33 lines
589 B
C
33 lines
589 B
C
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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int main(int argc, char * argv[]) {
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if (argc < 2) return 1;
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int fd = open(argv[1],O_RDONLY);
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if (fd < 0) {
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fprintf(stderr, "open: %d\n", fd);
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return 2;
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}
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uint64_t stats[4] = {-1};
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long res = ioctl(fd, 0x2A01234UL, &stats);
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if (res < 0) {
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fprintf(stderr, "ioctl: %ld\n", res);
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return 3;
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}
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fprintf(stderr, "hits:\t%zu\n", stats[0]);
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fprintf(stderr, "misses:\t%zu\n", stats[1]);
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fprintf(stderr, "evicts:\t%zu\n", stats[2]);
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fprintf(stderr, "writes:\t%zu\n", stats[3]);
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return 0;
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}
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