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Cisco Bug: CSCui99039 - Debug enhancement for WatchDog timer expired

Last Modified

Apr 17, 2019

Products (1)

  • Cisco RF Gateway Series

Known Affected Releases

15.0(2)SQA

Description (partial)

Symptom:
Aug 28 22:50:24.866 EDT: %RFGW-3-LINECARD_FAILURE: Linecard in slot 4 is reporting a MPEG Failure (0x0001)
Aug 28 22:50:24.872 EDT: %C4K_CHASSIS-2-LINECARDDS384MAJOREVENT: Slot 4, source 1 detects Watchdog Expired, sequence: 1 (0x9B01206A)
Aug 28 22:50:27.254 EDT: %RFGW-6-HEARTBEAT_WARNING: Heartbeat process has failed to receive heartbeats (for 3 consecutive seconds), for linecard 4
Aug 28 22:50:29.254 EDT: %RFGW-3-HEARTBEAT_FATAL: Heartbeat process has failed to receive heartbeats (for 5 consecutive seconds), resetting linecard 4

Code changes done to adjust the WatchDog thread priority and to add debug codes on Steelhead write/read of WatchDog timer tick values. This is not a fix; But,

1. Try avoid CPU starving scenario of WatchDog thread 
2. Dump debug logs on Steelhead write/read of WatchDog timer tick values.

Conditions:
DS384 running with SQB. We suspect the WatchDog thread starving for CPU, causing the timer expiry. Also there may be issue while updating the time ticker value by SteelHead FPGA.
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