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Type: Task
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Resolution: Done
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Affects Version/s: None
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Component/s: None
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None
@michaelcahill:
Increase the pre-alloc of WT_EXT/WT_SIZE structures from 5/2 to 5/5 in the write/free paths, and from 100/10 to 250/250 in the checkpoint path.
Turn off cache limits: checkpoints can take tens of thousands of WT_EXT structures and hundreds of WT_SIZE structures, we want to cache everything until the checkpoint completes. Add a cleanup call after the checkpoint so we don't tie down megabytes of memory between checkpoints.
Split the previous pre-allocate function into two parts, it's simpler as a function to pre-allocate entries and a separate function to take an entry for use.
Remove the tracking of "memory allocations while locked"; there are extent lists we read while not holding any locks, and they can be really, really large requiring the allocation of tens of thousands of WT_EXT structures, they make the statistic meaningless.