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[20060428] Overhead of vnd(4) as disk device in Xen
When you run a Xen domU, the question is what to use as a harddisk to run the operating system from. Options are a dedicated harddisk partition, or using a vnd(4) disk-image. While disk-images are a lot more flexible the manage than partitions, there's a drawback because access to anything on the image goes through the dom0's filesystem, and is thus slower.

How much slower exactly using a disk image instead of a raw partition is was asked on tech-perform, and Greg Troxel gave some interesting numbers.

Now what I wonder is what impact the filesystem type has...

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