-/*
- * How many depth levels to log
- */
-#define FIO_IO_U_MAP_NR 7
-#define FIO_IO_U_LAT_U_NR 10
-#define FIO_IO_U_LAT_M_NR 12
-
-/*
- * Aggregate clat samples to report percentile(s) of them.
- *
- * EXECUTIVE SUMMARY
- *
- * FIO_IO_U_PLAT_BITS determines the maximum statistical error on the
- * value of resulting percentiles. The error will be approximately
- * 1/2^(FIO_IO_U_PLAT_BITS+1) of the value.
- *
- * FIO_IO_U_PLAT_GROUP_NR and FIO_IO_U_PLAT_BITS determine the maximum
- * range being tracked for latency samples. The maximum value tracked
- * accurately will be 2^(GROUP_NR + PLAT_BITS -1) microseconds.
- *
- * FIO_IO_U_PLAT_GROUP_NR and FIO_IO_U_PLAT_BITS determine the memory
- * requirement of storing those aggregate counts. The memory used will
- * be (FIO_IO_U_PLAT_GROUP_NR * 2^FIO_IO_U_PLAT_BITS) * sizeof(int)
- * bytes.
- *
- * FIO_IO_U_PLAT_NR is the total number of buckets.
- *
- * DETAILS
- *
- * Suppose the clat varies from 0 to 999 (usec), the straightforward
- * method is to keep an array of (999 + 1) buckets, in which a counter
- * keeps the count of samples which fall in the bucket, e.g.,
- * {[0],[1],...,[999]}. However this consumes a huge amount of space,
- * and can be avoided if an approximation is acceptable.
- *
- * One such method is to let the range of the bucket to be greater
- * than one. This method has low accuracy when the value is small. For
- * example, let the buckets be {[0,99],[100,199],...,[900,999]}, and
- * the represented value of each bucket be the mean of the range. Then
- * a value 0 has an round-off error of 49.5. To improve on this, we
- * use buckets with non-uniform ranges, while bounding the error of
- * each bucket within a ratio of the sample value. A simple example
- * would be when error_bound = 0.005, buckets are {
- * {[0],[1],...,[99]}, {[100,101],[102,103],...,[198,199]},..,
- * {[900,909],[910,919]...} }. The total range is partitioned into
- * groups with different ranges, then buckets with uniform ranges. An
- * upper bound of the error is (range_of_bucket/2)/value_of_bucket
- *
- * For better efficiency, we implement this using base two. We group
- * samples by their Most Significant Bit (MSB), extract the next M bit
- * of them as an index within the group, and discard the rest of the
- * bits.
- *
- * E.g., assume a sample 'x' whose MSB is bit n (starting from bit 0),
- * and use M bit for indexing
- *
- * | n | M bits | bit (n-M-1) ... bit 0 |
- *
- * Because x is at least 2^n, and bit 0 to bit (n-M-1) is at most
- * (2^(n-M) - 1), discarding bit 0 to (n-M-1) makes the round-off
- * error
- *
- * 2^(n-M)-1 2^(n-M) 1
- * e <= --------- <= ------- = ---
- * 2^n 2^n 2^M
- *
- * Furthermore, we use "mean" of the range to represent the bucket,
- * the error e can be lowered by half to 1 / 2^(M+1). By using M bits
- * as the index, each group must contains 2^M buckets.
- *
- * E.g. Let M (FIO_IO_U_PLAT_BITS) be 6
- * Error bound is 1/2^(6+1) = 0.0078125 (< 1%)
- *
- * Group MSB #discarded range of #buckets
- * error_bits value
- * ----------------------------------------------------------------
- * 0* 0~5 0 [0,63] 64
- * 1* 6 0 [64,127] 64
- * 2 7 1 [128,255] 64
- * 3 8 2 [256,511] 64
- * 4 9 3 [512,1023] 64
- * ... ... ... [...,...] ...
- * 18 23 17 [8838608,+inf]** 64
- *
- * * Special cases: when n < (M-1) or when n == (M-1), in both cases,
- * the value cannot be rounded off. Use all bits of the sample as
- * index.
- *
- * ** If a sample's MSB is greater than 23, it will be counted as 23.
- */
-
-#define FIO_IO_U_PLAT_BITS 6
-#define FIO_IO_U_PLAT_VAL (1 << FIO_IO_U_PLAT_BITS)
-#define FIO_IO_U_PLAT_GROUP_NR 19
-#define FIO_IO_U_PLAT_NR (FIO_IO_U_PLAT_GROUP_NR * FIO_IO_U_PLAT_VAL)
-#define FIO_IO_U_LIST_MAX_LEN 20 /* The size of the default and user-specified
- list of percentiles */
-
-#define MAX_PATTERN_SIZE 512
-
-struct thread_stat {
- char *name;
- char *verror;
- int32_t error;
- int32_t groupid;
- uint32_t pid;
- char *description;
- uint32_t members;
-
- /*
- * bandwidth and latency stats
- */
- struct io_stat clat_stat[2]; /* completion latency */
- struct io_stat slat_stat[2]; /* submission latency */
- struct io_stat lat_stat[2]; /* total latency */
- struct io_stat bw_stat[2]; /* bandwidth stats */
-
- uint64_t stat_io_bytes[2];
- struct timeval stat_sample_time[2];
-
- /*
- * fio system usage accounting
- */
- struct rusage ru_start;
- struct rusage ru_end;
- uint64_t usr_time;
- uint64_t sys_time;
- uint64_t ctx;
- uint64_t minf, majf;
-
- /*
- * IO depth and latency stats
- */
- uint64_t clat_percentiles;
- double *percentile_list;
-
- uint32_t io_u_map[FIO_IO_U_MAP_NR];
- uint32_t io_u_submit[FIO_IO_U_MAP_NR];
- uint32_t io_u_complete[FIO_IO_U_MAP_NR];
- uint32_t io_u_lat_u[FIO_IO_U_LAT_U_NR];
- uint32_t io_u_lat_m[FIO_IO_U_LAT_M_NR];
- uint32_t io_u_plat[2][FIO_IO_U_PLAT_NR];
- uint64_t total_io_u[3];
- uint64_t short_io_u[3];
- uint64_t total_submit;
- uint64_t total_complete;
-
- uint64_t io_bytes[2];
- uint64_t runtime[2];
- uint64_t total_run_time;
-
- /*
- * IO Error related stats
- */
- uint16_t continue_on_error;
- uint64_t total_err_count;
- int32_t first_error;
-
- uint32_t kb_base;
-};
-
-struct bssplit {
- unsigned int bs;
- unsigned char perc;
-};
-
-struct thread_options {
- int pad;
- char *description;
- char *name;
- char *directory;
- char *filename;
- char *opendir;
- char *ioengine;
- enum td_ddir td_ddir;
- unsigned int rw_seq;
- unsigned int kb_base;
- unsigned int ddir_seq_nr;
- long ddir_seq_add;
- unsigned int iodepth;
- unsigned int iodepth_low;
- unsigned int iodepth_batch;
- unsigned int iodepth_batch_complete;
-
- unsigned long long size;
- unsigned int size_percent;
- unsigned int fill_device;
- unsigned long long file_size_low;
- unsigned long long file_size_high;
- unsigned long long start_offset;
-
- unsigned int bs[2];
- unsigned int ba[2];
- unsigned int min_bs[2];
- unsigned int max_bs[2];
- struct bssplit *bssplit[2];
- unsigned int bssplit_nr[2];
-
- unsigned int nr_files;
- unsigned int open_files;
- enum file_lock_mode file_lock_mode;
- unsigned int lockfile_batch;
-
- unsigned int odirect;
- unsigned int invalidate_cache;
- unsigned int create_serialize;
- unsigned int create_fsync;
- unsigned int create_on_open;
- unsigned int end_fsync;
- unsigned int pre_read;
- unsigned int sync_io;
- unsigned int verify;
- unsigned int do_verify;
- unsigned int verifysort;
- unsigned int verify_interval;
- unsigned int verify_offset;
- char verify_pattern[MAX_PATTERN_SIZE];
- unsigned int verify_pattern_bytes;
- unsigned int verify_fatal;
- unsigned int verify_dump;
- unsigned int verify_async;
- unsigned long long verify_backlog;
- unsigned int verify_batch;
- unsigned int use_thread;
- unsigned int unlink;
- unsigned int do_disk_util;
- unsigned int override_sync;
- unsigned int rand_repeatable;
- unsigned int use_os_rand;
- unsigned int write_lat_log;
- unsigned int write_bw_log;
- unsigned int norandommap;
- unsigned int softrandommap;
- unsigned int bs_unaligned;
- unsigned int fsync_on_close;
-
- unsigned int hugepage_size;
- unsigned int rw_min_bs;
- unsigned int thinktime;
- unsigned int thinktime_spin;
- unsigned int thinktime_blocks;
- unsigned int fsync_blocks;
- unsigned int fdatasync_blocks;
- unsigned int barrier_blocks;
- unsigned long long start_delay;
- unsigned long long timeout;
- unsigned long long ramp_time;
- unsigned int overwrite;
- unsigned int bw_avg_time;
- unsigned int loops;
- unsigned long long zone_size;
- unsigned long long zone_skip;
- enum fio_memtype mem_type;
- unsigned int mem_align;
-
- unsigned int stonewall;
- unsigned int new_group;
- unsigned int numjobs;
- os_cpu_mask_t cpumask;
- unsigned int cpumask_set;
- os_cpu_mask_t verify_cpumask;
- unsigned int verify_cpumask_set;
- unsigned int iolog;
- unsigned int rwmixcycle;
- unsigned int rwmix[2];
- unsigned int nice;
- unsigned int file_service_type;
- unsigned int group_reporting;
- unsigned int fadvise_hint;
- enum fio_fallocate_mode fallocate_mode;
- unsigned int zero_buffers;
- unsigned int refill_buffers;
- unsigned int scramble_buffers;
- unsigned int time_based;
- unsigned int disable_lat;
- unsigned int disable_clat;
- unsigned int disable_slat;
- unsigned int disable_bw;
- unsigned int gtod_reduce;
- unsigned int gtod_cpu;
- unsigned int gtod_offload;
- enum fio_cs clocksource;
- unsigned int no_stall;
- unsigned int trim_percentage;
- unsigned int trim_batch;
- unsigned int trim_zero;
- unsigned long long trim_backlog;
- unsigned int clat_percentiles;
- unsigned int overwrite_plist;
- double percentile_list[FIO_IO_U_LIST_MAX_LEN];
-
- char *read_iolog_file;
- char *write_iolog_file;
- char *bw_log_file;
- char *lat_log_file;
- char *replay_redirect;
-
- /*
- * Pre-run and post-run shell
- */
- char *exec_prerun;
- char *exec_postrun;
-
- unsigned int rate[2];
- unsigned int ratemin[2];
- unsigned int ratecycle;
- unsigned int rate_iops[2];
- unsigned int rate_iops_min[2];
-
- char *ioscheduler;
-
- /*
- * CPU "io" cycle burner
- */
- unsigned int cpuload;
- unsigned int cpucycle;
-
- /*
- * I/O Error handling
- */
- unsigned int continue_on_error;
-
- /*
- * Benchmark profile type
- */
- char *profile;
-
- /*
- * blkio cgroup support
- */
- char *cgroup;
- unsigned int cgroup_weight;
- unsigned int cgroup_nodelete;
-
- unsigned int uid;
- unsigned int gid;
-
- unsigned int sync_file_range;
-
- unsigned int userspace_libaio_reap;
-};
-
-#define FIO_VERROR_SIZE 128
-