| 1 | |
| 2 | #include <stdio.h> |
| 3 | #include <unistd.h> |
| 4 | #include <asm/timex.h> |
| 5 | |
| 6 | #define LTT_TRACE |
| 7 | #define LTT_TRACE_FAST |
| 8 | #include <ltt/ltt-facility-user_tests.h> |
| 9 | |
| 10 | #define max(a,b) ((a)>(b)?(a):(b)) |
| 11 | #define min(a,b) ((a)<(b)?(a):(b)) |
| 12 | |
| 13 | /* Event logged : 4 bytes + 20 bytes header = 24 bytes. Let's use 1MB of |
| 14 | * buffers. 1MB / 24bytes = 43690. So, if we write 20000 event, we should not |
| 15 | * lose events. Check event lost count after tests. */ |
| 16 | |
| 17 | #define NR_LOOPS 20000 |
| 18 | |
| 19 | typedef unsigned long long cycles_t; |
| 20 | |
| 21 | int main(int argc, char **argv) |
| 22 | { |
| 23 | unsigned int i; |
| 24 | cycles_t time1, time2, time; |
| 25 | cycles_t max_time = 0, min_time = 18446744073709551615ULL; /* (2^64)-1 */ |
| 26 | cycles_t tot_time = 0; |
| 27 | |
| 28 | for(i=0; i<NR_LOOPS; i++) { |
| 29 | time1 = get_cycles(); |
| 30 | trace_user_tests_write_4bytes(5000); |
| 31 | time2 = get_cycles(); |
| 32 | time = time2 - time1; |
| 33 | max_time = max(max_time, time); |
| 34 | min_time = min(min_time, time); |
| 35 | tot_time += time; |
| 36 | } |
| 37 | |
| 38 | printf("test results : time per probe (in cycles)\n"); |
| 39 | printf("number of loops : %d\n", NR_LOOPS); |
| 40 | printf("total time : %llu\n", tot_time); |
| 41 | printf("average time : %g\n", tot_time/(double)NR_LOOPS); |
| 42 | printf("min : %llu\n", min_time); |
| 43 | printf("max : %llu\n", max_time); |
| 44 | |
| 45 | return 0; |
| 46 | } |
| 47 | |