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A comment on ZGC: A Scalable Low-Latency Garbage Collector [video]. Parent comment

Re:ZGC: A Scalable Low-Latency Garbage Collector [video] by chrisseaton on Sunday October 28, 2018 @06:43PM (#18323676)
> probably due to increased allocation times

Doesn’t C4 still use a thread-local bump allocator? How does that increase allocation time?

I would think it’s much more likely to be the complex barriers.

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Re:ZGC: A Scalable Low-Latency Garbage Collector [video] by gbasin on Sunday November 04, 2018 @06:34PM (#18378663)
Yes you're probably right. I haven't dug much into it myself
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Re:ZGC: A Scalable Low-Latency Garbage Collector [video] by giltene on Saturday November 10, 2018 @01:54PM (#18422837)
If you did (dig into it yourself), you'd quickly find out that the urban myth about Zing somehow hurting latencies across the board is plain wrong. In fact, these days it tends to be percievably faster (in both latency and throughput) in about 70-80% of the workload we encounter. Certainly when compared to G1GC and CMS, and often even when compared to ParallelGC... E.g. it is typicaly >10% faster at things like Cassandra, Spark (TPC-DS), LMAX Disruptor workloads, etc. etc. etc.
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