Cisco Bug: CSCvt55506 - Socket process causing High CPU
Aug 25, 2020
- Cisco TelePresence Video Communication Server (VCS)
- Cisco TelePresence Video Communication Server Model
- Cisco Expressway
Known Affected Releases
X12.5 X12.5.3 X12.5.4 X12.5.5 X12.5.6 X12.5.7 X12.5.9 X12.6
Symptom: Some combination of the following: - Poor video / audio call quality - Kernel reports Tx hang/resetting, which causes existing connections to be terminated and be reestablished - Expressway/VCS reports an application error. An alarm is raised reporting that an unexpected software error was detected (Application failed - WatchdogThread, ACR: raise Line: 0) - High CPU reported for Expressway server consistently even with low to minimal activity. This can be confirmed by logging in as root, and then running: ~# top -b -n 1 -H Output shows: - Command: Socket - S: R (Running) state with a substantial TIME+ and %CPU Example output: top - 02:00:45 up 30 days, 40 min, 2 users, load average: 2.56, 2.01, 2.05 Threads: 498 total, 2 running, 496 sleeping, 0 stopped, 0 zombie %Cpu(s): 36.4 us, 29.5 sy, 0.0 ni, 34.1 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 15657 root -51 0 741512 511248 52380 R 99.9 8.4 2480:23 Socket Conditions: Expressway with X12.5 or later, after many calls have terminated abnormally.
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.
Bug Details Include
- Full Description (including symptoms, conditions and workarounds)
- Known Fixed Releases
- Related Community Discussions
- Number of Related Support Cases