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Use wall time in throughput test #91

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merged 2 commits into from
Dec 21, 2023
Merged

Use wall time in throughput test #91

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b881c7a
fix: use wall time in throughput test
jean-roland Dec 20, 2023
cc3c5ec
fix: type portability
jean-roland Dec 20, 2023
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28 changes: 15 additions & 13 deletions examples/universal/z_sub_thr.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,7 @@
// ZettaScale Zenoh Team, <[email protected]>
//
#include <stdio.h>
#include <time.h>
#include <chrono>

#include "../getargs.h"
#include "zenoh.hxx"
Expand All @@ -23,35 +23,37 @@ using namespace zenoh;
struct Stats {
volatile unsigned long count = 0;
volatile unsigned long finished_rounds = 0;
volatile clock_t start = 0;
volatile clock_t stop = 0;
volatile clock_t end = 0;
volatile clock_t first_start = 0;
std::chrono::steady_clock::time_point start = {};
std::chrono::steady_clock::time_point first_start = {};
std::chrono::steady_clock::time_point end = {};

void operator()(const Sample &) {
if (count == 0) {
start = clock();
if (!first_start) {
start = std::chrono::steady_clock::now();
if (first_start == std::chrono::steady_clock::time_point()) {
first_start = start;
}
count++;
} else if (count < N) {
count++;
} else {
stop = clock();
finished_rounds++;
printf("%f msg/s\n", N * (double)CLOCKS_PER_SEC / (double)(stop - start));
auto elapsed_us =
std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::steady_clock::now() - start).count();
std::cout << static_cast<double>(N) * 1000000.0 / static_cast<double>(elapsed_us) << " msg/s\n";
count = 0;
}
}

void operator()() { end = clock(); }
void operator()() { end = std::chrono::steady_clock::now(); }

void print() const {
const double elapsed = (double)(end - first_start) / (double)CLOCKS_PER_SEC;
auto elapsed_s =
static_cast<double>(std::chrono::duration_cast<std::chrono::microseconds>(end - first_start).count()) /
1000000.0;
const unsigned long sent_messages = N * finished_rounds + count;
printf("Sent %ld messages over %f seconds (%f msg/s)\n", sent_messages, elapsed,
(double)sent_messages / elapsed);
std::cout << "Sent " << sent_messages << " messages over " << elapsed_s << " seconds ("
<< static_cast<double>(sent_messages) / elapsed_s << " msg/s)\n";
}
};

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