Clojurians Log v2

hi all, I’m profiling some code in a tight loop, it seems that I’m creating alot of maps. Any advice on perf optimizations? I thought about either using records or volatile-mutable

have you tried transients?

that was my idea too => see https://clojure.org/reference/transients

or perhaps you can get rid of excessive objects creation by changing your algorithm / using different data structures.

Tried transients, it gives a small improv but the very best is volatible mutable

records dont give alot of improvement

@mping Have you also confirmed there is no reflection or boxing/unboxing?

@seancorfield yep, that fixed it quite a bit

we use destructuring alot , so we end up passing maps around to supply fn arguments

according to my completely unscientific benchmark, defrecord is just a bit better than plain maps

records wouldn't actually help here - they are just maps with more methods on them

also destructuring is more expensive than just using maps, I'd never destructure in a tight loop

i thought records did provide better performance than a plain map

oh, for the defined fields, yes, thanks for the reminder