>First and foremost, I'm not sure why you cross-posted this on 3 separate

quoted text
>lists (testing, performance, and hardware).  You probably should have

>posted this on freebsd-questions, and if no response after a week or so,

>again on freebsd-stable (although you're using FreeBSD 6.2).

>It's generally shunned by the FreeBSD mailing list community to

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>cross-post to so many lists.  Just something to keep in mind for the

>future.

Thanks for this reminder. I am testing my hardware against FreeBSD, and I just want to reach those people under the said areas (testing, performance, hardware) with the hope to get speedy response. 
>> Then what should I use? I am interested in getting the detailed info to justify the %CPU idles and utilization.
>Of the entire machine?  You can see that in top's header:
>last pid: 84636;  load averages:  0.47,  0.14,  0.04 up 79+01:15:18  04:46:01

quoted text
>75 processes:  2 running, 70 sleeping, 3 stopped

>CPU: 28.6% user,  0.0% nice,  8.2% system,  0.0% interrupt, 63.3% idle

>Mem: 207M Active, 2433M Inact, 212M Wired, 91M Cache, 112M Buf, 57M Free

>Swap: 8192M Total, 228K Used, 8192M Free

>Regarding why you're adding up all the individual process statistics: I

quoted text
>can imagine they would vary a slight bit, but I cannot explain a 7%

>variance.  Someone with more knowledge will have to assist there.

Though the header could be conclusive, I should want the specific processes (or threads).

And come up with a list of breakdowns, like:
User (28.6%)

1. Program1 -- 20.0%

2. Program2 --  8.6%
System(8.2%)

1. SystemProcess1 -- X %

2. (and so on)         -- Y %
Then match this by adding up all individual processes statistics. And if I couldn't match, at least I could tell some factors that cause variance.

This variance has really struck my attention. When I run "top -SI", the result was:
last pid:  2746;  load averages:  0.20,  0.16,  0.10 up 0+00:07:38

15:54:26

125 processes: 12 running, 100 sleeping, 16 waiting

CPU states:

0.3% user,  0.0% nice,  6.4% system,  0.0% interrupt, 93.2% idle

Mem: 42M

Active, 18M Inact, 62M Wired, 20M Buf, 27G Free

Swap:
  PID USERNAME  THR PRI NICE   SIZE    RES STATE  C   TIME   WCPU

COMMAND

   17 root        1 171   52     0K    16K RUN    0   6:05 99.02%

idle: cpu0

   15 root        1 171   52     0K    16K CPU2   2   6:05 99.02%

idle: cpu2

   14 root        1 171   52     0K    16K CPU3   3   6:28 96.58%

idle: cpu3

   10 root        1 171   52     0K    16K CPU7   7   6:19 92.24%

idle: cpu7

   11 root        1 171   52     0K    16K CPU6   6   6:22 92.09%

idle: cpu6

   16 root        1 171   52     0K    16K CPU1   1   6:30 91.26%

idle: cpu1

   12 root        1 171   52     0K    16K CPU5   5   6:26 84.47%

idle: cpu5

   13 root        1 171   52     0K    16K CPU4   4   6:36 83.50%

idle: cpu4
The header says 12, but there were only 8 processes displayed. Sometimes it goes down to 10, but not 8.

Hope you can shed me more lights on this.
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