An easy benchmark to add:

[egonelbre]

Here's an easy benchmark to see the impact of the Layout. Making forks etc. is slightly annoying, so this is a faster way to do it :D.

package main

import (
	"gio-v/wid"
	"image"
	"testing"

	"gioui.org/font/gofont"
	"gioui.org/io/router"
	"gioui.org/io/system"
	"gioui.org/layout"
	"gioui.org/op"
)

func BenchmarkLayout(b *testing.B) {
	makePersons()
	currentTheme = wid.NewTheme(gofont.Collection(), 14, wid.MaterialDesignLight)
	setup()

	b.ResetTimer()
	b.ReportAllocs()

	var ops op.Ops
	var r router.Router
	for i := 0; i < b.N; i++ {
		gtx := layout.NewContext(&ops, system.FrameEvent{
			Size: image.Point{
				X: 1024,
				Y: 1024,
			},
			Queue: &r,
		})
		wid.Root(gtx)
	}
}