Mikhail ChusavitinandClaude Sonnet 5
b09e94d02a
The fan-ceiling check, the webui metrics collector (every 5s) and the PSU health poller each shelled out to ipmitool independently. The BMC's KCS interface serializes those calls anyway, so under load the concurrent `ipmitool sdr`/`dcmi power reading` invocations just queued behind each other — that's what produced "IPMI slow" backoff during a fan-ceiling run in a blackbox dump, while the dashboard looked fine only because it was reading its own, separately-stale data from a different ipmitool call. hw_telemetry.go is now the sole recurring poller (fan RPM, temperature, PSU power/status, DCMI system power), with the adaptive 1s-30s backoff that used to be duplicated inside the fan check. Every hot-path consumer reads the shared cache (hwSnapshot / platform.HardwareSDRSnapshot) instead of calling ipmitool itself. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>