Hi,

On Wednesday, March 19, 2014 3:55:22 PM UTC+1, Michał Marczyk wrote:
>
> Hashes are cached for Clojure collections, keywords and symbols, but 
> not for strings. 
>
> I wonder if people who report these perf regressions use long string 
> keys in their maps... 


As far as I can see, we have /lots/ of strings in sets and lots of strings 
as keys, but they are not particularly /long/ (usually less than 10-15 
Characters).  We have one hot spot in the code, where we create lots 
(hundreds of thousands up to millions) of sets, each containing one to five 
strings.  I will run a few tests and see whether that makes a difference.

Best,
stefan

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