| 1 | #ifndef FIO_IOLOG_H |
| 2 | #define FIO_IOLOG_H |
| 3 | |
| 4 | #include "lib/rbtree.h" |
| 5 | #include "lib/ieee754.h" |
| 6 | #include "flist.h" |
| 7 | #include "ioengine.h" |
| 8 | |
| 9 | /* |
| 10 | * Use for maintaining statistics |
| 11 | */ |
| 12 | struct io_stat { |
| 13 | uint64_t max_val; |
| 14 | uint64_t min_val; |
| 15 | uint64_t samples; |
| 16 | |
| 17 | fio_fp64_t mean; |
| 18 | fio_fp64_t S; |
| 19 | }; |
| 20 | |
| 21 | /* |
| 22 | * A single data sample |
| 23 | */ |
| 24 | struct io_sample { |
| 25 | uint64_t time; |
| 26 | uint64_t val; |
| 27 | uint32_t ddir; |
| 28 | uint32_t bs; |
| 29 | }; |
| 30 | |
| 31 | enum { |
| 32 | IO_LOG_TYPE_LAT = 1, |
| 33 | IO_LOG_TYPE_CLAT, |
| 34 | IO_LOG_TYPE_SLAT, |
| 35 | IO_LOG_TYPE_BW, |
| 36 | IO_LOG_TYPE_IOPS, |
| 37 | }; |
| 38 | |
| 39 | /* |
| 40 | * Dynamically growing data sample log |
| 41 | */ |
| 42 | struct io_log { |
| 43 | /* |
| 44 | * Entries already logged |
| 45 | */ |
| 46 | unsigned long nr_samples; |
| 47 | unsigned long max_samples; |
| 48 | struct io_sample *log; |
| 49 | |
| 50 | unsigned int log_type; |
| 51 | |
| 52 | /* |
| 53 | * If we fail extending the log, stop collecting more entries. |
| 54 | */ |
| 55 | unsigned int disabled; |
| 56 | |
| 57 | /* |
| 58 | * Windowed average, for logging single entries average over some |
| 59 | * period of time. |
| 60 | */ |
| 61 | struct io_stat avg_window[DDIR_RWDIR_CNT]; |
| 62 | unsigned long avg_msec; |
| 63 | unsigned long avg_last; |
| 64 | }; |
| 65 | |
| 66 | enum { |
| 67 | IP_F_ONRB = 1, |
| 68 | IP_F_ONLIST = 2, |
| 69 | IP_F_TRIMMED = 4, |
| 70 | }; |
| 71 | |
| 72 | /* |
| 73 | * When logging io actions, this matches a single sent io_u |
| 74 | */ |
| 75 | struct io_piece { |
| 76 | union { |
| 77 | struct rb_node rb_node; |
| 78 | struct flist_head list; |
| 79 | }; |
| 80 | struct flist_head trim_list; |
| 81 | union { |
| 82 | int fileno; |
| 83 | struct fio_file *file; |
| 84 | }; |
| 85 | unsigned long long offset; |
| 86 | unsigned long len; |
| 87 | unsigned int flags; |
| 88 | enum fio_ddir ddir; |
| 89 | union { |
| 90 | unsigned long delay; |
| 91 | unsigned int file_action; |
| 92 | }; |
| 93 | }; |
| 94 | |
| 95 | /* |
| 96 | * Log exports |
| 97 | */ |
| 98 | enum file_log_act { |
| 99 | FIO_LOG_ADD_FILE, |
| 100 | FIO_LOG_OPEN_FILE, |
| 101 | FIO_LOG_CLOSE_FILE, |
| 102 | FIO_LOG_UNLINK_FILE, |
| 103 | }; |
| 104 | |
| 105 | struct io_u; |
| 106 | extern int __must_check read_iolog_get(struct thread_data *, struct io_u *); |
| 107 | extern void log_io_u(struct thread_data *, struct io_u *); |
| 108 | extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act); |
| 109 | extern int __must_check init_iolog(struct thread_data *td); |
| 110 | extern void log_io_piece(struct thread_data *, struct io_u *); |
| 111 | extern void queue_io_piece(struct thread_data *, struct io_piece *); |
| 112 | extern void prune_io_piece_log(struct thread_data *); |
| 113 | extern void write_iolog_close(struct thread_data *); |
| 114 | |
| 115 | /* |
| 116 | * Logging |
| 117 | */ |
| 118 | extern void add_lat_sample(struct thread_data *, enum fio_ddir, unsigned long, |
| 119 | unsigned int); |
| 120 | extern void add_clat_sample(struct thread_data *, enum fio_ddir, unsigned long, |
| 121 | unsigned int); |
| 122 | extern void add_slat_sample(struct thread_data *, enum fio_ddir, unsigned long, |
| 123 | unsigned int); |
| 124 | extern void add_bw_sample(struct thread_data *, enum fio_ddir, unsigned int, |
| 125 | struct timeval *); |
| 126 | extern void add_iops_sample(struct thread_data *, enum fio_ddir, unsigned int, |
| 127 | struct timeval *); |
| 128 | extern void init_disk_util(struct thread_data *); |
| 129 | extern void update_rusage_stat(struct thread_data *); |
| 130 | extern void setup_log(struct io_log **, unsigned long, int); |
| 131 | extern void finish_log(struct thread_data *, struct io_log *, const char *); |
| 132 | extern void finish_log_named(struct thread_data *, struct io_log *, const char *, const char *); |
| 133 | extern void __finish_log(struct io_log *, const char *); |
| 134 | extern struct io_log *agg_io_log[DDIR_RWDIR_CNT]; |
| 135 | extern int write_bw_log; |
| 136 | extern void add_agg_sample(unsigned long, enum fio_ddir, unsigned int); |
| 137 | |
| 138 | static inline void init_ipo(struct io_piece *ipo) |
| 139 | { |
| 140 | memset(ipo, 0, sizeof(*ipo)); |
| 141 | INIT_FLIST_HEAD(&ipo->trim_list); |
| 142 | } |
| 143 | |
| 144 | #endif |