107 lines
1.9 KiB
C
107 lines
1.9 KiB
C
#include <stdio.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <time.h>
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#include <sys/stat.h>
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#include <sys/fcntl.h>
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#include <fs/procfs/procfs.h>
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#include <syslog.h>
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#include <sys/sysmp.h>
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#include <sys/resource.h>
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int gen, fd, thresh;
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#define ALLOC_SIZE 0x10000
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#define ALLOC_TABLE_SIZE 256
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char *alloc_table[ALLOC_TABLE_SIZE];
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void
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cache_err_die(char *x)
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{
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syslog(LOG_ALERT, x);
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exit(-1);
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}
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do_accesses(int cpu)
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{
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char *tmp;
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int i, j;
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int old_cnt, bad_cnt;
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if (sysmp(MP_MUSTRUN, cpu) == -1) {
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printf("could not run on cpu %d\n", cpu);
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return -1;
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}
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for (i = 0; i < ALLOC_TABLE_SIZE; i++) {
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if (alloc_table[i] == NULL) break;
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for (j = 0; j < ALLOC_SIZE; j += 512) {
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*(volatile char *)(alloc_table[i] + j);
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*(volatile char *)(alloc_table[i] + j + 128);
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*(volatile char *)(alloc_table[i] + j + 256);
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*(volatile char *)(alloc_table[i] + j + 384);
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}
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}
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return 0;
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}
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main(int argc, char *argv[])
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{
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char file[32];
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int i;
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int error;
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int cpu = 0;
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int size = 0x200000;
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int numprocs;
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if (argc > 1)
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cpu = strtol(argv[1], NULL, 0);
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for (i = 0; i <= size / ALLOC_SIZE; i++) {
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if (i >= ALLOC_TABLE_SIZE) break;
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if ((alloc_table[i] = (char *)malloc(ALLOC_SIZE)) == NULL)
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cache_err_die("Unable to allocate memory for test");
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}
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openlog(argv[0], LOG_PID|LOG_CONS|LOG_PERROR|LOG_NDELAY, LOG_USER);
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syslog(LOG_INFO, "started. Cache size %x. Threshold %d",
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size, thresh);
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numprocs = sysmp(MP_NPROCS);
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if (numprocs == -1)
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cache_err_die("sysmp(MP_NPROCS) = -1!");
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if (setpriority(PRIO_PROCESS, getpid(), 20) < 0)
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perror("setprio");
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printf("%s Running scache tests on size %d (%x)\n", argv[0], size, size);
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sprintf(file, "/proc/%d", getpid());
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fd = open(file, O_RDWR);
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error = 1;
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while (1) {
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int i;
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int num_err;
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num_err = 0;
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for (i =0; i <2000; i++)
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do_accesses(cpu);
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exit(0);
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#if 0
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for (cpu = 0; cpu < numprocs; cpu++) {
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do_accesses(cpu);
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}
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sleep (300);
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#endif
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}
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}
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