On 02/20/2014 07:14 PM, Li Guang wrote:
Dr. David Alan Gilbert wrote:
* Michael R. Hines (mrhi...@linux.vnet.ibm.com) wrote:
On 02/19/2014 07:27 PM, Dr. David Alan Gilbert wrote:
I was just wondering if a separate 'max buffer size' knob would allow
you to more reasonably bound memory without setting policy; I don't
think
people like having potentially x2 memory.
Note: Checkpoint memory is not monotonic in this patchset (which
is unique to this implementation). Only if the guest actually dirties
100% of it's memory between one checkpoint to the next will
the host experience 2x memory usage for a short period of time.
Right, but that doesn't really help - if someone comes along and says
'How much memory do I need to be able to run an mc system?' the only
safe answer is 2x, otherwise we're adding a reason why the previously
stable guest might OOM.
so we may have to involve some disk operations
to handle memory exhaustion.
Thanks!
Like a cgroups memory limit, for example?
- Michael
