From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D222352F62 for ; Sun, 25 Aug 2024 07:29:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724570971; cv=none; b=hXEg7RYzTuwnrugjFVGMCQHFge2D86vHZXhuOO5khQ9hNJMPhvuaQpluxHQnmjwy2kmenMMSZq142L7m0QP5IVkBO+inV+UHAnynjVq/64URpq8rEgC2eLmRN9JVH3wE6FHNLV4F+dMtg01QiAOwYU7W2EL0pX1FDU0tmZwvQ78= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724570971; c=relaxed/simple; bh=S/+qsYk3Dv2lj5KouDjzQfz+Unvyq86oMrneEZCK0NY=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=PvT0iJwa4LK9eHP91l/O8lDvdG7hjCPMaUJJcTMNXrIFztiAyThj7GsxsQVtj0XK/oafnpekkKqCkbUA7F5WLaFcXCVIh2W+rG231Qq4V9kJWFkLCwzgruPqhnpJlZs0eVWmahRwpJqlM6tgez6smS74vsgHOmb4nlJuG+35WmI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=sPEdMIlY; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="sPEdMIlY" Received: by smtp.kernel.org (Postfix) with ESMTPS id 3D7DDC4AF19 for ; Sun, 25 Aug 2024 07:29:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1724570971; bh=S/+qsYk3Dv2lj5KouDjzQfz+Unvyq86oMrneEZCK0NY=; h=From:To:Subject:Date:In-Reply-To:References:From; b=sPEdMIlYVPw5mJ+0hqiA9vG9D/m6AB5oAM6FoZgaASNUyPCtvEF3Lz1p9OGAMkiXf +0sVVXkTEx75oAbBpp6TLMdgina/e7YZTGrQbZ7rdbNRuysp0wgIHu0qH7RLFDzBF5 4H4n8SEVC6aEulumeymKVE9SVz1xvdK6ajPbQJgrdElUlgbDnZPY0wVfKhjiPvhFvy 5Xji08mO/UPVQENWOGTFtse+kymyEThfGvUYAE6tPGDX6OvUInxueo2UTFfMfuyJVA RA8Atqtu3HZ+0f5HanjSyytighzVgfHBnqIsXgSc4r+XYZWWKwI9hqmbBZxYW0Lp27 i/57P6nTM3vBw== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 38F8FC53B7E; Sun, 25 Aug 2024 07:29:31 +0000 (UTC) From: bugzilla-daemon@kernel.org To: kvm@vger.kernel.org Subject: [Bug 199727] CPU freezes in KVM guests during high IO load on host Date: Sun, 25 Aug 2024 07:29:30 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo virtualization_kvm@kernel-bugs.osdl.org X-Bugzilla-Product: Virtualization X-Bugzilla-Component: kvm X-Bugzilla-Version: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: high X-Bugzilla-Who: info@binarus.de X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: virtualization_kvm@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D199727 Binarus (info@binarus.de) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |info@binarus.de --- Comment #25 from Binarus (info@binarus.de) --- I am by far not at a level that would allow me to really contribute somethi= ng useful to this discussion. However, we also suffer from this situation since several years, and I hope I may ask a few questions: First, as far as I have understood, the bug is in QEMU / KVM. Has it been f= ixed in the meantime? If yes, which QEMU and which Kernel / KVM version do we ne= ed to use to enjoy the fix? Second, we are normally using device virtio-blk-pci. But in the comments ab= ove, everybody uses device virtio-scsi-pci. If we already have cache=3Dnone, aio=3Dthreads and define and use iothread objects, do we still need to swit= ch from virtio-blk-pci to virtio-scsi-pci to circumvent the problem? Thanks a lot in advance! --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=