From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1JXrou-0003Wo-8A for qemu-devel@nongnu.org; Sat, 08 Mar 2008 00:42:08 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1JXrop-0003OC-3l for qemu-devel@nongnu.org; Sat, 08 Mar 2008 00:42:07 -0500 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1JXroo-0003Nv-Sp for qemu-devel@nongnu.org; Sat, 08 Mar 2008 00:42:02 -0500 Received: from wf-out-1314.google.com ([209.85.200.170]) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1JXroo-00061H-QM for qemu-devel@nongnu.org; Sat, 08 Mar 2008 00:42:02 -0500 Received: by wf-out-1314.google.com with SMTP id 28so861890wff.4 for ; Fri, 07 Mar 2008 21:42:00 -0800 (PST) Message-ID: Date: Sat, 8 Mar 2008 12:42:00 +0700 From: "Mulyadi Santosa" Subject: Re: [Qemu-devel] Slow clock in guest OS In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <8122F5B3F5384F6EB9822FC6673E6BA3@intranet> 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 Hi... On Fri, Mar 7, 2008 at 8:39 PM, Sergey Bychkov wrote: > I have found that slow clock was inspired by working UltraVNC server > installed in guest OS. > Possibly, often queries to video driver force qemu to "forget" to send clock > IRQs to guest. > At this time I didn't find more details about this problem, but stopping > UltraVNC service completely remove it. Hm...or somehow doing that make Qemu so busy and "forget" to process pending interrupts. Good detective work, IMHO. I suggest to write about it in Qemu FAQ. Care to submit a patch for qemu-doc? regards, Mulyadi.