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DateFri, 10 Jan 1997 21:45:33 -0800 (PST)
FromRob Glover <>
SubjectRe: Strange CPU usage times with SMP
I don't know if this will rememdy the problem, but you should upgrade your
libc to 5.4.17 immediately, if not sooner ;>  aside from POSSIBLY
remedying this problem, it fixes some security bugs, and a lot of other
stuff. :>
						-Rob

On Fri, 10 Jan 1997, Chris Griffin wrote:

> I have been running some fairly demainding programs on my Dual PPro 200 
> linux box lately and it is great!  I am using calles to times() to try to 
> get CPU time usage so I can benchmark it against some other platforms I 
> work on.  The only problem is that when SMP is enabled I get some fairly 
> strange times.  Sometimes all the time will be system time, other times 
> it will all be user time, and as you might have guessed, all combinations 
> in-between.  If I run this program 5 times, I will get 5 different 
> combinations, but they will always add up to the same number Even stranger, 
> when I run 2 programs at once, and then look at the output with top, the 
> USER CPU is 99% and the system CPU is at 101%.  I assume this has to do 
> with the fact that I have 2 processors TICKing away.  Is this a bug in 
> the kernel, C libraries, or just an eventuality that hasn't been taken 
> care of yet?  In the mean time, does anyone know a way to fix this 
> behavior?  I am using gcc2.7.2, libc5.3.12, procps 1.01 and linux 2.0.27.
> 
> 						Thanks a lot!
> 						    Chris
> 
> 


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