Date: Wed, 22 Oct 2025 14:55:59 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 259249] vtnet: Checksum offloading enabled reduces pf NAT performance (~100mbps -> ~200kbps) Message-ID: <bug-259249-7501-Q9fE3zuMeJ@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-259249-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-259249-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259249 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 and here clear degradation of download for 14.3p4 with offloading if compare with 14-stable or no offloading ~26 Mbps vs ~800 Mbps normally FreeBSD Offloading Download (CV%) delta % Upload (CV%) delta % 14.3p4 yes 26 19.96% 445 19.96% 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 14.3p4 yes 2 18 769 14.3p4 yes 3 20 315 14.3p4 yes 4 28 540 14.3p4 yes 5 33 495 14.3p4 yes 6 27 356 14.3p4 yes 7 32 421 14.3p4 yes 8 22 325 14.3p4 yes 9 28 451 14.3p4 yes 10 27 728 14.3p4 yes avg 26 445 CV% 19.96% 46.73% 14.3p4 no 1 932 686 14.3p4 no 2 749 433 14.3p4 no 3 854 441 14.3p4 no 4 885 624 14.3p4 no 5 946 760 14.3p4 no 6 284 211 14.3p4 no 7 916 754 14.3p4 no 8 863 462 14.3p4 no 9 883 416 14.3p4 no 10 816 496 14.3p4 no avg 813 528 CV% 23.93% 33.02% 14-087fc6ae0a8c yes 1 87 510 14-087fc6ae0a8c yes 2 537 763 14-087fc6ae0a8c yes 3 884 576 14-087fc6ae0a8c yes 4 714 414 14-087fc6ae0a8c yes 5 379 392 14-087fc6ae0a8c yes 6 724 441 14-087fc6ae0a8c yes 7 259 563 14-087fc6ae0a8c yes 8 758 474 14-087fc6ae0a8c yes 9 60 48 14-087fc6ae0a8c yes 10 484 128 14-087fc6ae0a8c yes avg 489 431 CV% 58.95% 48.74% 14-087fc6ae0a8c no 1 964 541 14-087fc6ae0a8c no 2 943 410 14-087fc6ae0a8c no 3 980 478 14-087fc6ae0a8c no 4 981 761 14-087fc6ae0a8c no 5 861 757 14-087fc6ae0a8c no 6 874 537 14-087fc6ae0a8c no 7 765 471 14-087fc6ae0a8c no 8 596 510 14-087fc6ae0a8c no 9 327 511 14-087fc6ae0a8c no 10 328 728 14-087fc6ae0a8c no avg 762 570 CV% 33.78% 22.59% -- You are receiving this mail because: You are the assignee for the bug. You are on the CC list for the bug.
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