There are none, or you're not aware of their existence?

There are no production implementations of GC algorithms that don't stop the world at all. I know this because I have some expertise in GC algorithms.

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kelseyfrog 7 months ago | parent [-]

I'm curious why you don't consider C4 to be production grade

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pebal 7 months ago | parent [-]

Azul C4 is not a pauseless GC. In the documentation it says "C4 uses a 4-stage concurrent execution mechanism that eliminates almost all stop-the-world pauses."

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kelseyfrog 7 months ago | parent [-]

Except the documentation says

> C4 differentiates itself from other generational garbage collectors by supporting simultaneous-generational con- currency: the different generations are collected using concurrent (non stop-the-world) mechanisms

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pebal 7 months ago | parent [-]

It doesn't matter at all. C4 uses STW.

	▲	kelseyfrog 7 months ago \| parent [-]
		I wish I could have learned more from this interaction than it doesn't matter.