Cisco CRS-1 - Carrier Routing System Router Troubleshooting Guide

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Cisco IOS XR Troubleshooting Guide for the Cisco CRS-1 Router
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Chapter 8 Process Monitoring and Troubleshooting
Process Monitoring
To troubleshoot a blocked process, use the procedure in the “Troubleshooting a Process Block” section
on page 8-188.
Process Monitoring
Significant events of the sysmgr are stored in /tmp/sysmgr.log. The log is a wrapping buffer and is useful
for troubleshooting. Use the show processes aborts location node-id all command or the show sysmgr
trace verbose | include PROC_ABORT command to display an overview of abnormally terminated
processes.
Because the sysmgr is already monitoring all processes on the system it is not necessarily required to
monitor vital processes by external management tools. But, you can use the show fault manager metric
process pid location node-id command to check critical processes on a regular basis (for example, twice
each day). The command output provides information including the abort behavior and the reason of the
particular process.
The following example shows OSPF critical process details. Check the number of times the process
ended abnormally and the number of abnormal ends within the past time periods.
RP/0/RP0/CPU0:router# show fault manager metric process ospf location
=====================================
job id: 269, node name: 0/RP0/CPU0
process name: ospf, instance: 1
--------------------------------
last event type: process start
Table 8-1 Thread States
If the State is: The Thread is:
DEAD Dead. The Kernel is waiting to release the threads resources.
RUNNING Actively running on a CPU.
READY Not running on a CPU but is ready to run.
STOPPED Suspended (SIGSTOP signal).
SEND Waiting for a server to receive a message.
RECEIVE Waiting for a client to send a message.
REPLY Waiting for a server to reply to a message.
STACK Waiting for more stack to be allocate.
WAITPAGE Waiting for the process manager to resolve a page fault.
SIGSUSPEND Waiting for a signal.
SIGWAITINFO Waiting for a signal.
NANOSLEEP Sleeping for a period of time.
MUTEX Waiting to acquire a mutex.
CONDVAR Waiting for a conditional variable to be signaled.
JOIN Waiting for the completion of another thread.
INTR Waiting for an interrupt.
SEM Waiting to acquire a semaphore.

Cisco CRS-1 - Carrier Routing System Router Specifications

General

Brand	Cisco
Model	CRS-1 - Carrier Routing System Router
Category	Network Router
Language	English