Andy Wingo | Igalia - Open Source Consultancy and Development

Andy Wingo

Andy Wingo

Hacker.

North Carolina (USA)

I enjoy practicing aikido in my free time – and hacking, of course!

POSTS

Feb 14, 2025

tracepoints: gnarly but worth it

Hey all, quick post today to mention that I added tracing support to the Whippet GC library. If the support library for LTTng is available when Whippet is compiled, Whippet...

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Feb 10, 2025

whippet at fosdem

Hey all, the video of my FOSDEM talk on Whippet is up: Slides here, if that’s your thing.I ended the talk with some puzzling results around generational collection, which prompted...

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Feb 9, 2025

baffled by generational garbage collection

Usually in this space I like to share interesting things that I find out; you might call it a research-epistle-publish loop. Today, though, I come not with answers, but with...

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Jan 13, 2025

an annoying failure mode of copying nurseries

I just found a funny failure mode in the Whippet garbage collector and thought readers might be amused.Say you have a semi-space nursery and a semi-space old generation. Both are...

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Toots

the advantage of naming my gc project “whippet” is that when i search for it on mastodon, i get dog...

a minor collection in a whippet microbenchmark, 16MB total nursery: . 366µs total pause time . 12µs to get the...

me: gosh it is annoying that https://ui.perfetto.dev has its own binary file format, the old json format was nicealso me:...

Commits

[Chromium V8] [isolate-groups] Free code range before reservation is freed In pointer-compression configuratio...

[Chromium V8] [isolate-groups] Attach CodeRange to IsolateGroup, not process For multi-cage configurations, we...

[Chromium V8] [isolate-groups] Simplify non-pointer-compression configuration. NFC Without pointer compression...

[Chromium V8] [isolate-groups] Without pointer compression, just one isolate group There is no sensible meanin...