FreeSpaceMapRewrite

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Performance testing

Raw speed

To measure the raw speed of just the FSM, I'm using a C user-defined function that just stresses the FSM by doing random FSM requests.

The results are quite interesting:

0.3MB 3.3MB 33MB 326MB 3255MB
CVS HEAD 2652 1763 1078 413 77 7.9
patched 133 356 421 420 339 468

Here's the script used for this test fsmtest-20080822.tgz

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