p4 no 813 23.93% 3079% 528 23.93% 19% 14-087fc6ae0a8c yes 489 58.95% -40% 431 58.95% -18% 14-087fc6ae0a8c no 762 33.78% 56% 570 33.78% 32% raw data: FreeBSD Offloading Try Download Upload 14.3p4 yes 1 21 54=20 14.3p4 yes 2 18 769=20 14.3p4 yes 3 20 315=20 14.3p4 yes 4 28 540=20 14.3p4 yes 5 33 495=20 14.3p4 yes 6 27 356=20 14.3p4 yes 7 32 421=20 14.3p4 yes 8 22 325=20 14.3p4 yes 9 28 451=20 14.3p4 yes 10 27 728=20 14.3p4 yes avg 26 445=20 CV% 19.96% 46.73% 14.3p4 no 1 932 686=20 14.3p4 no 2 749 433=20 14.3p4 no 3 854 441=20 14.3p4 no 4 885 624=20 14.3p4 no 5 946 760=20 14.3p4 no 6 284 211=20 14.3p4 no 7 916 754=20 14.3p4 no 8 863 462=20 14.3p4 no 9 883 416=20 14.3p4 no 10 816 496=20 14.3p4 no avg 813 528=20 CV% 23.93% 33.02% 14-087fc6ae0a8c yes 1 87 510=20 14-087fc6ae0a8c yes 2 537 763=20 14-087fc6ae0a8c yes 3 884 576=20 14-087fc6ae0a8c yes 4 714 414=20 14-087fc6ae0a8c yes 5 379 392=20 14-087fc6ae0a8c yes 6 724 441=20 14-087fc6ae0a8c yes 7 259 563=20 14-087fc6ae0a8c yes 8 758 474=20 14-087fc6ae0a8c yes 9 60 48=20 14-087fc6ae0a8c yes 10 484 128=20 14-087fc6ae0a8c yes avg 489 431=20 CV% 58.95% 48.74% 14-087fc6ae0a8c no 1 964 541=20 14-087fc6ae0a8c no 2 943 410=20 14-087fc6ae0a8c no 3 980 478=20 14-087fc6ae0a8c no 4 981 761=20 14-087fc6ae0a8c no 5 861 757=20 14-087fc6ae0a8c no 6 874 537=20 14-087fc6ae0a8c no 7 765 471=20 14-087fc6ae0a8c no 8 596 510=20 14-087fc6ae0a8c no 9 327 511=20 14-087fc6ae0a8c no 10 328 728=20 14-087fc6ae0a8c no avg 762 570=20 CV% 33.78% 22.59% --=20 You are receiving this mail because: You are the assignee for the bug. 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