Crate tick_counter

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Expand description

Hardware-based tick counters for high-precision benchmarks

  • x86_64 - executes RDTSC CPU instruction to read the time-stamp counter.
  • AArch64 - reads value of the CNTVCT_EL0 counter-timer register.

Basic usage

 let start = tick_counter::start();
 // ... lines of code to benchmark
 let elapsed_ticks = tick_counter::stop() - start;
 println!("Number of elapsed ticks: {}", elapsed_ticks);

Basic usage with helper

 use tick_counter::TickCounter;
 
 let tick_counter = TickCounter::current();
 // ... lines of code to benchmark
 let elapsed_ticks = tick_counter.elapsed();
 println!("Number of elapsed ticks: {}", elapsed_ticks);

Structs

Enums

Functions

  • frequency
    Returns a frequency of tick counter in hertz (Hz)
  • precision_nanoseconds
    Returns a precision of tick counters in nanoseconds
  • start
    Returns a current value of the tick counter to use as a staring point
  • stop
    Returns a current value of the tick counter to use as a stopping point
  • x86_64_measure_frequency
    Returns a measured value of tick counter frequency on x86_64 architecture in hertz (Hz)
  • x86_64_processor_id
    Returns a tick counter and CPUID values based on Intel CPU’s RDTSCP instruction
  • x86_64_tick_counter
    Returns a current value of the tick counter based on Intel CPU’s RDTSC instruction