How to read SAS Log CPU and real time read

[VVDR]

Hi All,

How I read SAS Log.

I see not much related posts on this question. I felt this as an important question and hence need your thoughts.

In the SAS logs we see CPU time and real time as below.

real time 21:24.17 --it means 21 minutes 24 seconds and 17 micro seconds

real time 15:23.08 --15 minutes 23 seconds and 08 micro seconds

real time 23:15.82 --23 minutes 15 seconds and 82 micro seconds

real time 1:23.13 --1 minute 23 seconds and 13 micro seconds
user cpu time 0.00 seconds --it gathers all CPU times and it is 0 seconds.

Please correct me if I am reading the log in the right way.

Cheers

[Tom]

17 MICRO seconds would by .017.  .17 is 17 hundredths of a second.

[VVDR]

Can you please correct me on the full statement.

Cheers

[Kurt_Bremser]

Decimal fractions are named like this:

• milli - a 1000th
• micro - millionth
• nano - 1000th of a millionth
• pico - 1000th of that
• femto
• atto

So 0.17 seconds are in fact 170 milliseconds. Otherwise, your readings are correct.

[VVDR]

So, I should read like this :

real time 21:24.17 --it means 21 minutes 24 seconds and 170 milliseconds ?

Thanks

[ChrisNZ · Accepted solution]

> 21:24.17 --it means 21 minutes 24 seconds and 170 milliseconds ?

Yes, since you choose to go 3 digits right of the dot by using milliseconds (1e-3 seconds).

Or 21:24.17 --it means 21 minutes 24 seconds and 17 centiseconds if you want

Or 21:24.17 --it means 21 minutes 24 seconds and 1.7 deciseconds though no one uses these units.

It's all in the metric system. Magic!