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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <stdio.h>
#include <stdlib.h>
#include "mozmemory.h"
/*
* Print the configured size classes which we can then use to update
* documentation.
*/
int main() {
jemalloc_stats_t stats;
const size_t num_bins = jemalloc_stats_num_bins();
const size_t MAX_NUM_BINS = 100;
if (num_bins > MAX_NUM_BINS) {
fprintf(stderr, "Exceeded maximum number of jemalloc stats bins");
return 1;
}
jemalloc_bin_stats_t bin_stats[MAX_NUM_BINS] = {{0}};
jemalloc_stats(&stats, bin_stats);
printf("\n");
printf("Parameters\n");
printf("----------\n\n");
printf("Page size: %5zu\n", stats.page_size);
printf("Chunk size: %5zuKiB\n", stats.chunksize / 1024);
printf("Quantum: %5zu\n", stats.quantum);
printf("Quantum max: %5zu\n", stats.quantum_max);
printf("Sub-page max: %5zu\n", stats.page_size / 2);
printf("Large max: %5zuKiB\n", stats.large_max / 1024);
printf("\n");
printf("Run layout for each bin size\n");
printf("----------------------------\n\n");
printf(" Size | Reg per run | Run size | Overhead\n");
printf("------|-------------|----------|----------\n");
for (unsigned i = 0; i < num_bins; i++) {
auto& bin = bin_stats[i];
if (bin.size) {
printf("%5zu | %11zu | %5zuKiB | %7.2f%%\n", bin.size,
bin.regions_per_run, bin.bytes_per_run / 1024,
float(bin.bytes_per_run - (bin.regions_per_run * bin.size)) *
100.0f / float(bin.regions_per_run * bin.size));
}
}
return EXIT_SUCCESS;
}
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