Noise ripped out after the bench verdict (tightly-wrapped unshielded cables move victim SNR only 0.2-0.3 dB, recorded in measurement.md dead ends): noise.go deleted with the noiser, phase clock and panel lane; configureNoise/checkPrivFlag gone so the X710 pair is untouched; console noise column, NOISE links rows and lane colors removed; driverPair rehomed to system.go, carrierUp to phy.go; history anchors to run start (frame-rate sampling and draw-clock roll kept — they fix display latency for every lane); goals/hardware/state/nics docs updated; verified on hardware (20.00G, zero errors, ECD 41m, SNR +7.6)

main.go

@@ -69,7 +69,6 @@ var intervalCols = []colSpec{
 	{group: "NOW", title: "link", width: 7, right: true},
 	{group: "NOW", title: "internal", width: 8, right: true},
 	{group: "NOW", title: "corrected", width: 9, right: true},
-	{group: "NOW", title: "noise", width: 7, right: true},
 	{group: "OVERALL", title: "elapsed", width: 9, right: true},
 	{group: "OVERALL", title: "packets", width: 9, right: true},
 	{group: "OVERALL", title: "bytes", width: 9, right: true},
@@ -82,9 +81,8 @@ var intervalCols = []colSpec{
 }
 
 // The same figures the panel draws, in the same order: the last second as
-// rates and error flags with the noise cable riding at the end of them, then
-// everything since the reset.
-func totalRow(elapsed time.Duration, v view, target float64, phy phyDisplay, nv noiseView) []string {
+// rates and error flags, then everything since the reset.
+func totalRow(elapsed time.Duration, v view, target float64, phy phyDisplay) []string {
 	return []string{
 		rateCell(v.rxGbps*1e9, target*1e9),
 		scaleSI(v.rxPPS),
@@ -94,7 +92,6 @@ func totalRow(elapsed time.Duration, v view, target float64, phy phyDisplay, nv
 		flagCell(v.window.link),
 		flagCell(v.window.internal),
 		correctedFlag(phy.recent),
-		noiseCell(nv),
 		scaleTime(elapsed),
 		scaleCount(v.rxFrames),
 		scaleCount(v.rxBytes),
@@ -202,14 +199,7 @@ func run(aName, bName string) (err error) {
 	if err != nil {
 		return err
 	}
-	noise, err := newNoiser()
-	if err != nil {
-		return err
-	}
-	defer noise.close()
-
 	a.tag, b.tag = "TEST A", "TEST B"
-	noise.eps[0].tag, noise.eps[1].tag = "NOISE A", "NOISE B"
 	ifnames := []string{a.name, b.name}
 
 	ethertypes := make([]uint16, numStreams)
@@ -224,7 +214,6 @@ func run(aName, bName string) (err error) {
 
 	checks := configureSystem(ifnames, ethertypes)
 	checks = append(checks, moduleChecks(modules, [2]string{a.name, b.name})...)
-	checks = append(checks, configureNoise(noise.names())...)
 	if err := reportChecks("SETTINGS", checks); err != nil {
 		return err
 	}
@@ -261,13 +250,9 @@ func run(aName, bName string) (err error) {
 	}()
 
 	var linkRows [][]string
-	for i, e := range []endpoint{a, b, noise.eps[0], noise.eps[1]} {
-		mod := ""
-		if i < len(moduleIDs) {
-			mod = moduleIDs[i]
-		}
+	for i, e := range []endpoint{a, b} {
 		linkRows = append(linkRows, []string{
-			paint(e.tag, cCyan), e.name, e.macString(), fmt.Sprintf("%d", e.mtu), mod,
+			paint(e.tag, cCyan), e.name, e.macString(), fmt.Sprintf("%d", e.mtu), moduleIDs[i],
 		})
 	}
 	fmt.Println(renderBox("LINKS",
@@ -295,14 +280,6 @@ func run(aName, bName string) (err error) {
 		defer holdPanic()
 		samp.run(&done, startTx)
 	}()
-	// Not gated on startTx: the cycle and the connected verdict are wanted the
-	// moment the panel is, and nothing it does touches the measurement.
-	wg.Add(1)
-	go func() {
-		defer wg.Done()
-		defer holdPanic()
-		noise.run(&done)
-	}()
 	for _, m := range modules {
 		wg.Add(1)
 		go func() {
@@ -359,9 +336,7 @@ func run(aName, bName string) (err error) {
 	}
 
 	start := time.Now()
-	// Anchored to the same clock as the noise cycle, so slot boundaries and
-	// phase transitions coincide.
-	hist := newHistory(rateEpochStart)
+	hist := newHistory(start)
 	// A reset resets at the press, then re-measures; the measure's failures
 	// are suppressed at their sources while it runs, so there is nothing to
 	// hide or revert afterwards.
@@ -405,7 +380,7 @@ func run(aName, bName string) (err error) {
 			phy, measuring := phyView(diag, modules)
 			hist.sample(now, v, phy, measuring, target)
 			if err := disp.render(v, now.Sub(start), phy, measuring,
-				noise.view(), hist.view(now), target); err != nil {
+				hist.view(now), target); err != nil {
 				return err
 			}
 		case now := <-tick.C:
@@ -420,8 +395,7 @@ func run(aName, bName string) (err error) {
 					fmt.Println(stats.rule(n))
 				}
 			}
-			for _, line := range stats.emit(totalRow(elapsed, v, target, phy,
-				noise.view())) {
+			for _, line := range stats.emit(totalRow(elapsed, v, target, phy)) {
 				fmt.Println(line)
 			}
 		}