NYCJUG/2006-04-11/WaitingForShellCommandToFinish

Some timings on different methods of invoking a shell command and waiting for it to finish before proceeding.

   6!:2 'tmshl=. testShellWaitGapTask 10'
54.895768
   tmshl
 1 0.90646684
 2   2.045727
 3   3.004945
…
9  8.9784859
10  9.9684722
   $tmshl=. tmshl,testShellWaitGapTask 10 [ tmshl=. tmshl,testShellWaitGap...
10 10 2
   [('C:\amisc\J\NYCJUG\200604\') fileVar 'tmshl'    NB. Save these timings and get the others.
   [(<'C:\amisc\J\NYCJUG\200602\') unfileVar_WS_&.> 'tmwts';'tmwe'
   $&.>tmwts;tmwe
+-------+-------+
|10 10 2|10 10 2|
+-------+-------+
   [(<'C:\amisc\J\NYCJUG\200603\') unfileVar_WS_&.> <'tmtsk'
   >,&.>}."1&.>mean &.>tmwe;tmwts;tmtsk;tmshl
1.5979812 2.2556814 3.2297579 3.7779361 5.7840476 6.7776504 6.8326559 7.6...
1.0231155 2.0238059 3.0120209 3.9767511 4.9960696 6.0108432 7.0526843 8.0...
1.0625265 2.0060558 2.9993423  4.035198 4.9880274  6.006053 6.9974078 8.0...
1.0447916 1.9385369 2.9957357 3.9990385 5.0200492 6.0015234 6.9776958 7.9...

   'key tmwe tmwts tmtsk tmshl' plot >,&.>}."1&.>mean &.>tmwe;tmwts;tmtsk;tmshl
    saveBMPFl dd,'meanTimings.bmp'

   'key tmwe tmwts tmtsk tmshl' plot >,&.>}."1&.>stddev &.>tmwe;tmwts;tmt...

   6!:2 'tmshl60=. testShellWaitGapTask 60'
1776.592
   tmshl60
 1 6.1197639
 2 1.8560169
 3 3.0398683
 4  3.988757
 5 4.9929768
...
58 57.982919
59 59.085524
60 1.3296317
   mean -/|:tmshl60
0.89565196
   plot /:~}.}:-/|:tmshl60
   saveBMPFl dd,'diffsTimings.bmp'