don't call malloc_usable_size() so much

Description

Bradley K addresses this:
"In some situations, calls to malloc_usable_size() were taking significant CPU cycles. (Vadim measured 8% on a workload with a fanout of 128.) We can remember the usable size of the message buffers, saving those CPU cycles."

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George Lorch
July 12, 2015, 2:25 AM

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George Lorch

Reporter

George Lorch

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