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Redraw at 60Hz with adaptive rate smoothing, console output at 1Hz

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This commit is contained in:
flamingcow
2026-07-25 21:30:37 -07:00
parent 12958ced56
commit b2441ba64a
2 changed files with 224 additions and 30 deletions
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ui.go
+16 -6
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@@ -106,6 +106,17 @@ func (d *display) center(f *textFace, y int, s string, col rgb) {
f.draw(d.fb, (d.fb.w-len([]rune(s))*f.cellW)/2, y, s, col)
}
// Rendered rates are quantised so the text only changes when the value moves
// meaningfully. Without this the low digits churn every frame no matter how
// long the averaging window is.
func roundPPS(v float64) uint64 {
const unit = 1000
if v < 0 {
return 0
}
return uint64((v+unit/2)/unit) * unit
}
func errColor(n uint64) rgb {
if n == 0 {
return uiGreen
@@ -156,7 +167,7 @@ func (d *display) render(dirs []*direction, views []view, elapsed time.Duration,
avail := fb.h - (bandY + bandH) - 16
y := bandY + bandH + 8 + (avail-2*sectionH-gap)/2
y = d.section(y, "INSTANT", "this interval")
y = d.section(y, "RATE")
d.rightAt(colTxGbEnd, y, "TX Gb/s", uiDim)
d.rightAt(colTxPPSEnd, y, "TX pps", uiDim)
d.rightAt(colRxGbEnd, y, "RX Gb/s", uiDim)
@@ -166,14 +177,14 @@ func (d *display) render(dirs []*direction, views []view, elapsed time.Duration,
d.dirTag(dir, y)
v := views[i]
d.rightAt(colTxGbEnd, y, fmt.Sprintf("%.2f", v.txGbps), rateColor(v.txGbps, target))
d.rightAt(colTxPPSEnd, y, commas(uint64(v.txPPS)), uiFg)
d.rightAt(colTxPPSEnd, y, commas(roundPPS(v.txPPS)), uiFg)
d.rightAt(colRxGbEnd, y, fmt.Sprintf("%.2f", v.rxGbps), rateColor(v.rxGbps, target))
d.rightAt(colRxPPSEnd, y, commas(uint64(v.rxPPS)), uiFg)
d.rightAt(colRxPPSEnd, y, commas(roundPPS(v.rxPPS)), uiFg)
y += lineH
}
y += gap
y = d.section(y, "CUMULATIVE", "since reset")
y = d.section(y, "OVERALL")
d.rightAt(colFramesEnd, y, "frames", uiDim)
d.rightAt(colDataEnd, y, "data", uiDim)
d.rightAt(colLostEnd, y, "lost", uiDim)
@@ -196,9 +207,8 @@ func (d *display) render(dirs []*direction, views []view, elapsed time.Duration,
fb.flush()
}
func (d *display) section(y int, title, sub string) int {
func (d *display) section(y int, title string) int {
d.small.draw(d.fb, uiMargin, y, title, uiFg)
d.small.draw(d.fb, uiMargin+(len(title)+2)*d.small.cellW, y, sub, uiDim)
ruleY := y + d.small.cellH + 3
d.fb.rect(uiMargin, ruleY, d.fb.w-2*uiMargin, 1, uiRule)
return ruleY + 7