Differences

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--- howto:time [2012/03/14 12:58] – schroeter
+++ user_guide:howto:time [2019/01/25 13:40] – ↷ Page moved from howto:time to user_guide:howto:time oroehrig
@@ Line 1: / Line 1: @@
 ====== Measure execution time ======
-The benefit of using a standard programming language such as Perl is that one can use standard libraries for basic needs. Here is an example showing how to benchmark two different convex hull algorithms/codes on the same example.
+The benefit of using a standard programming language such as Perl is that one can use standard libraries for basic needs. For example, one can measure the runtime/execution time of a sequence of commands. Here is an example showing how to benchmark two different convex hull algorithms/codes on the same example.
 <code>
 use Benchmark qw(:all);
@@ Line 7: / Line 7: @@
 $r=rand_sphere(3,1000,seed=>1); $t=timeit(1,'prefer_now("beneath_beyond");$r->FACETS;'); print timestr($t);
 </code>
-This code does not work in a [[scripting:start|script]] file (.pl) because of polymake's modifications to Perl. You rather want to use something like this.
+Note that if timing a user function, you have to provide the application your function lives in:
+<code>
+polytope > $t=timeit(1,'Polymake::polytope::rand_box(10,2000,1);');
+</code>
+The above code does not work in a [[scripting:start|script]] file (.pl) because of polymake's modifications to Perl. You rather want to use something like this.
 <code>
 use Benchmark qw(:all);