Re:Go vs. Crystal Performance
by recursivecaveat on Tuesday June 23, 2020 @12:53PM
(#23616584)
Go sacrifices basically every other GC metric to minimize average pause times. Sortof a 'if you can't succeed, redefine success' mentality if you will.
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That's not necessarily a bad thing for writing web services. I used to spend a fair bit of time tuning JVM to achieve acceptable tail latencies for Java services, not to mention once in a while, they would need to be tuned again... Not so with Go.
Java now has two low latency collectors: ZGC and Shenandoah.
Re:Go vs. Crystal Performance
by jashmatthews on Tuesday June 23, 2020 @06:40PM
(#23621280)
The Go GC and the JVM GCs are built within very, very different constraints.
Since most short-lived allocations in Go are stack-allocated, the cost of adding a read-barrier and branching on every heap access is more expensive than the potential gain from bump-pointer allocation.