show processes cpu problem!

Answered Question
Apr 2nd, 2009
User Badges:

Hello all,

I have a CPU process problem, the total five minutes CPU is showed 30%. But after I sum all processes, 5Mins is only 1.74, 1Min is 2.05, and 5Secs is 3.43. It is lower than 30%. It is very confused me. What process take use the rest CPU 28% (30%-1.74%)? How to show it out?

The router platform is 7204VXR (NPE225), version Version 12.4(18). Normally the traffic is between 10Mbps to 20Mbps.


show processes cpu | exclude 0.00%__0.00%__0.00%

CPU utilization for five seconds: 34%/31%; one minute: 31%; five minutes: 30%

PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process

5 38377876 3515612 10916 0.00% 0.11% 0.06% 0 Check heaps

17 16871104 33924839 497 0.00% 0.02% 0.02% 0 EnvMon

34 14047416 48239884 291 0.00% 0.03% 0.01% 0 IP SNMP

41 314768760 33978173 9263 0.49% 0.60% 0.62% 0 Per-Second Jobs

60 343959268 914963657 375 0.49% 0.77% 0.87% 0 IP Input

66 128412 132585016 0 0.00% 0.01% 0.00% 0 SSS Feature Time

80 57476 48863899 1 0.00% 0.01% 0.00% 0 CEF process

91 119148 339104469 0 0.00% 0.04% 0.05% 0 RBSCP Background

117 2131928 35203856 60 0.00% 0.01% 0.00% 0 OSPF-100 Hello

143 316 17300 18 2.29% 0.18% 0.03% 2 Virtual Exec

146 9689108 575629 16832 0.00% 0.02% 0.00% 0 Per-minute Jobs

148 4631732 24126908 191 0.00% 0.01% 0.00% 0 PDU DISPATCHER

149 31188136 24360132 1280 0.00% 0.17% 0.08% 0 SNMP ENGINE

153 8479340 48287339 175 0.16% 0.03% 0.00% 0 OSPF-100 Router

156 17074656 2267307 7530 0.00% 0.02% 0.00% 0 BGP Scanner

Thank your

Jeffrey

Correct Answer by Giuseppe Larosa about 8 years 2 months ago

Hello Jeffery,

the show cpu takes in account also cpu usage caused by interrupts:


CPU utilization for five seconds: 34%/31%; one minute: 31%; five minutes: 30%


you see 34%/31% the 31% is caused by interrupts.


if this is a software based router this can be normal and related to traffic volume.

for this reasons the sum of cpu usage caused by processes is so low in comparison to total cpu usage over time


Hope to help

Giuseppe


  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (1 ratings)
Loading.
Correct Answer
Giuseppe Larosa Thu, 04/02/2009 - 02:42
User Badges:
  • Super Silver, 17500 points or more
  • Hall of Fame,

    Founding Member

Hello Jeffery,

the show cpu takes in account also cpu usage caused by interrupts:


CPU utilization for five seconds: 34%/31%; one minute: 31%; five minutes: 30%


you see 34%/31% the 31% is caused by interrupts.


if this is a software based router this can be normal and related to traffic volume.

for this reasons the sum of cpu usage caused by processes is so low in comparison to total cpu usage over time


Hope to help

Giuseppe


jefferyshi Thu, 04/02/2009 - 03:34
User Badges:

Hi Giuseppe,


It is very useful for me.


Thank you

Jeffrey

Actions

This Discussion