ps command with dual CPU

[Pongthai]

Hi,

I would like to know the percentage of CPU that my program using. My
machine has dual CPU and I used ps command to find out the cpu usage.
However, I don't know whether the value of pcpu is the actual cpu
usage of my program or I need to multiply it by two for the actual cpu
usage.

Thanks for the answer.

Regards,
Lek

[TCS]

On Fri, 14 May 2004 01:36:48 -0700, "Michael Vilain <vilain@spamcop.net>" <> wrote:

>In article <4bf99b6f.0405132021.4c83b864@posting.google.com >,
> [email]pongthai@msn.com[/email] (Pongthai) wrote:

>> I would like to know the percentage of CPU that my program using. My
>> machine has dual CPU and I used ps command to find out the cpu usage.
>> However, I don't know whether the value of pcpu is the actual cpu
>> usage of my program or I need to multiply it by two for the actual cpu
>> usage.

>Unless your program is threaded, at most it will use only 1 CPU cycling
>between waiting for I/O, CPU, or paging. A single-threaded application
>cannot use both CPUs at once. Unless you re-write it to run using
>threads, you're out of luck.

Or the applications uses any resource that can be managed on the other CPU,
such as the file system, video graphics, etc.