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  • V1.1.4 db44f72352
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    v1.1.4 — A thermal and safety run that loads the box and watches the rails Stable

    etwen released this 2026-08-31 22:19:43 +08:00 | 20 commits to main since this release

    ✨ New features

    4_Blanton_Script_thermal_safety.ttl

    • A standalone script — it is not part of the A → B → C chain and is not started by any of them. Run it on its own when the question is thermal or safety rather than functional.
    • Brings the DUT up the same way Script A does (login, session reset, fan speed, wait_init, DUT inventory, BMC, PCIe error clear, pcie_bus, PMON, dmesg), then loads it: mlucas-avx2 -cpu 0:15 in the background and blanton_tr518.sh start on the data plane.
    • Then loops every minute: platform data, both switch boards' rail power via TH6_SWB0/1_power_readback.sh, and bgctl list / jobs. That is the point of the script — power per rail under sustained full load, sampled over hours.
    • It has no teardown. When you interrupt it the DUT is still in port cd lb=mac, l2 learn off and test mode nr=yes, and mlucas-avx2 is still running. Run blanton_tr518.sh stop and kill $(jobs -p) before anything else uses the box — nothing in show interfaces status reveals the leftover state.
    • It cannot share a DUT with Script B. Both take over the cd ports.

    Test flow diagram

    • docs/Blanton_Test_Flow.drawio draws all four scripts side by side, with the config flags that change each step marked, the one real goto in Script B drawn, and the manual handoffs between A → B → C shown as such.

    🐛 Bug fixes

    The soak loop spent most of its minute reading margin

    • Script B's per-round loop is meant to be a quick sample. margin_status_all.sh walks nine LTC2980s over I2C and dominated the round. The scan moved to Script C, which takes it once before show uptime.
    • The trade-off is real and worth knowing: margin is now only measured at the start (Script A) and the end (Script C). Drift that happens during the soak is no longer visible.

    hw-test-session finish ran from inside the session's own shell

    • Script C now sends exit and waits for Script done first, so finish runs in the login shell that opened the session.

    The new script arrived with LF line endings

    • Every other .ttl in the repo is CRLF, and .gitattributes marks *.ttl as -text — whatever is committed is exactly what Tera Term gets. Converted to CRLF to match.

    📦 Downloads

    File Contents
    Script_ABC_Blanton_V1.1.4.zip The full Tera Term working directory, including Blanton_Script/ to copy onto the DUT

    After copying to the DUT:

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

    blanton_ber.sh, nfc_polling.sh, blanton_tr518.sh and the two TH6_SWB*_power_readback.sh are invoked through ./ or ~/, so they need the execute bit along with bmc_monitor.sh and usb_target.sh — neither git nor a Windows/USB copy carries it reliably.

    ⚠️ Before you run

    • Script 4 leaves the switch loaded and looped back. Always finish with blanton_tr518.sh stop. If the next test starts without it, traffic and BER results are meaningless and nothing warns you.
    • Do not run Script 4 and Script B on the same DUT. Same ports, same L2 settings.
    • Margin is no longer sampled during the soak — only Script A (start) and Script C (end).
    • Re-baseline your margin limits if you have not already: VNOM became the measured median in v1.1.3, which moved both the deviation % and the margin window.
    • These three cannot share the switch: blanton_ber.sh, blanton_tr518.sh, blanton_traffic_linespeed.
    • PRBS takes the links down while blanton_ber.sh is armed.
    • ce0 keeps circulating until you stop it.
    • Two numbers must stay in step: Script C's sleep 30 and blanton_ber.sh's BER_INTERVAL.
    • FAN_SPEED is 100 — relevant here more than anywhere: a thermal run at full fan is not the same test as one at 30%.
    • The three items listed as unverified in v1.1.0 are still unverified: the ce0 ingress mirror, the 120s settle in blanton_tr518.sh, and test mode nr=no on stop. The settle matters most for this release — Script 4 depends on tr 518 still driving traffic minutes after it was started.

    🔗 Links

    Full changelog: V1.1.3...V1.1.4

    Downloads