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by ableal 2001 days ago
> tracking every conceivable performance metric

Technically it's not a metric for one-of rendering, but memory leaks by an open browser tab have bugged me a bit lately.

Safari does a per URL report in MacOS, and the ancient MacBook with "only" 8GB RAM gets a tad hot and bothered when a local PC store page runs up a 1.5 GB tab just sitting there, GMail snarfs 1 GB if not opened in a fresh tab once in a while, etc.