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[Qemu-devel] [PATCH v2 0/3] Event notifications for balloon driver
From: |
Daniel P. Berrange |
Subject: |
[Qemu-devel] [PATCH v2 0/3] Event notifications for balloon driver |
Date: |
Mon, 21 May 2012 17:59:50 +0100 |
This series is a followup to 2 previously posted patches
* BALLOON_CHANGE QMP event:
http://lists.nongnu.org/archive/html/qemu-devel/2012-05/msg02215.html
* query-events QMP command:
http://lists.nongnu.org/archive/html/qemu-devel/2012-05/msg02255.html
Changes since v1:
- Use a static array of strings for QMP event ID -> string conversion
- Add BALLOON_CHANGE to qmp-events.txt
There is also a new patch in this series, which introduces the ability
todo simple rate limiting of stateless monitor events. With the ballooning
of a 1.8 GB guest, down to 0.9 GB this reduced the number of events
emitted from ~50 down to just 4, spread across a 4 second time window.
It is important to note that events are only discarded when they are
obsoleted by a newer event. So an application is guarenteed to see the
final balloon event, with at worst a 1 second delay.
This series is being tested with a corresponding patch to libvirt
for handling balloon events
https://www.redhat.com/archives/libvir-list/2012-May/msg00868.html