Il 08/06/2013 22:53, Benjamin Herrenschmidt ha scritto:
On Sun, 2013-06-09 at 10:16 +0800, Wenchao Xia wrote:
If an page was not received and destination knows that page should
exist according to total size, fill it with zero at destination, would
it solve the problem?
The easiest way to
On Wed, 2013-06-12 at 10:00 -0400, Paolo Bonzini wrote:
The only bug we have is not a performance bug related to compression;
it's that writing zero pages breaks overcommit. Let's fix that, and
only that.
Right, do we have a way to madvise throw away these instead ? Or do we
have a way to
Il 12/06/2013 10:11, Benjamin Herrenschmidt ha scritto:
On Wed, 2013-06-12 at 10:00 -0400, Paolo Bonzini wrote:
The only bug we have is not a performance bug related to compression;
it's that writing zero pages breaks overcommit. Let's fix that, and
only that.
Right, do we have a way to
δΊ 2013-6-13 4:10, Paolo Bonzini ει:
Il 12/06/2013 10:11, Benjamin Herrenschmidt ha scritto:
On Wed, 2013-06-12 at 10:00 -0400, Paolo Bonzini wrote:
The only bug we have is not a performance bug related to compression;
it's that writing zero pages breaks overcommit. Let's fix that, and
only
On Mon, 2013-06-10 at 19:10 +1000, Alexey Kardashevskiy wrote:
I would prefer not to completely drop the patch since it saves bandwidth and
resources.
I would like migration to do what it should do - send pages no matter what,
this is exactly what migration is for. If there any many, many
On 10.06.2013 11:33, Benjamin Herrenschmidt wrote:
On Mon, 2013-06-10 at 19:10 +1000, Alexey Kardashevskiy wrote:
I would prefer not to completely drop the patch since it saves bandwidth and
resources.
I would like migration to do what it should do - send pages no matter what,
this is exactly
On Sun, 2013-06-09 at 12:34 +1000, Alexey Kardashevskiy wrote:
It is _live_ migration, the source sends changes, same pages can change and
be sent several times. So we would need to turn tracking on on the
destination to know if some page was received from the source or changed by
the
On Sun, 2013-06-09 at 10:16 +0800, Wenchao Xia wrote:
If an page was not received and destination knows that page should
exist according to total size, fill it with zero at destination, would
it solve the problem?
The easiest way to do that is to not write to those pages at the
destination
On 06/09/2013 12:52 PM, Benjamin Herrenschmidt wrote:
On Sun, 2013-06-09 at 12:34 +1000, Alexey Kardashevskiy wrote:
It is _live_ migration, the source sends changes, same pages can change and
be sent several times. So we would need to turn tracking on on the
destination to know if some page
