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rework options, benchmark mode

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This commit is contained in:
Kent Overstreet 2010-07-03 00:15:06 -07:00
parent 87cc300dbb
commit 8dc5698fe9
1 changed files with 49 additions and 28 deletions
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77
bcache-test.c
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@ -120,52 +120,72 @@ void aio_loop(int nr)
}
void usage()
{
exit(EXIT_FAILURE);
}
int main(int argc, char **argv)
{
bool walk = false, randsize = false, verbose = false, csum = false, destructive = false, log = false;
int fd1, fd2 = 0, logfd, direct = 0, nbytes = 4096, j;
unsigned long size, i, offset = 0, done = 0, unique = 0;
int fd1, fd2 = 0, logfd, direct = 0, nbytes = 4096, j, o;
unsigned long size, i, offset = 0, done = 0, unique = 0, benchmark = 0;
void *buf1 = NULL, *buf2 = NULL;
struct pagestuff *pages, *p;
unsigned char c[16];
char logbuf[1 << 21];
time_t last_printed = 0;
extern char *optarg;
RC4_KEY writedata;
RC4_set_key(&writedata, 16, bcache_magic);
for (i = 1; i < argc; i++) {
if (strcmp(argv[i], "direct") == 0)
while ((o = getopt(argc, argv, "dwvscwlb:")) != EOF)
switch (o) {
case 'd':
direct = O_DIRECT;
else if (strcmp(argv[i], "walk") == 0)
walk = true;
else if (strcmp(argv[i], "verbose") == 0)
verbose = true;
else if (strcmp(argv[i], "size") == 0)
randsize = true;
else if (strcmp(argv[i], "csum") == 0)
csum = true;
else if (strcmp(argv[i], "write") == 0)
destructive = true;
else if (strcmp(argv[i], "log") == 0)
log = true;
else
break;
}
case 'n':
walk = true;
break;
case 'v':
verbose = true;
break;
case 's':
randsize = true;
break;
case 'c':
csum = true;
break;
case 'w':
destructive = true;
break;
case 'l':
log = true;
break;
case 'b':
benchmark = atol(optarg);
break;
default:
usage();
}
if (i + 1 > argc) {
argv += optind;
argc -= optind;
if (argc < 1) {
printf("Please enter a device to test\n");
exit(EXIT_FAILURE);
}
if (i + 2 > argc && !csum) {
if (!csum && !benchmark && argc < 2) {
printf("Please enter a device to compare against\n");
exit(EXIT_FAILURE);
}
fd1 = open(argv[i], (destructive ? O_RDWR : O_RDONLY)|direct);
if (!csum)
fd2 = open(argv[i + 1], (destructive ? O_RDWR : O_RDONLY)|direct);
fd1 = open(argv[0], (destructive ? O_RDWR : O_RDONLY)|direct);
if (!csum && !benchmark)
fd2 = open(argv[1], (destructive ? O_RDWR : O_RDONLY)|direct);
if (fd1 == -1 || fd2 == -1) {
perror("Error opening device");
@ -173,7 +193,7 @@ int main(int argc, char **argv)
}
size = getblocks(fd1);
if (!csum)
if (!csum && !benchmark)
size = MIN(size, getblocks(fd2));
size = size / 8 - 16;
@ -197,7 +217,7 @@ int main(int argc, char **argv)
klogctl(8, 0, 6);
}
for (i = 0;; i++) {
for (i = 0; !benchmark || i < benchmark; i++) {
bool writing = destructive && (i & 1);
nbytes = randsize ? drand48() * 16 + 1 : 1;
nbytes <<= 12;
@ -224,7 +244,7 @@ print: printf("Loop %6li offset %9li sectors %3i, %6lu mb done, %6lu mb unique
if (!writing)
Pread(fd1, buf1, nbytes, offset);
if (!writing && !csum)
if (!writing && !csum && !benchmark)
Pread(fd2, buf2, nbytes, offset);
for (j = 0; j < nbytes; j += 4096) {
@ -242,7 +262,7 @@ print: printf("Loop %6li offset %9li sectors %3i, %6lu mb done, %6lu mb unique
memcpy(&p->csum[0], c, 16);
} else if (memcmp(&p->csum[0], c, 16))
goto bad;
} else if (!writing &&
} else if (!writing && !benchmark &&
memcmp(buf1 + j,
buf2 + j,
4096))
@ -255,9 +275,10 @@ print: printf("Loop %6li offset %9li sectors %3i, %6lu mb done, %6lu mb unique
}
if (writing)
Pwrite(fd1, buf1, nbytes, offset);
if (writing && !csum)
if (writing && !csum && !benchmark)
Pwrite(fd2, buf2, nbytes, offset);
}
exit(EXIT_SUCCESS);
err:
perror("IO error");
if (log)