fishbowl

each column is one frame, newest on the right.

frame time, 0–50ms. the faint line is one screen refresh (…).

a dropped frame: longer than 1.5× a refresh. this is what lag looks like.

sim time: fish movement and the cursor flee logic. it's the same work under every renderer. log scale, 0.01–10ms, so tiny costs still show.

moving the cursor raises the aqua line a little. red only shows up when the whole frame runs late: add fish or switch to two.