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A comment on Go’s march to low-latency GC. Parent comment

Re:Go’s march to low-latency GC by needusername on Wednesday July 06, 2016 @01:47PM (#12044699)
> C4 never pauses

To my knowledge this is false. AFAIK while the C4 algorithm is pauseless the C4 implementation is not. It's just that the pauses are really short.

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Re:Go’s march to low-latency GC by sievebrain on Thursday July 07, 2016 @05:17AM (#12048296)
My understanding: C4 does not pause but the JVM still does for various other reasons and a part of the work on Zing has been forcing down those pause times too.
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Re:Go’s march to low-latency GC by cliffc on Friday July 08, 2016 @12:30PM (#12056721)
Sorta kinda all of the above. C4 the algo has no pauses, but individual threads stop to crawl their own stacks. i.e., threads stop doing mutator work, but only 1-by-1, and only for a very short partial self-stack crawl. C4 the impl I believe now has no pauses also. HotSpot the JVM has pauses, and yes much Zing was on forcing these pause times down. Cliff
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