From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: Ubuntu Gutsy host / XP guest / -smp 2 Date: Sat, 05 Apr 2008 10:25:54 +0300 Message-ID: <47F72982.7060303@qumranet.com> References: <874pamfvk1.fsf@gutsy.luannocracy.com> <47F32CB9.8080404@qumranet.com> <87r6dl4mxw.fsf@gutsy.luannocracy.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel@lists.sourceforge.net To: David Abrahams Return-path: In-Reply-To: <87r6dl4mxw.fsf@gutsy.luannocracy.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces@lists.sourceforge.net Errors-To: kvm-devel-bounces@lists.sourceforge.net List-Id: kvm.vger.kernel.org David Abrahams wrote: > on Wed Apr 02 2008, Avi Kivity wrote: > > >> David Abrahams wrote: >> >>> With the title combination, the guest takes nearly 100% of my real CPU >>> time and still only sees one CPU. Is this a known problem, and does it >>> have a known solution? >>> >>> >>> >> Can you send the output of 'kvm_stat -1'? >> > > $ ./kvm_stat -1 > exits 5919444 74219 > halt_exits 1746937 59420 > invlpg 0 0 > io_exits 2181506 6569 > irq_exits 23055 335 > irq_window 2839 77 > mmio_exits 200851 0 > pf_fixed 1160592 6251 > pf_guest 43473 396 > request_irq 0 0 > signal_exits 24838 281 > tlb_flush 37381 1132 > > Versions of kvm producing this sort of output are common in archaeological digs. Please try a more recent release. >> What HAL do you see in device manager? >> > "Standard PC" > > This HAL does not support SMP. You need the "ACPI Multiprocessor PC" HAL or some such. Unless you have a recent Intel processor, the combination of SMP and Windows XP will give noticeably lower performance. I recommend sticking with uniprocessor in such cases. -- Any sufficiently difficult bug is indistinguishable from a feature. ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Register now and save $200. Hurry, offer ends at 11:59 p.m., Monday, April 7! Use priority code J8TLD2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone