From nobody Thu May 30 18:31:10 2024 X-Original-To: bugs@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 4Vqvvz0LxFz5L90b for ; Thu, 30 May 2024 18:31:11 +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 4Vqvvy6S76z4CZ7 for ; Thu, 30 May 2024 18:31:10 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1717093870; a=rsa-sha256; cv=none; b=gFDhqCne5eO7tj5k6VtpnIz5WPD/GIMOw6WI1X//YDmtQkLi6f6pmQpGU5+cHsGlp9aVHl b8iGyf5JEwUUnWRct6laC7GR1nOaiqJv6xt+X066zLyBg16xTwLhNje5PLGbuSE3wOUNjl habgbT7wW76j3lchsE8gYMCrwVDqdSw+5+ldyZ30fizKdpemIU71lw9/SUm2lXHlu5Ksux GTnrVcUkXg1+GNINiWwQ8pF6mA906jUul/QPRP+boCzIFXk+ivZLmqal0/QTlQ5DUOUXsU /IfLumRyF8rV0gak0y8mY6CWk0kjmKdw5O5CljdukOHPXROdlfvH38pX9nhf4Q== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1717093870; 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=y2zdIr8saC94SQ4rKj1bmku3HBeI37vOFI+3Apn1HVM=; b=QSXUDGtUCqnm48gsie65/Q/gEQFJqwg5Yv9wuJStrGmYhzzCrPjzj//7qIHogEpL+ZIb9N c/fdUbPX/9SxitCpHJB6t5V+pv0Q14qwmGOJRihpqWv+gCiPj1byeeRo5bOPwa4ZtoJ9LT /+MMascPofE6Da1j97AYnvqfvR1RhvsEhBolVi/VdzBvlCWY+NlN5MmwyQyq6sAR98REa1 i5j778DgVm1pTvzwH8+EIpz4gU59CoPcRUYzWwon+h2agpIn60o9ZnotLbqU/0XKYgLPLH sXDEMnnFaLDBprkvoceXaFxrytCRBbiZUCpG2aFMcBQZrncYS50Ax5KL4dCwow== 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 4Vqvvy64Ypzrrk for ; Thu, 30 May 2024 18:31:10 +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 44UIVAQi000319 for ; Thu, 30 May 2024 18:31:10 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 44UIVA8q000318 for bugs@FreeBSD.org; Thu, 30 May 2024 18:31:10 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 271826] FreeBSD is disastrously slow on a PowerMac G5, freezing at every command Date: Thu, 30 May 2024 18:31:10 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: misc X-Bugzilla-Version: 13.2-RELEASE X-Bugzilla-Keywords: needs-qa, performance X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: jhibbits@FreeBSD.org X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: 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: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D271826 --- Comment #27 from Justin Hibbits --- (In reply to Denis Ahrens from comment #26) Other big changes that are PPC970 relevant are in the pmap logic. If you t= ake a look at the git log of sys/powerpc/aim/mmu_oea64.c and sys/powerpc/aim/moea64_native.c, you can try to revert (git revert, or a spiritual revert if there are conflicts) some of them and see what impacts. Some options: e2d6c417 (superpages) a79540111 (micro-optimizations of PVO-PTE logic) bc94b7009 (re-merge ISA3 HPT with moea64 native HPT) -- this one *will* have conflicts. Another shot in the dark is e44ed9d34 (atomics) This is all just a guess based on trimming through `git diff origin/releng/12.4..origin/releng/13.1 sys/powerpc`. There may be other issues, but these are the first I see as possibilities. --=20 You are receiving this mail because: You are the assignee for the bug.=