top output: 8 cpus busy in user-mode activities, 6 processes running

[Troy Knabe]

My understanding is that "top" refreshes every 5 seconds by default.  So at the instant of the refresh, it is reporting what processes are actually on the cpu(s) at that time.  Not what processes are or were on the process during the 5 seconds between refreshes.

-Troy


----- Original Message -----
From: Susie White <swhite at currenex.com>
Date: Tuesday, October 31, 2006 9:31 am
Subject: top output:  8 cpus busy in user-mode activities,	6 processes running
To: redhat-list at redhat.com

> Can you give me some insights about how we can have a case of 
> more busy cpus than users on the run queue or waiting for the 
> run queue.  Below is a point in time snap shot using 
> 'top'.  We have 8 cpus, all with user-mode activity.  
> And yet we have 6 processes in an R or S state.  All the 
> rest are in SW state.  Any speculation is welcome.  
> 
> We are running this version of linux:  2.4.21-32.0.1.ELsmp 
> #1 SMP Tue May 17 17:52:23 EDT 2005 i686 i686 i386 GNU/Linux
> 
> Thanks!
> 
> 
>  05:10:01  up 24 days,  5:58,  3 
> users,  load average: 3.50, 2.24, 1.33
> 1061 processes: 1060 sleeping, 1 running, 0 zombie, 0 stopped
> CPU states:  cpu    user    
> nice  system    irq  softirq  
> iowait    idle
>            
> total   21.6%    0.0%   
> 43.2%   0.0%     
> 0.8%    9.6%  724.0%
>            
> cpu00    0.9%    
> 0.0%    3.6%   
> 0.0%     0.0%    
> 0.0%   95.4%
>            
> cpu01    2.7%    
> 0.0%    7.2%   
> 0.0%     0.0%    
> 0.0%   90.0%
>            
> cpu02    7.2%    
> 0.0%    0.9%   
> 0.0%     0.0%    
> 5.4%   86.4%
>            
> cpu03    3.6%    
> 0.0%    4.5%   
> 0.0%     0.0%    
> 4.5%   87.3%
>            
> cpu04    1.8%    
> 0.0%    3.6%   
> 0.0%     0.9%    
> 0.0%   93.6%
>            
> cpu05    1.8%    
> 0.0%    8.1%   
> 0.0%     0.0%    
> 0.0%   90.0%
>            
> cpu06    1.8%    
> 0.0%    6.3%   
> 0.0%     0.0%    
> 0.0%   91.8%
>            
> cpu07    1.8%    
> 0.0%    9.0%   
> 0.0%     0.0%    
> 0.0%   89.0%
> Mem:  15887700k av, 14688888k used, 1198812k 
> free,       0k shrd,   
> 75228k buff
>                    10974816k actv, 2098712k in_d,  244572k in_c
> Swap: 12582712k av,  128796k used, 12453916k 
> free                 12403560k cached
> 
>   PID USER     PRI  NI  
> SIZE  RSS SHARE STAT %CPU %MEM   TIME CPU COMMAND
>  9477 oracle    25   0  1944 
> 1944   788 R     9.9  
> 0.0   0:00   7 top
>  1937 root      16   
> 0  1204 1076   692 S     
> 7.2  0.0 328:13   2 hpasmd
>  9531 oracle    25   0 14208  
> 13M 12596 S     4.5  0.0   
> 0:00   3 oracle
> 25749 oracle    15   0 14200  
> 13M  8584 S     2.7  
> 0.0   0:06   6 oracle
>     1 root      
> 25   0   520  520   460 
> S     0.9  0.0 190:19   0 init
> 25741 oracle    15   0 25132  24M 
> 21952 S     0.9  0.1   
> 4:38   3 oracle
>     2 root      
> RT   0     0    
> 0     0 SW    0.0  
> 0.0   0:00   0 migration/0
>     3 root      
> RT   0     0    
> 0     0 SW    0.0  
> 0.0   0:00   1 migration/1
>     4 root      
> RT   0     0    
> 0     0 SW    0.0  
> 0.0   0:00   2 migration/2
>     5 root      
> RT   0     0    
> 0     0 SW    0.0  
> 0.0   0:00   3 migration/3
>     6 root      
> RT   0     0    
> 0     0 SW    0.0  
> 0.0   0:00   4 migration/4
>     7 root      
> RT   0     0    
> 0     0 SW    0.0  
> 0.0   0:00   5 migration/5
>     8 root      
> RT   0     0    
> 0     0 SW    0.0  
> 0.0   0:00   6 migration/6
>     9 root      
> RT   0     0    
> 0     0 SW    0.0  
> 0.0   0:00   7 migration/7
> 
> 
> 
> 
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 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Troy Knabe
Senior Systems Administrator
Computing and Information Services
4J School District
knabe at 4j.lane.edu
Ph: 541.687.3587
Cell: 541.968.0780