From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1Kvzrv-0003Qa-Ce for qemu-devel@nongnu.org; Fri, 31 Oct 2008 15:41:15 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1Kvzrt-0003Py-Az for qemu-devel@nongnu.org; Fri, 31 Oct 2008 15:41:14 -0400 Received: from [199.232.76.173] (port=32913 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Kvzrt-0003Pq-5W for qemu-devel@nongnu.org; Fri, 31 Oct 2008 15:41:13 -0400 Received: from mail2.shareable.org ([80.68.89.115]:44302) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1Kvzrt-000851-5Q for qemu-devel@nongnu.org; Fri, 31 Oct 2008 15:41:13 -0400 Received: from jamie by mail2.shareable.org with local (Exim 4.63) (envelope-from ) id 1Kvzrn-0005FU-TL for qemu-devel@nongnu.org; Fri, 31 Oct 2008 19:41:07 +0000 Date: Fri, 31 Oct 2008 19:41:07 +0000 From: Jamie Lokier Subject: Re: [Qemu-devel] [5578] Increase default IO timeout from 10ms to 5s Message-ID: <20081031194105.GC16128@shareable.org> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Anthony Liguori wrote: > With this patch, I see the number of wake-ups with an idle dynamic > ticks guest drop from 80 per second to about 15 times per second. That's great, it really is, but shouldn't it be less than that? Did you look at the wakeup rate shown by powertop in the guest, to see how many extra wakeups are caused by QEMU internals? -- Jamie