Commits on Nov 8, 2020

1. test: fix races in test-performance-eventlooputil …

   Fix two races in test-performance-eventlooputil resulting in a flaky
   test.
   
   elu1 was capture after start time t from spin look. If OS descides to
   reschedule the process after capturing t but before getting elu for
   >=50ms the spin loop is actually a nop. elu1 doesn't show this and as
   a result elut3 = eventLoopUtilization(elu1) results in
   elu3.active === 0.
   Moving capturing of t after capturing t, just before the spin look
   avoids this.
   
   Similar if OS decides to shedule a different process between getting
   the total elu from start and the diff elu showing the spin loop the
   check to verify that total active time is long then the spin loop
   fails.
   Exchanging these statements avoids this race.

   

   Flarna committed Nov 8, 2020
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