1 #ifndef FIO_IDLETIME_H 2 #define FIO_IDLETIME_H 3 4 #include "fio.h" 5 #include "lib/output_buffer.h" 6 7 #define CALIBRATE_RUNS 10 8 #define CALIBRATE_SCALE 1000 9 #define MAX_CPU_STR_LEN 32 10 11 enum { 12 IDLE_PROF_OPT_NONE, 13 IDLE_PROF_OPT_CALI, /* calibration only */ 14 IDLE_PROF_OPT_SYSTEM, 15 IDLE_PROF_OPT_PERCPU 16 }; 17 18 enum { 19 IDLE_PROF_STATUS_OK, 20 IDLE_PROF_STATUS_CALI_STOP, 21 IDLE_PROF_STATUS_PROF_STOP, 22 IDLE_PROF_STATUS_ABORT 23 }; 24 25 struct idle_prof_thread { 26 pthread_t thread; 27 int cpu; 28 int state; 29 struct timeval tps; 30 struct timeval tpe; 31 double cali_time; /* microseconds to finish a unit work */ 32 double loops; 33 double idleness; 34 unsigned char *data; /* bytes to be touched */ 35 pthread_cond_t cond; 36 pthread_mutex_t init_lock; 37 pthread_mutex_t start_lock; 38 39 os_cpu_mask_t cpu_mask; 40 }; 41 42 struct idle_prof_common { 43 struct idle_prof_thread *ipts; 44 int nr_cpus; 45 int status; 46 int opt; 47 double cali_mean; 48 double cali_stddev; 49 void *buf; /* single data allocation for all threads */ 50 }; 51 52 extern int fio_idle_prof_parse_opt(const char *); 53 54 extern void fio_idle_prof_init(void); 55 extern void fio_idle_prof_start(void); 56 extern void fio_idle_prof_stop(void); 57 58 extern void show_idle_prof_stats(int, struct json_object *, struct buf_output *); 59 60 #endif 61
