src/hotspot/cpu/x86/rdtsc_x86.cpp

*** 60,70 ****
      start = os::elapsed_counter();
      OrderAccess::fence();
      fstart = os::rdtsc();
  
      // use sleep to prevent compiler from optimizing
!     os::sleep(JavaThread::current(), FT_SLEEP_MILLISECS);
  
      end = os::elapsed_counter();
      OrderAccess::fence();
      fend = os::rdtsc();
  
--- 60,70 ----
      start = os::elapsed_counter();
      OrderAccess::fence();
      fstart = os::rdtsc();
  
      // use sleep to prevent compiler from optimizing
!     JavaThread::current()->sleep(FT_SLEEP_MILLISECS);
  
      end = os::elapsed_counter();
      OrderAccess::fence();
      fend = os::rdtsc();