And just creation is about 3x faster:
(report
(timings 1e7
(do (volatile! 42) nil)
(do (atom 42) nil)))
; | :expr | :time | :ratio | :perc |
; |-------------------------+-----------+--------+-------|
; | (do (volatile! 42) nil) | 22.849963 | 1.0 | 31.63 |
; | (do (atom 42) nil) | 72.237439 | 3.16 | 100.0 |
On Thursday, September 11, 2014 11:06:44 AM UTC+2, Frantisek Sodomka wrote:
>
> Using my timings macro:
> https://gist.github.com/fsodomka/5890711
>
> I am getting that:
> - creation & derefing is 60% faster
> - swapping is 25% faster
> - resetting is about the same
>
>
> ;;;;;;;;;; volatile vs. atom ;;;;;;;;;;
>
> (report
> (timings 1e7
> (deref (volatile! 42))
> (deref (atom 42))))
>
> ; | :expr | :time | :ratio | :perc |
> ; |------------------------+-----------+--------+-------|
> ; | (deref (volatile! 42)) | 30.688238 | 1.0 | 39.81 |
> ; | (deref (atom 42)) | 77.081141 | 2.51 | 100.0 |
>
>
> (report
> (let [v (volatile! 42)
> a (atom 42)]
> (timings 1e7
> (vswap! v inc)
> (swap! a inc))))
>
> ; | :expr | :time | :ratio | :perc |
> ; |----------------+------------+--------+-------|
> ; | (vswap! v inc) | 136.052946 | 1.0 | 75.08 |
> ; | (swap! a inc) | 181.218748 | 1.33 | 100.0 |
>
>
> (report
> (let [v (volatile! 42)
> a (atom 42)]
> (timings 1e7
> (vreset! v 10)
> (reset! a 10))))
>
> ; | :expr | :time | :ratio | :perc |
> ; |----------------+-----------+--------+-------|
> ; | (reset! a 10) | 98.755318 | 1.0 | 96.69 |
> ; | (vreset! v 10) | 102.13944 | 1.03 | 100.0 |
>
>
>
> On Thursday, September 11, 2014 6:18:08 AM UTC+2, puzzler wrote:
>>
>> I'm curious: how much faster are volatiles than atoms?
>>
>>
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