Messages in this thread | | | Date | Fri, 02 Mar 2007 15:28:43 -0800 | From | "Martin J. Bligh" <> | Subject | Re: The performance and behaviour of the anti-fragmentation related patches |
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>>> 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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