The Speed of Time
Brendan Gregg
SEPTEMBER 25, 2021
What about short-lived processes, like a service restarting in a loop? As a Xen guest, this profile was gathered using perf(1) and the kernel's software cpu-clock soft interrupts, not the hardware NMI. Measuring the speed of time Is there already a microbenchmark for os::javaTimeMillis()? These can be invisible to top(8).
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