For the record, here's a profile of a while true + console log: https://share.firefox.dev/4fKLwih
Bug 1928670 Comment 11 Edit History
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For the record, here's a profile of a while true + console log: https://share.firefox.dev/4fKLwih Overall devtools code seems responsible for 2/3rd of time spent in the parent process, the rest seems to be the platform overhead.