From mboxrd@z Thu Jan  1 00:00:00 1970
From: Richard Davies <richard@arachsys.com>
Subject: Re: Windows slow boot: contractor wanted
Date: Sat, 18 Aug 2012 15:44:02 +0100
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Cc: Avi Kivity <avi@redhat.com>, kvm@vger.kernel.org, qemu-devel@nongnu.org
To: Robert Vineyard <vineyard@tuffmail.com>
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Hi Robert,

Robert Vineyard wrote:
> Not sure if you've tried this, but I noticed massive performance
> gains (easily booting 2-3 times as fast) by converting from RAW disk
> images to direct-mapped raw partitions and making sure that IOMMU
> support was enabled in the BIOS and in the kernel at boot time.

Thanks for the suggestions, but unfortunately do we have IOMMU support
enabled, and in production (rather than this test case), we run from LVM
LVs, which are effectively direct raw partitions and still have this slow
boot problem.

Thanks anyway,

Richard.