[HN Gopher] The Green Tea Garbage Collector
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       The Green Tea Garbage Collector
        
       Author : 0xedb
       Score  : 93 points
       Date   : 2025-10-29 17:03 UTC (5 hours ago)
        
 (HTM) web link (go.dev)
 (TXT) w3m dump (go.dev)
        
       | luafox wrote:
       | 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
        
       | dzonga wrote:
       | what revenue / profitable google services are actually relying on
       | golang ?
        
         | parliament32 wrote:
         | Kubernetes as a whole is the best example I can think of, given
         | that it's deployed in most modern tech companies and every
         | cloud provider offers a managed service.
        
       | turtletontine wrote:
       | 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
        
       | matthewmueller wrote:
       | Appreciated the human element paragraph at the end!
        
       | pizlonator wrote:
       | 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
        
         | jhoechtl wrote:
         | Wut? Oh boy https://www.felixcloutier.com/x86/gf2p8affineqb
        
           | themafia wrote:
           | vector, galois field, 2 to the power of 8, affine
           | transformation.
           | 
           | there's also the inverse:
           | https://www.felixcloutier.com/x86/gf2p8affineinvqb
        
       | boris_m wrote:
       | What's a page?
        
         | hedgehog wrote:
         | A (usually) small amount of memory that is the standard size
         | all the memory management hardware and software use. Often 16Kb
         | or 4Kb. If physical memory gets mapped to logical address
         | space, address space marked read only, data swapped in or out,
         | or logical address space gets mapped to other hardware (say GPU
         | memory or a network card's buffer) it's usually done by page.
         | 
         | https://en.wikipedia.org/wiki/Page_%28computer_memory%29
        
       | antonchekhov wrote:
       | 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.)
        
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       (page generated 2025-10-29 23:01 UTC)