Re: [Xen-devel] [PATCH v3] tools/libxc: Batch memory allocations for PV guests

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Mon, Jun 15, 2015 at 11:12:07AM +0100, Ross Lagerwall wrote:
> The current code for allocating memory for PV guests batches the
> hypercalls to allocate memory by allocating 1024*1024 extents of order 0
> at a time. To make this faster, first try allocating extents of order 9
> (2 MiB) before falling back to the order 0 allocating if the order 9
> allocation fails.
> 
> On my test machine this reduced the time to start a 128 GiB PV guest by
> about 60 seconds.
> 
> Signed-off-by: Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>

Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>

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