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ICX 7450-48 appl process cpu usage

New Contributor II
Hi guys,

Hope you're well.

We've noticed a very strange behaviour in our ICX7450. We got a very high CPU usage but didn't ffind anything that justify it. This only occurs with CPU0. CPU1 is working fine as you can see below.

SSH@SPCRDC2ITA001#sh cpu-utilization 
7 percent busy, from 4 sec ago
1   sec avg: 99 percent busy
5   sec avg:  8 percent busy
60  sec avg:  9 percent busy
300 sec avg:  7 percent busy
0 percent busy, from 2 sec ago
1   sec avg: 0 percent busy
5   sec avg: 0 percent busy
60  sec avg: 0 percent busy
300 sec avg: 0 percent busy


SSH@SPCRDC2ITA001#sh cpu-utilization tasks 
top - 16:57:11 up 160 days, 13:54,  0 users,  load average: 4.18, 4.02, 3.97
 Threads: 163 total,   2 running, 161 sleeping,   0 stopped,   0 zombie
 %Cpu0  :  87.0/12.3   99[||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ]
 %Cpu1  :   0.0/0.0     0[                                                                                                    ]
 GiB Mem : 22.8/1.951    [                                                                                                    ]
 GiB Swap:  0.0/0.000    [                                                                                                    ]

The proccess that seems to be offendig this device is

  1590 root      21   1  670.6m 369.9m 85.0 18.5 164688:55 R          `- appl

So, there is a way to restart just this process or something like that? Do you know what is the cause of this usage for this task?

We are trying to avoid a device restart in this case.

Thanks in advance.



Hey Marcelo, 

I would advise opening a support case so we can troubleshoot what is hitting the CPU. I would not worry about appl in show cpu task. The generic fastiron process correlates with appl and generally shows as almost all of the usage there. 

Ben Beck, RCNA, RCNI, Principal Technical Support Engineer

View solution in original post


High CPU (in 'show cpu') situations are generally unique, so it is hard to compare them. If you have high CPU and need help troubleshooting, please open a support case.

APPL task in 'show cpu task' will generally show the most usage (expected) even when overall CPU usage (value in 'show cpu') is low. This does not indicate a problem.

Ben Beck, RCNA, RCNI, Principal Technical Support Engineer

New Contributor

We are experiencing a High CPU during the day on ICX 7250 running Switching (Layer 2 traffic) and we used to have a high CPU on ICX 7550 Router due to Layer 4 and 5 packets. 
The reason why I mentioned both models is that both were connected to VSmart Zone and both were dropping CPU to 1%  after I dsiconected them from SZ.  So, we had the cas opened with Support and It took a lot itme to figure out why we had a hight CPU.