[libvirt] [PATCH 8/8] Allow balloon driver collection to be adjusted dynamically

Daniel P. Berrange berrange at redhat.com
Wed Jul 3 11:09:08 UTC 2013


On Tue, Jul 02, 2013 at 09:39:26AM -0400, John Ferlan wrote:
> Extend the virDomainSetMemeoryFlags() to accept a 'VIR_DOMAIN_MEM_PERIOD'
> which will be used to dynamically set the collection period for the balloon
> driver via a 'virsh dommemstat <domain> --period <value>' command.  Add
> the --current, --live, & --config options to dommemstat.

While what you've done here works from a technical POV, I'm not a
fan of overloading the semantics of the API using a flag. Tuning
memory stat collection period has no semantic overlap with tuning
of memory limits.  So I'm inclined to say that we should have a
new dedicated API for tuning the memory stats period.

Regards,
Daniel
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