Christoph Emsenhuber
cf44ce6a1e
Die TP6-Praemisse ist ausgefuehrt: drei Messreihen von einem kabelgebundenen Client in VLAN10, zwei davon mit laufendem Telegram-Videocall an zwei Orten. Ergebnis (Runbook §5): unter Dauer-Upload steigt die Latenz von 13 auf 40--60 ms, im Download auf 36--41 ms. Das sind +28 bis +47 ms und damit ueber der Schwelle von 30 ms, die §3 VOR der Messung festgelegt hat -- formal Fall B, CAKE ist begruendet. Die Einschraenkung gehoert zur Zahl: durch alle sechs Lastphasen lief ein Videocall, und es wurde kein einziger Problem-Button gedrueckt. Messbar ja, wahrnehmbar nein. waveform sagt zeitgleich Grade A -- kein Widerspruch, sondern ein kuerzerer Test, dessen Upload-Verteilung zweigipflig ist (25. Perzentil 14,5 ms, 75. Perzentil 47,5 ms). Erstmals dokumentiert: die tatsaechliche Linerate. Upload 9,6 Mbit, Download 54,6 Mbit. Die im Repo kolportierten "~10 Mbit" galten immer nur dem Upload. Der lautere Befund ist ein Nebenprodukt: der Core-Sampler hat 2,5 Stunden lang das iPhone mitgeschrieben. Sticky Client (ein Weg durchs ganze Haus, dreimal direkt an ap1 vorbei, eine einzige Uebergabe -- und die erst oben bei -73 dBm) und Band-Ping-Pong (zwoelf Wechsel in neun Minuten am selben Ort). Je Wechsel bis zu 4 s ohne Durchsatz -- als Obergrenze notiert, denn die Zaehler starten nach einer Neuanmeldung bei null; der saubere Test per ping auf das Telefon steht aus. Das passiert TROTZ aktivem 802.11k/v und FT, live geprueft: damit ist die Merkregel ref_ft_is_not_roaming historisch. Der Bandabstand von 8--10 dB ist dabei normale Physik; das Problem ist, dass 5 GHz an den Telefonier-Orten bei -75 bis -80 dBm landet. Zwei Messfehler bleiben dokumentiert, weil sie die Methode betreffen und beide denselben Typ haben -- die Anzeige war gruen, die Wirkung fehlte: speed.cloudflare.com/__down antwortet ohne User-Agent mit 403 und einem Byte (saubere Ping-Reihe ueber tote Flows), und ein Call lief 5,5 Minuten ohne Treiber (Marker geschrieben, nichts gemessen). Status nachgezogen -- Header inklusive: TP6 von "Praemisse pruefen" auf "gemessen, Fall B, nachrangig", TP25 auf kritischen Pfad. Rohdaten liegen unter docs/messdaten/tp6-20260820/, damit die Zahlen nachpruefbar bleiben. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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8.5 KiB
| 1 | ts_epoch,ts_local,ros_time,cpu,wan_rx_bps,wan_tx_bps,sta_iface,sta_signal,sta_tx_rate,sta_rx_rate,sta_tx_bps,sta_rx_bps,sta_uptime,sta_last_activity |
|---|---|
| 2 | 1787253834,21:23:54,21:23:54,5,147896,186216 |
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