David Schultz <[EMAIL PROTECTED]> writes:
> While looking into a block size mismatch problem between
> Postgresql and FreeBSD's FFS, I noticed that postgresql is making
> some rather odd-sized requests to malloc(3): 0x2034, 0x2020,
> 0x4018, 0x8018, etc.

AFAICT the operative word there is "some" --- the heavily used paths
should make power-of-two requests to malloc, because aset block sizes
will normally be powers of two.  Can you put your finger on paths that
generate a significant number of non-power-of-two requests?

                        regards, tom lane

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