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/*
* Migration test program
*
* (C) 2007 Silicon Graphics, Inc. Christoph Lameter <clameter@sgi.com>
*
*/
#include <stdio.h>
#include <stdlib.h>
#include "numa.h"
#include "numaif.h"
#include <time.h>
#include <errno.h>
#include <malloc.h>
#include <unistd.h>
#include "util.h"
char *memory;
unsigned long pages = 1000;
unsigned long pagesize;
const char *optstr = "hvp:";
char *cmd;
int verbose;
struct timespec start,end;
void usage(void)
{
printf("usage %s [-p pages] [-h] [-v] from-nodes to-nodes\n", cmd);
printf(" from and to nodes may specified in form N or N-N\n");
printf(" -p pages number of pages to try (defaults to %ld)\n",
pages);
printf(" -v verbose\n");
printf(" -h usage\n");
exit(1);
}
void displaymap(void)
{
FILE *f = fopen("/proc/self/numa_maps","r");
if (!f) {
printf("/proc/self/numa_maps not accessible.\n");
exit(1);
}
while (!feof(f))
{
char buffer[2000];
if (!fgets(buffer, sizeof(buffer), f))
break;
if (!strstr(buffer, "bind"))
continue ;
printf("%s", buffer);
}
fclose(f);
}
int main(int argc, char *argv[])
{
char *p;
int option;
struct timespec result;
unsigned long bytes;
double duration, mbytes;
struct bitmask *from;
struct bitmask *to;
pagesize = getpagesize();
/* Command line processing */
opterr = 1;
cmd = argv[0];
while ((option = getopt(argc, argv, optstr)) != EOF)
switch (option) {
case 'h' :
case '?' :
usage();
case 'v' :
verbose++;
break;
case 'p' :
pages = strtoul(optarg, &p, 0);
if (p == optarg || *p)
usage();
break;
}
if (!argv[optind])
usage();
if (verbose > 1)
printf("numa_max_node = %d\n", numa_max_node());
numa_exit_on_error = 1;
from = numa_parse_nodestring(argv[optind]);
if (!from) {
printf ("<%s> is invalid\n", argv[optind]);
exit(1);
}
if (errno) {
perror("from mask");
exit(1);
}
if (verbose)
printmask("From", from);
if (!argv[optind+1])
usage();
to = numa_parse_nodestring(argv[optind+1]);
if (!to) {
printf ("<%s> is invalid\n", argv[optind+1]);
exit(1);
}
if (errno) {
perror("to mask");
exit(1);
}
if (verbose)
printmask("To", to);
bytes = pages * pagesize;
if (verbose)
printf("Allocating %lu pages of %lu bytes of memory\n",
pages, pagesize);
memory = memalign(pagesize, bytes);
if (!memory) {
printf("Out of Memory\n");
exit(2);
}
if (mbind(memory, bytes, MPOL_BIND, from->maskp, from->size, 0) < 0)
numa_error("mbind");
if (verbose)
printf("Dirtying memory....\n");
for (p = memory; p <= memory + bytes; p += pagesize)
*p = 1;
if (verbose)
printf("Starting test\n");
displaymap();
clock_gettime(CLOCK_REALTIME, &start);
if (mbind(memory, bytes, MPOL_BIND, to->maskp, to->size, MPOL_MF_MOVE) <0)
numa_error("memory move");
clock_gettime(CLOCK_REALTIME, &end);
displaymap();
result.tv_sec = end.tv_sec - start.tv_sec;
result.tv_nsec = end.tv_nsec - start.tv_nsec;
if (result.tv_nsec < 0) {
result.tv_sec--;
result.tv_nsec += 1000000000;
}
if (result.tv_nsec >= 1000000000) {
result.tv_sec++;
result.tv_nsec -= 1000000000;
}
duration = result.tv_sec + result.tv_nsec / 1000000000.0;
mbytes = bytes / (1024*1024.0);
printf("%1.1f Mbyte migrated in %1.2f secs. %3.1f Mbytes/second\n",
mbytes,
duration,
mbytes / duration);
return 0;
}
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