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| author |   Adam Litke <agl@us.ibm.com> | 2010-01-26 14:17:35 -0600 |
|---|---|---|
| committer |   Anthony Liguori <aliguori@us.ibm.com> | 2010-01-26 17:08:03 -0600 |
| commit | 625a5befc2e3200b396594f002218d235e375da5 (patch) | |
| tree | 89b9362c879d319b5061424035e3dbead9555e70 /qemu-doc.texi | |
| parent | New API for asynchronous monitor commands (diff) | |
| download | qemu-kvm-625a5befc2e3200b396594f002218d235e375da5.tar.gz qemu-kvm-625a5befc2e3200b396594f002218d235e375da5.tar.bz2 qemu-kvm-625a5befc2e3200b396594f002218d235e375da5.zip | |
virtio: Add memory statistics reporting to the balloon driver
When using ballooning to manage overcommitted memory on a host, a system for
guests to communicate their memory usage to the host can provide information
that will minimize the impact of ballooning on the guests. The current method
employs a daemon running in each guest that communicates memory statistics to a
host daemon at a specified time interval. The host daemon aggregates this
information and inflates and/or deflates balloons according to the level of
host memory pressure. This approach is effective but overly complex since a
daemon must be installed inside each guest and coordinated to communicate with
the host. A simpler approach is to collect memory statistics in the virtio
balloon driver and communicate them directly to the hypervisor.
Signed-off-by: Adam Litke <agl@us.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'qemu-doc.texi')
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