Re: GETF Speedup?

"Michał "phoe" Herda (as phoe at disroot dot org)" <[email protected]>
Newsgroups gmane.lisp.lispworks.general
Message-ID <[email protected]> 
W dniu 2025-10-11 16:07, David McClain (as dbm at refined-audiometrics 
dot com) napisał(a):

> (lst  (mapcan 'list keys vals))

Are you sure you are not measuring cache locality? MAPCAN #'LIST may 
effectively allocate conses of the whole plist next to one another in 
memory, where a CPU may recognize that it can optimize away pointer 
traversal and random memory access.

I'd rather go for a benchmark where the conses are shuffled across the 
whole memory, with some GCs in between for a good measure.
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