From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kaspar Schiess Subject: SMP trouble with Solaris 10u8 as guest on Ubuntu Date: Fri, 11 Jun 2010 10:32:37 +0200 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit To: kvm@vger.kernel.org Return-path: Received: from lo.gmane.org ([80.91.229.12]:46625 "EHLO lo.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759752Ab0FKIzH (ORCPT ); Fri, 11 Jun 2010 04:55:07 -0400 Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1ON011-0006Ki-E8 for kvm@vger.kernel.org; Fri, 11 Jun 2010 10:55:03 +0200 Received: from kschiess-mac.geo.unizh.ch ([130.60.16.100]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 11 Jun 2010 10:55:03 +0200 Received: from eule by kschiess-mac.geo.unizh.ch with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 11 Jun 2010 10:55:03 +0200 Sender: kvm-owner@vger.kernel.org List-ID: Hi folks, We're running Solaris 10u8 64bit on Ubuntu/KVM. The Solaris guest feels sluggish when I assign it more than one VCPU. With a single VCPU things fly and everything works fine. By feels sluggish I mean: - occasional ssh freezes - slow typing - high system (spends its time doing kernel stuff) - Sometimes hangs while booting These symptoms ALL go away when I limit the VM to one VCPU. Here are the versions I can confirm this with: (from apt-show-versions | egrep "kvm|qemu") Host 1: kvm/lucid uptodate 1:84+dfsg-0ubuntu16+0.12.3+noroms+0ubuntu9 qemu-common/lucid uptodate 0.12.3+noroms-0ubuntu9 qemu-kvm/lucid uptodate 0.12.3+noroms-0ubuntu9 Host 2: kvm/karmic-updates uptodate 1:84+dfsg-0ubuntu16+0.11.0+0ubuntu6.3 qemu-kvm/karmic-updates uptodate 0.11.0-0ubuntu6.3 Old Bug? New Feature? Should I report this? Anyone seen this? Any suggestions? Thanks in advance, kaspar