Date: Thu, 07 Mar 2002 19:33:10 +0100 From: "Rogier R. Mulhuijzen" <drwilco@drwilco.net> To: Mike Silbersack <silby@silby.com>, Tom <bifrost@minions.com> Cc: Dimitar Peikov <mitko@rila.bg>, cjp <cjp@sandstorm.net>, <freebsd-hackers@FreeBSD.ORG> Subject: Re: Swapping performance Message-ID: <5.1.0.14.0.20020307193205.01c3b0f0@mail.drwilco.net> In-Reply-To: <20020307120940.E2778-100000@patrocles.silby.com> References: <20020307095452.D18855-100000@frond.minions.com>
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>Once Dimitar posts his test program, we'll be able to generate a more
>clear picture about what's really happening. Until then, please control
>the ranting.
Am I the only one who saw that he attached it to his 1st mail?
Here you go:
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#define MALLOC_SIZE 1024*1024*256
int main(int argc, char **argv) {
char *ptr;
int i, i_count;
int j;
ptr = (char *) malloc(MALLOC_SIZE);
bzero(ptr, MALLOC_SIZE);
i_count = MALLOC_SIZE / 16;
fprintf(stderr, "*");
for (i = 0; i < i_count; i ++) {
ptr[i >> 4] = ptr[(i >> 3) + 1]++;
}
fprintf(stderr, "#");
for (j = 0; j < i_count; j ++) {
ptr[j << 4] = ptr[(j >> 3) + 1]++;
}
free(ptr);
return 0;
}
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