Re: [Qemu-devel] [PATCH v2 00/12] qcow2: Add new overlap check functions

[Stefan Hajnoczi]

On Mon, Nov 24, 2014 at 04:56:48PM +0100, Max Reitz wrote:
> * CPU usage at runtime decreased by 150 to 275 percent on
>   overlap-check-heavy tasks
> * No additional performance problems at loading time (in theory has the
>   same runtime complexity as a single overlap check right now; in
>   practice I could not find any problems)
> * Decent RAM usage (40 kB for a 1 TB image with 64 kB clusters; 40 MB
>   for a 1 PB image etc. pp.)

RAM usage seems fine and the CPU reduction is very nice.

I will review the individual patches for QEMU 2.3.  If there is demand
it can be added to the QEMU 2.2 -stable branch at a later date.

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