From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gleb Natapov Subject: Re: Elvis upstreaming plan Date: Wed, 27 Nov 2013 09:35:01 +0200 Message-ID: <20131127073501.GN959@redhat.com> References: <52955DB0.6010702@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Razya Ladelsky , kvm@vger.kernel.org, anthony@codemonkey.ws, "Michael S. Tsirkin" , pbonzini@redhat.com, asias@redhat.com, digitaleric@google.com, abel.gordon@gmail.com, Abel Gordon , Eran Raichstein , Joel Nider , bsd@redhat.com To: Jason Wang Return-path: Received: from mx1.redhat.com ([209.132.183.28]:45220 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750986Ab3K0HfK (ORCPT ); Wed, 27 Nov 2013 02:35:10 -0500 Content-Disposition: inline In-Reply-To: <52955DB0.6010702@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On Wed, Nov 27, 2013 at 10:49:20AM +0800, Jason Wang wrote: > > 4. vhost statistics > > This patch introduces a set of statistics to monitor different performance > > metrics of vhost and our polling and I/O scheduling mechanisms. The > > statistics are exposed using debugfs and can be easily displayed with a > > Python script (vhost_stat, based on the old kvm_stats) > > https://github.com/abelg/virtual_io_acceleration/commit/ac14206ea56939ecc3608dc5f978b86fa322e7b0 > > How about using trace points instead? Besides statistics, it can also > help more in debugging. Definitely. kvm_stats has moved to ftrace long time ago. -- Gleb.