62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/resource.h>
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// Dummy function for system malloc
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void hak_tiny_magazine_flush_all(void) { /* no-op */ }
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void battle_test(int n, const char* label) {
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struct rusage usage;
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void** ptrs = malloc(n * sizeof(void*));
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printf("\n=== %s Test (n=%d) ===\n", label, n);
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// Allocate
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for (int i = 0; i < n; i++) {
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ptrs[i] = malloc(16);
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}
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// Measure at peak
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getrusage(RUSAGE_SELF, &usage);
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float data_mb = (n * 16) / 1024.0 / 1024.0;
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float rss_mb = usage.ru_maxrss / 1024.0;
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float overhead = (rss_mb - data_mb) / data_mb * 100;
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printf("Peak: %.1f MB data → %.1f MB RSS (%.0f%% overhead)\n",
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data_mb, rss_mb, overhead);
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// Free all
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for (int i = 0; i < n; i++) {
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free(ptrs[i]);
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}
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// Flush (no-op for system malloc)
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hak_tiny_magazine_flush_all();
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// Measure after free
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getrusage(RUSAGE_SELF, &usage);
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float rss_after = usage.ru_maxrss / 1024.0;
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printf("After: %.1f MB RSS (%.1f MB freed)\n",
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rss_after, rss_mb - rss_after);
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free(ptrs);
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}
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int main() {
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printf("╔════════════════════════════════════════╗\n");
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printf("║ System malloc / mimalloc ║\n");
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printf("╚════════════════════════════════════════╝\n");
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battle_test(100000, "100K");
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battle_test(500000, "500K");
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battle_test(1000000, "1M");
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battle_test(2000000, "2M");
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battle_test(5000000, "5M");
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printf("\n╔════════════════════════════════════════╗\n");
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printf("║ BATTLE COMPLETE! ║\n");
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printf("╚════════════════════════════════════════╝\n");
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return 0;
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}
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