go - Golang Virtual Memory - heroku -

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using gorelic plugin, i've noticed virtual memory on heroku dyno steadily climbing though memory usage looks fine. virtual memory never appears exceed 1000m, when gets close start notice performance degradation.

i've used pprof profile memory usage of app , looks it's free of leaks. also, i've read suggests go reserve large blocks of virtual memory , it's nothing worry about.

is possible large virtual memory usage affecting performance on 1x heroku dyno? need use 2x dynos because go memory hog? possible configure go uses less virtual memory?

thanks!


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