From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH 00/18] KVM: PPC: Virtualize Gekko guests Date: Tue, 09 Feb 2010 13:06:27 +0200 Message-ID: <4B7141B3.8000309@redhat.com> References: <1265298925-31954-1-git-send-email-agraf@suse.de> <4B6EB7F6.10304@redhat.com> <4B6EE8B2.80009@redhat.com> <4B6F3890.8090401@suse.de> <4B6FD118.2090207@redhat.com> <4B714049.7010201@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: "kvm-ppc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" To: Alexander Graf Return-path: In-Reply-To: <4B714049.7010201-l3A5Bk7waGM@public.gmane.org> Sender: kvm-ppc-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: kvm.vger.kernel.org On 02/09/2010 01:00 PM, Alexander Graf wrote: > >> That's pretty impressive (never saw x86 with this exit rate) but it's >> more than 1000 times slower than the hardware, assuming 1 fpu IPC (and >> the processor can probably do more). An fpu intensive application >> will slow to a crawl. >> > Measuring a typical Gekko application, I get about 200k-250k of fpu > (incl. paired singles) instructions per second. > Virtualized, yes? What's the rate on bare metal? -- error compiling committee.c: too many arguments to function