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  v1.2.6 — FDR statistics around the traffic run, and unused lanes turned off before the baseline Stable

  etwen released this 2026-10-21 22:55:09 +08:00 | 3 commits to main since this release

  ✨ New features

  blanton_fdr.sh — FDR statistics through phydiag fdrstat

  • Four sub-commands, each run on unit 0 then unit 1, over ports '1-259,270-565':
    start (fdrstat STArt bin_group=both Interval=30), clear (fdrstat clear), rdcnt (fdrstat Counters), stop (fdrstat STOp).
  • Output is printed as is, under a ### [time] unit N: ... header — no parsing, no PASS/FAIL.
  • -u 0 / -u 1 for one switch unit, -i <sec> for the interval, -n for a dry run. FDR_PORTS overrides the port list.

  FDR runs alongside the traffic test in Script A, B and C

  • Script A wraps its traffic baseline: fdr start after init, fdr clear after clear, fdr rdcnt after the run, fdr stop after the traffic stop. The traffic run is now 40 s instead of 15 s, so the counters are read after the first 30 s interval has been published — the same rule as prbsstat Ber.
  • Script B starts and clears FDR with the traffic setup, before the soak loop — the counters run for the whole soak — and reads them (rdcnt) in every soak round, after the Tray ID stress.
  • Script C reads them (rdcnt) before stopping the traffic and stops FDR after it — the closing read of the counters Script B started.

  Script A turns off the unused lanes before the BER baseline

  • unused_lanes.sh off — TX squelch on the unused retimer lanes and TSC31 (cd112-cd115) disabled on the TH6, on both switch boards.

  📦 Downloads

  File	Contents
  Script_ABC_Blanton_V1.2.6.zip	The full Tera Term working directory, including Blanton_Script/ to copy onto the DUT

  chmod +x ~/Blanton_Script/*.sh
  grep -rlU $'\r' ~/Blanton_Script    # expect no output
  

  ⚠️ Before you run

  • chmod +x after deploying. blanton_fdr.sh, unused_lanes.sh and retimer_lanes.sh are all called by path; unused_lanes.sh also refuses to start if retimer_lanes.sh is not executable.
  • blanton_fdr.sh stop sends fdrstat STOp — that keyword is inferred from prbsstat STOp and has not been checked on the bench. bcmcmd exits 0 even when the BCM shell rejects a command, so if it is wrong, FDR keeps running and only the log shows it. Check the first run.
  • FDR only runs when both switch units are enabled (SWB_UNIT0 = SWB_UNIT1 = 1). The single-unit branches have no FDR, and Script A's single-unit traffic run is still 15 s.
  • Script B's per-round fdr rdcnt is not gated by the unit settings — with one unit enabled, FDR was never started and each round just logs whatever fdrstat Counters returns.
  • Nothing turns the unused lanes back on. Script C has no unused_lanes.sh on; run it by hand when the DUT is needed in its normal state. Whether a reboot clears it has not been checked.
  • unused_lanes.sh off is not gated by SWB_UNIT0 / SWB_UNIT1 — it always acts on both boards.
  • blanton_ber.sh (Script A / C) still uses p=3 and sleep 30; see v1.2.5.
  • Script 4 has no teardown: finish it with blanton_tr518.sh stop and systemctl stop mlucas-amm.
  • FAN_SPEED is 100.

  🔗 Links

  • ARCHITECTURE.md — test flow, data models, constraints
  • CLAUDE.md — commands and the bench gotchas

  Full changelog: V1.2.5...V1.2.6

  Downloads

  • Script_ABC_Blanton_V1.2.6.zip
    245 KiB

    2026-10-21 22:55:25 +08:00
  • Source Code (ZIP)
  • Source Code (TAR.GZ)