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 F308E5D474 for ; Thu, 1 Feb 2024 13:51:04 +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=1706795465; cv=none; b=lQSwqJf45jPYHXHjjd3HRo25kheve045P6BoppEr0ftnvMHk0RyeEJNDNpUO03eZK5L/pzrTbSsTljfGlB7ORxR1PMElndoi8Hq8/tNfab140UyLBxf6M7aj/UG5sHBuXyyYIIyDGQVCk8aZmpEd4c17Jj8nch9snZp1OWn4uSY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706795465; c=relaxed/simple; bh=v/Ou3niPEfbcvn5BHjAVtFCTt1ddhpLsUW2SrXKSj/s=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=dnDtKpYIjkqVHcz2H4P71N3nmv9hPhQAkQEAzmHxw3XG3PkWZ/JB6Jubs8x/ptsZ3ZYDXMC4TbRU93jeHlwTgdKJPCrXzc+hvaRLXtJzAETI2CUWY/EQjv9hv1JtPLkWssDGvGdlveBWoaUhR5a447zEsVxEBHrEqgeUGVgYBFE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ORYm901G; 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="ORYm901G" Received: by smtp.kernel.org (Postfix) with ESMTPS id 81EA9C433F1 for ; Thu, 1 Feb 2024 13:51:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706795464; bh=v/Ou3niPEfbcvn5BHjAVtFCTt1ddhpLsUW2SrXKSj/s=; h=From:To:Subject:Date:In-Reply-To:References:From; b=ORYm901Gw9TOvUFC7U3VGDv83+wZJBvt4rfXDSGw0UlTDH52Ku74JNXbBOo4oxl+l yeNYC6narD5CJNzzCewTR3hcqfyj4GSfbv5mw8dWu5TZtzHVmcgDt9cGB3nXixZdLT /JVpnmtNYEITaEDGLT0NjuJ8mQdWUpRX/JCd+iQm3+TZfP83bACSc4G5ke8R+H8B9R hBt3PqdRRR362BjtYz8p4QXAssIopd68MhR9SsbWJF/9NbJu5gMnFhpQTGnrfnmK+3 s7LC8JflvMKXUGz6OlIifABJi+QWdtxuyPw5jlNYNZ8Wq5VadR52NWgjiMJa/TUsbv HMb7u9m0xVRhw== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 724A8C53BC6; Thu, 1 Feb 2024 13:51:04 +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: Thu, 01 Feb 2024 13:51:03 +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: mgabriel@inett.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: 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 --- Comment #23 from Marco Gabriel (mgabriel@inett.de) --- (In reply to Roland Kletzing from comment #13) > hello, thanks - aio=3Dio_uring is no better, the only real way to get to a > stable system is virtio-scsi-single/iothreads=3D1/aio=3Dthreads >=20 > the question is why aio=3Dnative and io_uring has issues and threads has = not... Just for reference: Using aio=3Dthreads doesn't help on our lab and customer setups (Proxmox/Ceph HCI) - we still see vm freezes after several minutes w= hen I/O load is high. --=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.=