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 struct io_sample_offset { 32 struct io_sample s; 33 uint64_t offset; 34 }; 35 36 enum { 37 IO_LOG_TYPE_LAT = 1, 38 IO_LOG_TYPE_CLAT, 39 IO_LOG_TYPE_SLAT, 40 IO_LOG_TYPE_BW, 41 IO_LOG_TYPE_IOPS, 42 }; 43 44 /* 45 * Dynamically growing data sample log 46 */ 47 struct io_log { 48 /* 49 * Entries already logged 50 */ 51 uint64_t nr_samples; 52 uint64_t max_samples; 53 void *log; 54 55 unsigned int log_ddir_mask; 56 57 char *filename; 58 59 struct thread_data *td; 60 61 unsigned int log_type; 62 63 /* 64 * If we fail extending the log, stop collecting more entries. 65 */ 66 unsigned int disabled; 67 68 /* 69 * Log offsets 70 */ 71 unsigned int log_offset; 72 73 /* 74 * Max size of log entries before a chunk is compressed 75 */ 76 unsigned int log_gz; 77 78 /* 79 * Don't deflate for storing, just store the compressed bits 80 */ 81 unsigned int log_gz_store; 82 83 /* 84 * Windowed average, for logging single entries average over some 85 * period of time. 86 */ 87 struct io_stat avg_window[DDIR_RWDIR_CNT]; 88 unsigned long avg_msec; 89 unsigned long avg_last; 90 91 pthread_mutex_t chunk_lock; 92 unsigned int chunk_seq; 93 struct flist_head chunk_list; 94 }; 95 96 /* 97 * If the upper bit is set, then we have the offset as well 98 */ 99 #define LOG_OFFSET_SAMPLE_BIT 0x80000000U 100 #define io_sample_ddir(io) ((io)->__ddir & ~LOG_OFFSET_SAMPLE_BIT) 101 102 static inline void io_sample_set_ddir(struct io_log *log, 103 struct io_sample *io, 104 enum fio_ddir ddir) 105 { 106 io->__ddir = ddir | log->log_ddir_mask; 107 } 108 109 static inline size_t __log_entry_sz(int log_offset) 110 { 111 if (log_offset) 112 return sizeof(struct io_sample_offset); 113 else 114 return sizeof(struct io_sample); 115 } 116 117 static inline size_t log_entry_sz(struct io_log *log) 118 { 119 return __log_entry_sz(log->log_offset); 120 } 121 122 static inline struct io_sample *__get_sample(void *samples, int log_offset, 123 uint64_t sample) 124 { 125 return samples + sample * __log_entry_sz(log_offset); 126 } 127 128 static inline struct io_sample *get_sample(struct io_log *iolog, 129 uint64_t sample) 130 { 131 return __get_sample(iolog->log, iolog->log_offset, sample); 132 } 133 134 enum { 135 IP_F_ONRB = 1, 136 IP_F_ONLIST = 2, 137 IP_F_TRIMMED = 4, 138 IP_F_IN_FLIGHT = 8, 139 }; 140 141 /* 142 * When logging io actions, this matches a single sent io_u 143 */ 144 struct io_piece { 145 union { 146 struct rb_node rb_node; 147 struct flist_head list; 148 }; 149 struct flist_head trim_list; 150 union { 151 int fileno; 152 struct fio_file *file; 153 }; 154 unsigned long long offset; 155 unsigned short numberio; 156 unsigned long len; 157 unsigned int flags; 158 enum fio_ddir ddir; 159 union { 160 unsigned long delay; 161 unsigned int file_action; 162 }; 163 }; 164 165 /* 166 * Log exports 167 */ 168 enum file_log_act { 169 FIO_LOG_ADD_FILE, 170 FIO_LOG_OPEN_FILE, 171 FIO_LOG_CLOSE_FILE, 172 FIO_LOG_UNLINK_FILE, 173 }; 174 175 struct io_u; 176 extern int __must_check read_iolog_get(struct thread_data *, struct io_u *); 177 extern void log_io_u(const struct thread_data *, const struct io_u *); 178 extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act); 179 extern int __must_check init_iolog(struct thread_data *td); 180 extern void log_io_piece(struct thread_data *, struct io_u *); 181 extern void unlog_io_piece(struct thread_data *, struct io_u *); 182 extern void trim_io_piece(struct thread_data *, const struct io_u *); 183 extern void queue_io_piece(struct thread_data *, struct io_piece *); 184 extern void prune_io_piece_log(struct thread_data *); 185 extern void write_iolog_close(struct thread_data *); 186 187 #ifdef CONFIG_ZLIB 188 extern int iolog_file_inflate(const char *); 189 #endif 190 191 /* 192 * Logging 193 */ 194 struct log_params { 195 struct thread_data *td; 196 unsigned long avg_msec; 197 int log_type; 198 int log_offset; 199 int log_gz; 200 int log_gz_store; 201 int log_compress; 202 }; 203 204 extern void finalize_logs(struct thread_data *td); 205 extern void add_lat_sample(struct thread_data *, enum fio_ddir, unsigned long, 206 unsigned int, uint64_t); 207 extern void add_clat_sample(struct thread_data *, enum fio_ddir, unsigned long, 208 unsigned int, uint64_t); 209 extern void add_slat_sample(struct thread_data *, enum fio_ddir, unsigned long, 210 unsigned int, uint64_t); 211 extern void add_bw_sample(struct thread_data *, enum fio_ddir, unsigned int, 212 struct timeval *); 213 extern void add_iops_sample(struct thread_data *, enum fio_ddir, unsigned int, 214 struct timeval *); 215 extern void init_disk_util(struct thread_data *); 216 extern void update_rusage_stat(struct thread_data *); 217 extern void setup_log(struct io_log **, struct log_params *, const char *); 218 extern void flush_log(struct io_log *); 219 extern void free_log(struct io_log *); 220 extern struct io_log *agg_io_log[DDIR_RWDIR_CNT]; 221 extern int write_bw_log; 222 extern void add_agg_sample(unsigned long, enum fio_ddir, unsigned int); 223 extern void fio_writeout_logs(struct thread_data *); 224 extern int iolog_flush(struct io_log *, int); 225 226 static inline void init_ipo(struct io_piece *ipo) 227 { 228 memset(ipo, 0, sizeof(*ipo)); 229 INIT_FLIST_HEAD(&ipo->trim_list); 230 } 231 232 #endif 233
