Re: [Xen-devel] xen 4.3 test report

[Vasiliy Tolstov <v.tolstov@xxxxxxxxx>]

2013/5/24 Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>:
> I've noticed on Xen 4.1 (and Xen 4.3) that if I use a 32-bit dom0 and
> local migrated any 32/64 PV/PVHVM (so four variations) guest it is incredibly 
> slow.
>
> (So xm save <..> in an iSCSI disk && xm restore ...)
>
> The 'perf report' shows that dom0 spends most of its time in xen_version
> (which is the yield type call).
>
> If the same operation is done, but dom0 is a 64-bit, it is quick.
>
> And I think this is the issue that Ian's Jackson nighlty test-system is
> running in-to - which is that the migration is sooo slow that it times out.
> (This is with real-linux).
>
> Now the oddity is that this I saw this with Xen 4.1, but Vasiliy says he 
> didn't see
> this with Xen 4.1 - so perhaps the issue I am seeing is different.
>
> Hm, I should re-run this test once more with xen 4.3 just to confirm.


I'm didnt see this slowdown may be because i'm use 4.1.3 from opensuse
which have backported some patches and forward ported another patches
from suse....




--
Vasiliy Tolstov,
e-mail: v.tolstov@xxxxxxxxx
jabber: vase@xxxxxxxxx

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