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The Green Tea Garbage Collector

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6 days agoby 0xedb

Wow… this is an excellent article. I’ve always been fascinated by GCs (well, as long as I’ve known what they are), and I just love seeing this kind of technical but accessible explanation of how they work, their bottlenecks, and a great new idea about solving those bottlenecks. This is exactly the kind of article that I hope to see every time I load up hacker news

6 days agoby turtletontine

what revenue / profitable google services are actually relying on golang ?

6 days agoby dzonga

Acceleration by using the x86 AVX-512 extensions is especially compelling. Since ARM64 processors are becoming pervasive in server-side systems, is-there/will-there-be any optimization using the ARM64 NEON vector instructions in current or future Go versions? (The NEON instructions are 128-bit, instead of 512 bits in the AVX-512 set, but may still be useful.)

6 days agoby antonchekhov

gc varx as an enumeration of a centrifugal cycle per average cost

6 days agoby krbaccord94f

Really great read. Both as a refresher for GC and as an explanation on how approaches are having to change due to hardware.

6 days agoby btreecat

Still not a state of the art copying collector.

3 days agoby rurban

the two little slide decks showing each garbage collector in action are simply wonderful, and really help communicate how this improves go's GC situation

6 days agoby luafox

Congratulations to Michael Knyszek and Austin Clements for writing an absolutely top tier blog post that is as clear as it gets. I wish my writing was this good. I don't even use Go and it was still 100% a great use of my time to read this.

5 days agoby sirwhinesalot

Curious where the name is coming from/hinting at?

5 days agoby thenthenthen

Appreciated the human element paragraph at the end!

6 days agoby matthewmueller

This is very cool.

I've already been using bitvector SIMD for the sweep portion of mark/sweep. It's neat to see that tracing can be done this way.

VGF2P8AFFINEQB FTW

6 days agoby pizlonator

I wonder if it can be abused with malicious actors that can arrange the RAM to be filled with pages containing just one alive object.

6 days agoby cyberax

If we label the combinations of the seen and scanned bits as:

00: white

10: gray

11: black

then we cam describe it as a very cool variation of the tri-color gc algorithm.

https://en.wikipedia.org/wiki/Tracing_garbage_collection#Tri...

5 days agoby jecel

6 days agoby boris_m