profile

Arguments

function

A Scilab function.

prof

The execution information of function.

Description

These commands are used to profile a specific function within Scilab and get some execution information as Scilab values for further manipulation. Any Scilab function could be instrumented and function informations (static and after execution) are generated for each instrumented function independently. For more information on the prof value, see profileGetInfo.

The commands are used to setup and retrieve execution information. As the instrumentation information are accessible within Scilab you could define specific computation to report these numbers.

Basic example

// Function to be profiled
function x=foo(n)
  if n > 0 then
    x = 0;
    for k = 1:n
      s = svd(rand(n, n));
      x = x + s(1);
    end
  else
    x = [];
  end
endfunction

// Enables the profiling of the function
profileEnable(foo)

// Executes the function
foo(200);

// Returns the function profiling results
prof = profileGetInfo()

Basic example with a Scilab function

profileEnable(isempty)                 // instrument isempty()

isempty(1)                             // execute the function

prof = profileGetInfo()                // retrieve execution information

profileDisable(isempty)                // de-instrument isempty()

Display the 5th most executed lines

// instrument and execute as before
profileEnable(isempty);
for i=1:1e5; isempty(i); end
prof = profileGetInfo();
profileDisable(isempty);

// retrieve the function text
txt = mgetl(part(prof.FunctionTable.FileName, 1:($-3)) + "sci");
txt = txt(prof.FunctionTable.FirstLine:$);

// sort per execution time and display the corresponding lines
[B, k] = gsort(prof.LineCoverage(1)(:,2));
[string(k(1:5)) string(prof.LineCoverage(1)(k(1:5),2)), txt(k(1:5))]

See also

• profileEnable — Add instrumentation to a function, a library or all available functions
• profileDisable — Remove instrumentation from a function, a library or remove all instrumentation
• profileGetInfo — Retrieve instrumentation information as a Scilab value