From nobody Mon Nov 13 14:36:29 2023 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 4STX724CWbz50wf7 for ; Mon, 13 Nov 2023 14:36:30 +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 4STX723Cnkz3M5Q for ; Mon, 13 Nov 2023 14:36:30 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1699886190; 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=88YLIl52ggRCf52TMMsdouNLn2N6ky9s2qj7345JAUE=; b=gJQkFcDsq2JKb52eXN4dtJz0j9zY+NOLfOupzAFxw3Fzy4EDjSUkEvsCpyGncWQNpFN7fy frhVkCU27uGJN6dRudc6hh/FFf/e5MSca1MgBqXE/Tb+WQWdwqBqWd5BSfzB9Oku7Qoh4F jBrmbRdmPMePb/UxdWBAIRL7ws+3NbDkyk24yp04hm5knYpbYZeaok2j70nG6WoRaGZH7o nuak2sJ5126vZmlVcYXnrhONMMDv+gpwX+d9yRbcQ393v4MzrSNIcK6I0W6ouU01Awx14e SpXSkh+kMWw+xmvgMFYSA8CsWhSJKn8niloJRxxNfS2oFW0FnYT/wYRCzJPxEw== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1699886190; a=rsa-sha256; cv=none; b=k34sOfGc3LCFmSzafKKhn6PgSZHanH2tDcjOVSqyHnBrsx6SMezp1+UmGa7oACzxb0Xaf8 GuUjfKNbtsuzlZxlwwgkKrl667BwD8x6BW3PM38AQjnM1m2/fvV9UPypT++G43YYlMmJGb AhuIBDF0GEW0tJoPVaUp6gXjgqJYKcx23GbJv7S7tfeOUISEAUnKo79D0p9801lYL7Pp1E 63VGSTxRhRXEi3fhv8A4ZrwWixkZHlKUkbB31T7PmWsXDWVoUfyxrB5jfB2TYPnNp6PVB7 SUc6qPIsP0zRjJ19G6vdSaUmSMIInW3IIEFJiIJShf07bx/5HQhyaSUPGaRJcQ== 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 4STX722JRSz17wG for ; Mon, 13 Nov 2023 14:36:30 +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 3ADEaUDm043086 for ; Mon, 13 Nov 2023 14:36:30 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 3ADEaUlq043085 for net@FreeBSD.org; Mon, 13 Nov 2023 14:36:30 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 274994] Regression of iperf3 network throughput tests with erms "rep movsb" copyto loops Date: Mon, 13 Nov 2023 14:36:29 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: regression X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: rscheff@freebsd.org X-Bugzilla-Status: Closed X-Bugzilla-Resolution: Not A Bug X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: net@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_status resolution 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 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=3D274994 Richard Scheffenegger changed: What |Removed |Added ---------------------------------------------------------------------------- Status|New |Closed Resolution|--- |Not A Bug --- Comment #3 from Richard Scheffenegger --- Seems like a number of anciliary changes in the kernel behavior (core selection, NUMA etc) cause these more modern x86_64 instructions to be suboptimal in the local code; testing with upstream kernel code does not sh= ow similar performance degradations. Closing this bug therefore as it needs to= be addressed locally by making sure these instructions live up to the expectations. --=20 You are receiving this mail because: You are the assignee for the bug.=