From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Ahern Subject: Re: Tracing kvm: kvm_entry and kvm_exit Date: Sun, 03 Mar 2013 22:40:20 -0700 Message-ID: <513433C4.7040104@gmail.com> References: <1361550867.51279e13338a7@www.imp.polymtl.ca> <20130225101804.GC2790@stefanha-thinkpad.redhat.com> <512E36B2.5090100@gmail.com> <512EE1D4.6080808@gmail.com> <1362375371.513432cbdb150@www.imp.polymtl.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Stefan Hajnoczi , kvm@vger.kernel.org, linux-perf-users@vger.kernel.org To: Mohamad Gebai Return-path: In-Reply-To: <1362375371.513432cbdb150@www.imp.polymtl.ca> Sender: linux-perf-users-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On 3/3/13 10:36 PM, Mohamad Gebai wrote: > Thank you for this, I have been testing it for the last couple of days, I can > see that perf kvm is getting more stable. Though I just realized that if you > launch perf kvm as soon as you start a VM, the VM fails to boot. Any idea why > this happens? > no, but tell me more and I'll see if I can reproduce. host kernel version? guest kernel? qemu-kvm command line? (leave out the disk and network arguments -- just the rest) sequence of events? launching qemu-kvm in one window and at the "same time" launching perf-kvm? Or is perf-kvm started a few seconds prior to qemu-kvm or vice-versa?