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> Malloc/free are not cheap either.

They are still way cheaper than GC pauses in Go.



The Go GC with 1.5+ (and especially the work going on currently for 1.7) makes it all but unnoticeable for the majority of non-soft realtime (think HFT) systems:

https://talks.golang.org/2015/go-gc.pdf

For 99% of users, it is simply not noticeable anymore. Also note that I've worked at said HFT nanosecond latency types of firms the past 9 or so years.




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