From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1KS5xv-0003MK-G1 for qemu-devel@nongnu.org; Sun, 10 Aug 2008 04:07:51 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1KS5xu-0003M7-04 for qemu-devel@nongnu.org; Sun, 10 Aug 2008 04:07:51 -0400 Received: from [199.232.76.173] (port=34071 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KS5xt-0003M4-QC for qemu-devel@nongnu.org; Sun, 10 Aug 2008 04:07:49 -0400 Received: from wf-out-1314.google.com ([209.85.200.171]:23487) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1KS5xt-00083h-FW for qemu-devel@nongnu.org; Sun, 10 Aug 2008 04:07:49 -0400 Received: by wf-out-1314.google.com with SMTP id 27so2969240wfd.4 for ; Sun, 10 Aug 2008 01:07:48 -0700 (PDT) Message-ID: <478c82f00808100107v3545b8fay3cad589669d241fa@mail.gmail.com> Date: Sun, 10 Aug 2008 11:07:48 +0300 From: "Alexander (Sasha) Sirotkin" Subject: Re: [Qemu-devel] kqemu "acceleration" slows qemu down In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <478c82f00808091605y4d401ad6h7d8f537afa8f8924@mail.gmail.com> 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 On Sun, Aug 10, 2008 at 8:18 AM, Mulyadi Santosa wrote: > On Sun, Aug 10, 2008 at 6:05 AM, Alexander (Sasha) Sirotkin > wrote: >> Linux host, WinXP guest. With kqemu acceleration enabled it runs >> significantly slower, not faster as one would expect. /dev/shm is >> mounted. max-user-freq set to 1024. >> >> Any ideas ? > > Many possibilities here..... what kind of applications do you run > inside the Windows guest? > > essentially, kqemu helps if there aren't many traps which results into > code translation or guest+host are using same data bus width (not sure > if it's the correct term, i.e 32 bit guest on 32 bit host...). > > see kqemu documents about technical limitation and assumption on codes > that can be executed directly by kqemu. No applications, just windows boot. > > > regards, > > Mulyadi. > > >