From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Davies Subject: Re: Windows slow boot: contractor wanted Date: Wed, 22 Aug 2012 15:41:50 +0100 Message-ID: <20120822144150.GA1400@alpha.arachsys.com> References: <20120816104727.GA17166@alpha.arachsys.com> <502CDC0D.9080004@redhat.com> <20120817123642.GA16736@alpha.arachsys.com> <5030F273.5080706@redhat.com> <20120820135656.GA16676@alpha.arachsys.com> <50334E13.8020100@redhat.com> <20120821152107.GA16363@alpha.arachsys.com> <5034A18B.5040408@redhat.com> <20120822124032.GA12647@alpha.arachsys.com> <5034D437.8070106@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, Rik van Riel To: Avi Kivity Return-path: Received: from alpha.arachsys.com ([91.203.57.7]:54635 "EHLO alpha.arachsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756491Ab2HVOly (ORCPT ); Wed, 22 Aug 2012 10:41:54 -0400 Content-Disposition: inline In-Reply-To: <5034D437.8070106@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: Avi Kivity wrote: > Richard Davies wrote: > > I can trigger the slow boots without KSM and they have the same profile, > > with _raw_spin_lock_irqsave and isolate_freepages_block at the top. > > > > I reduced to 3x 20GB 8-core VMs on a 128GB host (rather than 3x 40GB 8-core > > VMs), and haven't managed to get a really slow boot yet (>5 minutes). I'll > > post agan when I get one. > > I think you can go higher than that. But 120GB on a 128GB host is > pushing it. I've now triggered a very slow boot at 3x 36GB 8-core VMs on a 128GB host (i.e. 108GB on a 128GB host). It has the same profile with _raw_spin_lock_irqsave and isolate_freepages_block at the top. Richard. From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:46994) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1T4C82-00068F-S8 for qemu-devel@nongnu.org; Wed, 22 Aug 2012 10:41:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1T4C81-00060R-7X for qemu-devel@nongnu.org; Wed, 22 Aug 2012 10:41:54 -0400 Received: from alpha.arachsys.com ([91.203.57.7]:38594) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1T4C81-00060B-1k for qemu-devel@nongnu.org; Wed, 22 Aug 2012 10:41:53 -0400 Date: Wed, 22 Aug 2012 15:41:50 +0100 From: Richard Davies Message-ID: <20120822144150.GA1400@alpha.arachsys.com> References: <20120816104727.GA17166@alpha.arachsys.com> <502CDC0D.9080004@redhat.com> <20120817123642.GA16736@alpha.arachsys.com> <5030F273.5080706@redhat.com> <20120820135656.GA16676@alpha.arachsys.com> <50334E13.8020100@redhat.com> <20120821152107.GA16363@alpha.arachsys.com> <5034A18B.5040408@redhat.com> <20120822124032.GA12647@alpha.arachsys.com> <5034D437.8070106@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5034D437.8070106@redhat.com> Subject: Re: [Qemu-devel] Windows slow boot: contractor wanted List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Avi Kivity Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org Avi Kivity wrote: > Richard Davies wrote: > > I can trigger the slow boots without KSM and they have the same profile, > > with _raw_spin_lock_irqsave and isolate_freepages_block at the top. > > > > I reduced to 3x 20GB 8-core VMs on a 128GB host (rather than 3x 40GB 8-core > > VMs), and haven't managed to get a really slow boot yet (>5 minutes). I'll > > post agan when I get one. > > I think you can go higher than that. But 120GB on a 128GB host is > pushing it. I've now triggered a very slow boot at 3x 36GB 8-core VMs on a 128GB host (i.e. 108GB on a 128GB host). It has the same profile with _raw_spin_lock_irqsave and isolate_freepages_block at the top. Richard.