Re: [Xen-devel] performance save/restore under xen-4.3.2 compared to kvm/qemu

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 25/08/14 13:35, Jan Beulich wrote:
>>>> On 25.08.14 at 14:23, <andrew.cooper3@xxxxxxxxxx> wrote:
>> I have also identified a bottleneck in the Linux PVOps kernel where the
>> mmap batch ioctl takes a batch size of 1024 and generates 1024 batch
>> hypercalls of batch size 1.  Fixing this will certainly make the
>> mapping/unmapping faster.
> Didn't Mats Petersson post a patch for this quite a while ago? Did
> this perhaps never get applied?
>
> Jan
>

That was a different issue if I remember correctly.  I think it was to
do with the classic kernel using ioremap() for foreign domain memory.

~Andrew

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel