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The Zed Debugger Is Here

(zed.dev)
502 points SupremumLimit | 1 comments | 19 Jun 25 02:42 UTC | HN request time: 0.208s | source
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writebetterc ◴[19 Jun 25 08:35 UTC] No.44316633[source]▶
It's surprisingly slow. Switching files in the tab list has a noticeable delay. Typing is higher latency than both Emacs (lsp-mode activated) and my web browser. Also uses approximately 60MiB more than my Emacs. It starts fast though!

I wouldn't complain about this stuff if it wasn't for their tagline being 'it's fast' and they're losing to Emacs Lisp (not a language amenable to being very fast) with a highly optimized C core.

I looked at their plugins, they're compiled into WASM and run in some VM. Maybe that's part of it?

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1. GrayShade ◴[19 Jun 25 09:44 UTC] No.44317003[source]▶
> I looked at their plugins, they're compiled into WASM and run in some VM. Maybe that's part of it?

No. The ones I've looked just set up stuff, like launching a language server. They shouldn't be involved in typing.

I think it's related to the GPU usage. It's easy to introduce delays when you do GPU compositing, and the OS will already be doing its own.

As for emacs, IIRC they did some ugly things to update the UI directly instead of going through the normal event loop, which was causing compatibility issues later on.