From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefano Stabellini Subject: Re: [RFC][PATCH 12/13] Kemari: use signal to save qemu state for Kemari Date: Tue, 17 Mar 2009 18:35:22 +0000 Message-ID: <49BFED6A.3050805@eu.citrix.com> References: <49B0B8DC.5000606@lab.ntt.co.jp> <49B0C6FF.8090903@lab.ntt.co.jp> <49B10B8D.6090505@eu.citrix.com> <49B14D4B.7090300@lab.ntt.co.jp> <49BFE419.5080103@eu.citrix.com> <18879.59975.103026.803462@mariner.uk.xensource.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <18879.59975.103026.803462@mariner.uk.xensource.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Ian Jackson Cc: "ospk-vm@lab.ntt.co.jp" , Ian Pratt , xen-devel , Yoshiaki Tamura , Keir Fraser List-Id: xen-devel@lists.xenproject.org Ian Jackson wrote: > Stefano Stabellini writes ("Re: [Xen-devel] [RFC][PATCH 12/13] Kemari: use signal to save qemu state for Kemari"): >> I did a couple of quick tests and it seems that signals are faster then >> xenstore but still xenstore offers good performances. >> >> I measured the time using rdtsc at the sender size and at the receiver >> size, the difference between the two values is the following: >> >> signals: 368836 >> xenstore: 1984632 > > This is with an unloaded xenstored, I take it. Yes > What are these units ? > clock cycles