The Speed of Time
Brendan Gregg
SEPTEMBER 25, 2021
Measuring the speed of time Is there already a microbenchmark for os::javaTimeMillis()? As for tracesys: I investigated the overhead for other syscalls and found it to be negligible, and before I returned to work on it further the kernel code paths changed and it was no longer present in the stacks. Try changing the kernel clocksource.
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