topic Re: Measure CPU-time in Administration and Deployment

Measure CPU-time

AndersS — Wed, 17 May 2023 13:07:58 GMT

Hi! Is there any good way to measure the cpu-time for a SAS program?

At present I look in the SAS log and add together

user cpu-time and system cpu-time

/Best Regards AndersS

Re: Measure CPU-time

MargaretC — Wed, 17 May 2023 13:15:47 GMT

That is the correct way to do it.

Re: Measure CPU-time

Kurt_Bremser — Wed, 17 May 2023 13:17:08 GMT

If it is a batch program, wrap the sas commandline in the time command:

time /path_to_sas/sas -log /logpath/program.log -sysin /progpath/program.sas

Re: Measure CPU-time

SASKiwi — Wed, 17 May 2023 20:13:27 GMT

With batch SAS logs a total real and CPU time for the whole job is printed at the end.

Re: Measure CPU-time

Tom — Wed, 17 May 2023 22:05:01 GMT

@SASKiwi wrote:

With batch SAS logs a total real and CPU time for the whole job is printed at the end.

Exactly:

>tail -n5  sassy.log
NOTE: SAS Institute Inc., SAS Campus Drive, Cary, NC USA 27513-2414
NOTE: The SAS System used:
      real time           1:17.30
      cpu time            6.09 seconds

Re: Measure CPU-time

AndersS — Thu, 18 May 2023 07:26:40 GMT

Hi! I use "SAS on Demand for Academics". Many thanks! / AndersS

Re: Measure CPU-time

AndersS — Thu, 18 May 2023 07:27:10 GMT

Hi! I use "SAS on Demand for Academics". Many thanks! / AndersS

Re: Measure CPU-time

AhmedAl_Attar — Thu, 18 May 2023 11:02:24 GMT

Hi @AndersS

I know you marked this as solved, but if you wanted to have more elaborate measurements displayed in the log, you can use

options fullstimer;

https://documentation.sas.com/doc/en/pgmsascdc/9.4_3.5/hostunx/n0k7vnqt9p9o91n1jsl23a08l13e.htm

Re: Measure CPU-time

Kurt_Bremser — Thu, 18 May 2023 11:13:42 GMT

System CPU time is the time used by kernel calls (like the very basic read() or write() functions), while user CPU is the time spent in the non-system code. It is therefore correct to add both numbers up to get the whole CPU used by a process (or a SAS program step).

Re: Measure CPU-time

AndersS — Thu, 18 May 2023 11:39:38 GMT

Many thanks! /Br AndersS

Re: Measure CPU-time

AndersS — Thu, 18 May 2023 11:44:04 GMT

Many thanks! I am working a a FAST method for quantiles on LARGE amounts of data. / BR AndersS