The unique package itself has a few benchmarks 
<https://cs.opensource.google/go/go/+/master:src/unique/handle_bench_test.go;l=1;drc=a088e230d4e7892b15851babe161bbd1766738a1>
 
you can run if you'd like, though they're somewhat limited. They exist 
primarily to validate that the implementation has generally good 
performance (that is, no obvious outliers or scaling issues).

Note that performance-wise one of the biggest things the unique package has 
going for it is efficient reclamation of memory. If an interned value is no 
longer referenced via a handle, its memory will be reclaimed in the next GC 
cycle. This is difficult to do with a regular map because it's not really 
clear when one should delete map entries.

In terms of lookup/insertion/etc., I would expect unique.Make to perform 
much better than a locked map when doing operations in parallel, but 
perform slightly worse when everything is done on a single core. The 
underlying concurrent map implementation scales well to many cores in my 
testing.



On Tuesday, June 25, 2024 at 4:58:17 PM UTC-4 Juliusz Chroboczek wrote:

> Hi,
>
> Does anyone have any benchmarks for the new "unique" package? How does
> it compare with manual interning using a map?
>
> Thanks.
>
>

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