Extreme Networks ExtremeWare 7.0.0, Command Reference Manual, Page: 1583 / 1598

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ExtremeWare Software 7.0.0 Command Reference Guide 1583
Investigate tasks that, for no apparent reason, show CPU utilization consistently above 25% (except for
the BGTask). Configure the appropriate debug-trace command and look for messages indicating a
problem. Common problems are source or destination addresses.
Example
The following command displays the show command output on the switch:
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The output of this command looks similar to the following:
Total number of tasks: 46
Task Name Task Id Task PC Status % CPU Max % util
==========================================================================
tBGTask 836f18e0 80748f98 READY 99 99
tExcTask 8137ce90 8075ab2c PEND 0 0
tLogTask 8135e2a0 8075ab2c PEND 0 0
tSlowTimer 813ccf50 8075ab2c PEND 0 0
tFastTimer 813ff1f0 8075ab2c PEND 0 0
tRxMsgTask The receive message task (tRxMsgTask) is located on the secondary system.
ExtremeWare 6.2 commences use of the secondary CPU in BlackDiamond switches.
This is the secondary slave CPU inter-CPU receive task.
tServAlive The server load balancing (SLB) health check server task.
tShell The core operating system internal shell process (tShell) is spawned whenever the
internal shell is accessed.
tSlbFailover The server load balancing failover task.
tSlowTimer The slow timer task (tSlowTimer) maintains a queue of timer events triggering
periodic or single event functions. Typically these events have a large period gap in
terms of time between reccurrences.
tsmartTrap Extreme smart trap task.
tSnmpd The SNMP daemon task manages all SNMP processing on the system.
tSntpc The simple network time protocol client task (tSntpc) implements the SNTP client
function and processing.
tsshshell The secure shell (SSH) task.
tStatsPoll The port interface statistics poll task (tStatsPoll) polls the port interfaces for statistic
counters.
tstpTask The Spanning Tree protocol task (tstpTask) implements the STP algorithm and
processing.
tSwFault The software fault handler task (tSwFault) will perform a stack dump for any task that
has crashed.
tsyslogTask The system log task (tsyslogTask) receives messages/text from other tasks and
asynchronously logs these to the switch NVRAM log area.
tTimeout The Timeout task (tTimeout) is used to manage and execute various functions on
timeouts.
tTRRecv The trace route receiver task (tTrRecv) is spawned dynamically when the trace route
utility is used.
tvrrpTask The virtual router redundancy protocol task (tvrrpTask) implements and processes
VRRP on the switch.
Table 30: ExtremeWare Task Descriptions (continued)
Task Description