3 ms·

The biggest takeaway from this should be the difference between Wednesday(0%) vs. Thursday(90+%) is the difference between optimizing on a hunch and optimizing

• badman_ting 13y ago
  Chrome Dev Tools told him where the time was being spent, but the hunch still had to be there. He still had to know about a previous optimization that had worked, and the change that ended up working began with the words "I wondered…" Also note that he says "Perceived rendering went down to 960ms". So this is largely done to alter perceptions anyway, not necessarily total throughput or however you'd like to phrase it.