Re: The performance and behaviour of the anti-fragmentation relatedpatches

[Martin J. Bligh]

> > > 32GB is pretty much the minimum size to reproduce some of these
> > > problems. Some workloads may need larger systems to easily trigger
> > > them.
> >
> > We can find a 32GB system here pretty easily to test things on if
> > need be.  Setting up large commercial databases is much harder.
>
> That's my problem, too.
>
> There does not seem to exist any single set of test cases that
> accurately predicts how the VM will behave with customer
> workloads.

Tracing might help? Showing Andrew traces of what happened in
production for the prev_priority change made it much easier to
demonstrate and explain the real problem ...

M.


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