Can someone explain as what is the difference between CPU% showed in top and in ps? I mean the way in which they are calculated. I can see each of these commands giving different numbers for the same process at the same instant.
Way Too Much Ubuntu
Can someone explain as what is the difference between CPU% showed in top and in ps? I mean the way in which they are calculated. I can see each of these commands giving different numbers for the same process at the same instant.
Ubuntu addict and loving it
They are two different programs running at different intervals of read.Originally Posted by ittiam
Way Too Much Ubuntu
And I would assume top samples at a higher rate. top always shows me low CPU% compared to ps and the difference is quite big. For the process I tested with top showed around 1% whereas ps showed around 20% and the value showed by ps was exactly the same for 5 minutes I monitored whereas top was fluctuating between 0-2%.
Why this big a difference? And how to interpret the CPU usage from ps compared to that of top?
Frothy Coffee!
top is realtime.
ps is the average CPU in an interval.
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