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timer

Run Example
(%i1)? timer;

 -- Function: timer (<f_1>, ..., <f_n>)
 -- Function: timer (all)
 -- Function: timer ()
     Given functions <f_1>, ..., <f_n>, `timer' puts each one on the
     list of functions for which timing statistics are collected.
     `timer(f)$ timer(g)$' puts `f' and then `g' onto the list; the
     list accumulates from one call to the next.

     `timer(all)' puts all user-defined functions (as named by the
     global variable `functions') on the list of timed functions.

     With no arguments, `timer' returns the list of timed functions.

     Maxima records how much time is spent executing each function on
     the list of timed functions.  `timer_info' returns the timing
     statistics, including the average time elapsed per function call,
     the number of calls, and the total time elapsed.  `untimer'
     removes functions from the list of timed functions.

     `timer' quotes its arguments.  `f(x) := x^2$ g:f$ timer(g)$' does
     not put `f' on the timer list.

     If `trace(f)' is in effect, then `timer(f)' has no effect; `trace'
     and `timer' cannot both be in effect at the same time.

     See also `timer_devalue'.


  There are also some inexact matches for `timer'.
  Try `?? timer' to see them.

(%o1)                                true
(%i2) 
Run Example
timer:true;
(%o1)                                true
(%i2) eq1:x*4+y-2=y;
(%o2)                           y + 4 x - 2 = y
(%i3) eq2:x+2=y;
(%o3)                              x + 2 = y
(%i4) linsolve([eq1,eq2],[x,y]);
                                     1      5
(%o4)                           [x = -, y = -]
                                     2      2
(%i5) timer(aLL);
trace: aLL has no functional properties.
(%o5)                                 []
(%i6) 
Run Example
timer();
(%o1)                                 []
(%i2) 

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Help for Timer