[X440G2-48p-10G4] High CPU utilization caused by cliMaster process?

[SteveNguyen]

Hi Team,

At customer site, we have an X440G2 Switch that encountered high CPU utilization caused by cliMaster process (~30% in avg, ~70% at peak), even web https/https are disabled & no abnormal log observed as well.
Could you please let me know what is the best approach?
Thank you in advance.

code:

Switch_A.1 # sho sw
SysName: Switch_A
SysLocation: Lab
SysContact: support@extremenetworks.com, +1 888 257 3000
System MAC: 00:04:96:xx:xx:xx
System Type: X440G2-48p-10G4
SysHealth check: Enabled (Normal)
Recovery Mode: All
System Watchdog: Enabled
Current Time: Thu Feb 21 08:18:18 2019
Timezone: [Auto DST Disabled] GMT Offset: 420 minutes, name is Hanoi.
Boot Time: Wed Oct 18 20:06:59 2017
Boot Count: 11
Next Reboot: None scheduled
System UpTime: 490 days 12 hours 11 minutes 19 seconds
Current State: OPERATIONAL
Image Selected: primary
Image Booted: primary
Primary ver: 21.1.2.14
 patch1-2
Secondary ver: 21.1.2.14
Config Selected: primary.cfg
Config Booted: primary.cfg
primary.cfg Created by ExtremeXOS version 21.1.2.14
 391114 bytes saved on Thu Feb 21 08:14:57 2019

Switch_A.2 # top
Mem: 508336K used, 467792K free, 0K shrd, 3024K buff, 211764K cached
CPU: 25.5% usr 10.9% sys 0.0% nic 57.8% idle 0.0% io 4.9% irq 0.6% sirq
Load average: 6.24 6.30 6.23 3/201 3806
 PID PPID USER STAT RSS %MEM CPU %CPU COMMAND
2029 1 root S 27908 2.8 0 30.2 ./cliMaster
 1821 2 root SW< 0 0.0 0 2.3 [bcmLINK.0]

Switch_A.3 # sho cpu-monitoring
 CPU Utilization Statistics - Monitored every 5 seconds
-----------------------------------------------------------------------
Process 5 10 30 1 5 30 1 Max Total
 secs secs secs min mins mins hour User/System
 util util util util util util util util CPU Usage
 (%) (%) (%) (%) (%) (%) (%) (%) (secs)
-----------------------------------------------------------------------
System 6.2 6.3 8.6 6.8 6.4 6.4 6.3 33.2 2443.03 2586584.78
aaa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.4 725.62 1144.00
acl 0.2 0.1 0.0 0.1 0.0 0.1 0.1 10.9 10905.85 12997.17
bfd 0.0 0.0 0.0 0.2 0.2 0.1 0.1 2.2 5728.83 5679.43
bgp 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.00 0.00
brm 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.00 0.00
cfgmgr 0.8 0.5 0.5 0.6 0.5 0.5 0.5 4.4 6135.00 2150.89
cli 31.3 32.0 28.7 30.2 29.8 29.8 29.7 70.5 15762.98 3042.60

[EtherMAN · Accepted solution]

High cpu due to cli process is normal and you should see this anytime you log in and issue commands. It can also be caused if and when you trigger a backup of the active configuration. This is why we do all back ups during off hours. Also remember 99 % of what that switch is doing is being done in hardware so having High CPu usage only effects things the cpu has to process and not switch known network traffic.

You should have a log entry at the same time youo see the high usage showing who or what maybe using the cli