From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: Anthony Liguori <anthony-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
Cc: Marcelo Tosatti <marcelo-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org>,
kvm-devel
<kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>,
David Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>,
virtualization-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org
Subject: Re: [PATCH] KVM simplified virtio balloon driver
Date: Sat, 19 Jan 2008 09:05:52 +0200 [thread overview]
Message-ID: <4791A150.3030402@qumranet.com> (raw)
In-Reply-To: <478ED32A.1060803-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
Anthony Liguori wrote:
>>
>>
>>> It would be very useful too to write vb->num_pages into the config space
>>> whenever it was updated. This way, the host can easily keep track of
>>> where the guest is at in terms of ballooning.
>>>
>>>
>> OTOH it's currently pretty obvious (and usually fatal) if the guest has
>> trouble meeting the balloon requirements. A serious host needs a way of
>> detecting stress in the guest anyway, which this doesn't offer until it's too
>> late...
>>
>>
>
> The question I'm interested in answering though is not if but when. I
> would like to know when the guest has reached it's target.
>
>
Yes. We don't want to activate the RSS controller immediately; give the
guest some time to adjust voluntarily.
--
Any sufficiently difficult bug is indistinguishable from a feature.
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next prev parent reply other threads:[~2008-01-19 7:05 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-14 20:03 [PATCH] KVM virtio balloon driver Marcelo Tosatti
2008-01-14 21:29 ` Anthony Liguori
2008-01-15 14:22 ` Marcelo Tosatti
2008-01-14 23:32 ` Rusty Russell
2008-01-15 19:01 ` Marcelo Tosatti
2008-01-16 23:12 ` Dor Laor
2008-01-16 23:12 ` Dor Laor
[not found] ` <1200525166.26281.103.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2008-01-17 1:45 ` [PATCH] KVM simplified " Rusty Russell
2008-01-17 2:14 ` [kvm-devel] " Anthony Liguori
2008-01-17 9:32 ` Christian Borntraeger
[not found] ` <200801171245.59510.rusty-8n+1lVoiYb80n/F98K4Iww@public.gmane.org>
2008-01-17 2:14 ` Anthony Liguori
[not found] ` <478EBA22.30301-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2008-01-17 3:29 ` Rusty Russell
[not found] ` <200801171429.32888.rusty-8n+1lVoiYb80n/F98K4Iww@public.gmane.org>
2008-01-17 4:01 ` Anthony Liguori
[not found] ` <478ED32A.1060803-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2008-01-17 5:59 ` Rusty Russell
2008-01-19 7:05 ` Avi Kivity [this message]
2008-01-17 5:59 ` [kvm-devel] " Rusty Russell
2008-01-19 7:05 ` Avi Kivity
2008-01-17 4:01 ` Anthony Liguori
2008-01-17 3:29 ` Rusty Russell
2008-01-17 9:32 ` Christian Borntraeger
[not found] ` <200801171032.26198.borntraeger-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>
2008-01-17 10:25 ` Martin Schwidefsky
2008-01-17 11:40 ` Dor Laor
2008-01-17 13:56 ` Anthony Liguori
[not found] ` <478F5E85.9020009-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-01-17 23:01 ` Dor Laor
2008-01-17 23:35 ` Anthony Liguori
[not found] ` <1200610891.26281.171.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2008-01-17 23:35 ` Anthony Liguori
2008-01-17 23:01 ` Dor Laor
2008-01-17 11:40 ` Dor Laor
2008-01-17 10:25 ` Martin Schwidefsky
2008-01-19 7:02 ` Avi Kivity
2008-01-19 7:02 ` [kvm-devel] " Avi Kivity
[not found] ` <4791A085.8060502__30665.5007684187$1200726687$gmane$org-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-19 22:37 ` Anthony Liguori
[not found] ` <47927BB7.7060805-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2008-01-20 0:24 ` Marcelo Tosatti
2008-01-20 0:40 ` [kvm-devel] " Anthony Liguori
2008-01-20 0:40 ` Anthony Liguori
2008-01-24 1:58 ` [kvm-devel] " Rusty Russell
[not found] ` <47929884.2010908-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2008-01-24 1:58 ` Rusty Russell
2008-01-20 0:24 ` [kvm-devel] " Marcelo Tosatti
2008-01-19 22:37 ` Anthony Liguori
2008-01-19 22:37 ` Anthony Liguori
2008-01-17 1:45 ` Rusty Russell
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