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A comment on Garbage Collection for Systems Programmers. Parent comment

Re:Garbage Collection for Systems Programmers by hawk_ on Saturday March 30, 2024 @02:37PM (#39877434)
Strangely in our workloads we have noticed generational ZGC latencies are better than G1 at ~99th-99.9th percentile or below but worse at percentiles above that. The allocation rate is moderate.
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Re:Garbage Collection for Systems Programmers by kaba0 on Saturday March 30, 2024 @03:11PM (#39877688)
Above that you might easily get measuring artifacts, like the OS swapping out your process once, or so.
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Re:Garbage Collection for Systems Programmers by hawk_ on Saturday March 30, 2024 @03:45PM (#39877970)
Yes - but it's quite consistent. If it was 'noise' it wouldn't be.
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Re:Garbage Collection for Systems Programmers by loeg on Saturday March 30, 2024 @11:57PM (#39881273)
It can be easy to game metrics like this -- trading off p100 for p99.9 or p99. E.g., defer all the expensive work to 1 in every 10,000 operations.
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