From nobody Mon Jul 14 12:40:24 2025 X-Original-To: net@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4bghk56xQfz61j5T for ; Mon, 14 Jul 2025 12:40:29 +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 "R10" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4bghk54VcJz41h3 for ; Mon, 14 Jul 2025 12:40:29 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1752496829; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jvakv0mwHE2gr4NGF2HIiuDD78tJoVZKTyKK93hBWkQ=; b=T7oeJtJ6U7G6ySNwOOrBpVFQ1n7GQeyomQrJvaDfI3vwTyXmucgXYEGQ2rI0lawuXLsFty P2mpQzXjavLGn/H99ahpixBbaiZ8m+EUVkQ2/NGQ1bULBDl75dgMmWA9Yx/RyK0COZD6hS ZPrcoQ+ITWxvAY4e3QE9w9JJtozFKhigM3u2h/dkpPJsOlnAOoBLKAK7LuL8x9+0Y3uaJ1 r43dY1Suw/dvT4aMpCdaLCM6thdGBaE+P0bp+yfdihArw+CbX5Xsg+cwDNBDYYUokl7Tig WGgqMK+LiJpB3GeEkDNfHb99W9Fq314SmRjlv74JCEIUmG5H2AdPzQAnlE/eog== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1752496829; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jvakv0mwHE2gr4NGF2HIiuDD78tJoVZKTyKK93hBWkQ=; b=l1rja8U9iBOCYGaEHiPODQFij0FCaXCfJOi3joQY4XN1aZ76pGDEITEfvJ7jviriTf99bN EzKzp2LjyQ04J7WgJGYYS3lEUBhCR4rn2iiYF20WfZitZU6Gq1di4bdWP9i4tFRj9bJCd2 /VtxGbLXGCY+gByu3z0oFRLYqptNRkHeLbdKf//o9Iop/vSuIZXVunnlUSgHXmwdq7qg5q fl54RHrP+UAN4cbbjOvsm+IFZ/z3I6bkG6lA7RyF99X4PnHiKnUCFAE97Gmi0xvQObrz6P vQcpRY4iE7zf3U1pxhkUbAr9jUGOWmawr0AdADxc7fIuQRUKv2KQPgyfNHvTWA== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1752496829; a=rsa-sha256; cv=none; b=tIO8AnkXP3xgr3duCvcvdtZEc6e1JlMumHKuo1mBmPww5GL12MJyUg9ip5tmMYk/JxDmHs h0+oiZ5VMAxaR4LvZdxi/g9qRXWwThq2SMtYqDUq55o2qpakmoYklx4uyr/5slCYEL14FA uQ2eGgyL8VoczSDXgLjKqgbfidQ8Bh1Q2tW/GjEmtsR/4wh92Sxv5eet87RDsIeXx34Os3 wEN1vSokXKpY8mhrNPOvPewdAyJu/iMNKlPi+YtKMaYXllM5l1bn9sh0nJEme20oGUjfAe KikG6bo1WoFUpCN7y7XoolPOdqRDiK74qLUWNXBJwG33oR/3ImTak6ZEavkHLg== 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 4bghk53jNfztkD for ; Mon, 14 Jul 2025 12:40:29 +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 56ECeTol026374 for ; Mon, 14 Jul 2025 12:40:29 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 56ECeTSY026373 for net@FreeBSD.org; Mon, 14 Jul 2025 12:40:29 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 165059] vtnet(4): Networking breaks with a router using virtio net driver on KVM host Date: Mon, 14 Jul 2025 12:40:24 +0000 X-Bugzilla-Reason: CC AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 9.0-RELEASE X-Bugzilla-Keywords: needs-qa X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: void@f-m.fm X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: net@FreeBSD.org X-Bugzilla-Flags: maintainer-feedback? X-Bugzilla-Changed-Fields: 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=3D165059 --- Comment #44 from void@f-m.fm --- (In reply to Mark Linimon from comment #42) In terms of iperf3, i.e. throughput, it's not really a workaround. Setting hw.vtnet.tso_disable=3D"1" hw.vtnet.lro_disable=3D"1" hw.vtnet.csum_disable=3D"1" in the freebsd guest increases throughput by 5-20% but it's never linespeed= for *any* version of freebsd guest. It *is* near linespeed for linux guests. The context here is freebsd host. --=20 You are receiving this mail because: You are on the CC list for the bug. You are the assignee for the bug.=