Re: The performance and behaviour of the anti-fragmentation related patches

Martin J. Bligh
2007-03-02T23:28:46Z

>>> 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.