>From further research (and anybody correct me if this is wrong), when the GC does collect memory the profile shrinks, but *no memory is returned to the system*. Any future allocations will try to use memory from the pool of previously collected objects before asking the system for more. This is why things are behaving this way.
On Sunday, April 18, 2021 at 12:34:44 PM UTC-5 Trig wrote: > Also, I don't think it's the Stack. If you replace Alloc with > HeapAlloc... it's all there. > > On Sunday, April 18, 2021 at 12:33:20 PM UTC-5 Trig wrote: > >> Correct... the example using time.Sleep didn't run on the playground. >> The original post I made, I provided the link with just a goroutine with an >> empty function. >> >> At least you were able to reproduce what I'm inquiring about. I'll look >> further into this, but surely unused and finished goroutines don't leave >> stuff laying around like that. >> >> On Sunday, April 18, 2021 at 3:47:10 AM UTC-5 Brian Candler wrote: >> >>> What do you mean by "It won't work on the playground"? It runs for me. >>> Are you saying you get different results when running locally? If so, what >>> version of go are you running locally, on what platform, and what do you >>> see? >>> >>> Or are you saying the problem is really with something like this? >>> https://play.golang.org/p/Q91Qd-DvvKx >>> >>> That indeed fails to run in the playground - it exits with signal 9 >>> (128+9=137) >>> >>> Running locally with go 1.16.3 under macOS (Intel) I see: >>> >>> Allocs before: 82696 >>> Allocs while running: 51496728 >>> Allocs after: 40384112 >>> Allocs after: 40384112 >>> Allocs after: 40384112 >>> Allocs after: 40384112 >>> Allocs after: 40384112 >>> >>> That is 40MB that apparently isn't reclaimed, but it does get reused if >>> you run more goroutines: >>> https://play.golang.org/p/YcMTlLYxXAP >>> >>> I don't know why that is. It's about 400 bytes per goroutine. Stack >>> perhaps? >>> >> -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/f42e270a-7ae9-4f11-bb85-d94bcbd331f1n%40googlegroups.com.
