From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nikola Ciprich Subject: [libvirt] libvirk KVM save (migrate) terribly slow Date: Thu, 10 Dec 2009 08:05:12 +0100 Message-ID: <20091210070512.GA6384@develbox.linuxbox.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: nikola.ciprich@linuxbox.cz To: KVM list , libvirt list Return-path: Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: libvir-list-bounces@redhat.com Errors-To: libvir-list-bounces@redhat.com List-Id: kvm.vger.kernel.org Hi, I noticed that using libvirt to save running domain is terribly slow, I mean it can take even 10 minutes to save VM with 2GB RAM, although the host is almost idle (8CPU, 16GB RAM). If I understand correctly, libvirt first pauses the vm and then migrates it to file (optionally through gzip). Restoring it back to running state is almost instant. I guess this is not what should be expected, is there something particular I should check? Thanks a lot in advance with best regards nik -- ------------------------------------- Nikola CIPRICH LinuxBox.cz, s.r.o. 28. rijna 168, 709 01 Ostrava tel.: +420 596 603 142 fax: +420 596 621 273 mobil: +420 777 093 799 www.linuxbox.cz mobil servis: +420 737 238 656 email servis: servis@linuxbox.cz -------------------------------------