fix occasional op/time.t failure

test 2 uses far more sys than user time, so it's possible to burn
20 secs of wall time without an apparent increase in user time

p4raw-id: //depot/perl@29712

diff --git a/t/op/time.t b/t/op/time.t
index 330cc86..8b2f07d 100755 (executable)
--- a/t/op/time.t
+++ b/t/op/time.t
@@ -19,6 +19,7 @@ while (($now = time) == $beg) { sleep 1 }
 ok($now > $beg && $now - $beg < 10,             'very basic time test');
 
 for ($i = 0; $i < 1_000_000; $i++) {
+    for my $j (1..100) {}; # burn some user cycles
     ($nowuser, $nowsys) = times;
     $i = 2_000_000 if $nowuser > $beguser && ( $nowsys >= $begsys ||
                                             (!$nowsys && !$begsys));