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139 lines
3.9 KiB
139 lines
3.9 KiB
/*
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* Copyright (C) 2012 Fusion-io
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Parts of this file were imported from Jens Axboe's blktrace sources (also GPL)
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*/
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#ifndef __IOWATCH_BLKPARSE__
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#define __IOWATCH_BLKPARSE__
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#define MINORBITS 20
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#define MINORMASK ((1 << MINORBITS) - 1)
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#define SECONDS(x) ((unsigned long long)(x) / 1000000000)
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#define NANO_SECONDS(x) ((unsigned long long)(x) % 1000000000)
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#define DOUBLE_TO_NANO_ULL(d) ((unsigned long long)((d) * 1000000000))
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#define CHECK_MAGIC(t) (((t)->magic & 0xffffff00) == BLK_IO_TRACE_MAGIC)
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struct dev_info {
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u32 device;
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u64 min;
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u64 max;
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u64 map;
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};
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#define MAX_DEVICES_PER_TRACE 64
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struct trace {
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int fd;
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u64 len;
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char *start;
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char *cur;
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struct blk_io_trace *io;
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u64 start_timestamp;
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struct timespec abs_start_time;
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/*
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* flags for the things we find in the stream
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* we prefer different events for different things
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*/
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int found_issue;
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int found_completion;
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int found_queue;
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char *mpstat_start;
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char *mpstat_cur;
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u64 mpstat_len;
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int mpstat_fd;
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int mpstat_seconds;
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int mpstat_num_cpus;
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char *fio_start;
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char *fio_cur;
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u64 fio_len;
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int fio_fd;
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int fio_seconds;
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int num_devices;
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struct dev_info devices[MAX_DEVICES_PER_TRACE];
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};
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struct trace_file {
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struct list_head list;
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char *filename;
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char *label;
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struct trace *trace;
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unsigned int stop_seconds; /* Time when trace stops */
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unsigned int min_seconds; /* Beginning of the interval we should plot */
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unsigned int max_seconds; /* End of the interval we should plot */
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u64 min_offset;
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u64 max_offset;
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char *reads_color;
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char *writes_color;
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char *line_color;
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struct graph_line_data *tput_writes_gld;
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struct graph_line_data *tput_reads_gld;
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struct graph_line_data *iop_gld;
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struct graph_line_data *latency_gld;
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struct graph_line_data *queue_depth_gld;
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int fio_trace;
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struct graph_line_data *fio_gld;
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/* Number of entries in gdd_writes / gdd_reads */
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int io_plots;
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/* Allocated array size for gdd_writes / gdd_reads */
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int io_plots_allocated;
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struct graph_dot_data **gdd_writes;
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struct graph_dot_data **gdd_reads;
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unsigned int mpstat_min_seconds;
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unsigned int mpstat_max_seconds;
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unsigned int mpstat_stop_seconds;
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struct graph_line_data **mpstat_gld;
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};
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static inline unsigned int MAJOR(unsigned int dev)
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{
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return dev >> MINORBITS;
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}
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static inline unsigned int MINOR(unsigned int dev)
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{
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return dev & MINORMASK;
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}
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void init_io_hash_table(void);
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void init_process_hash_table(void);
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struct trace *open_trace(char *filename);
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u64 find_last_time(struct trace *trace);
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void find_extreme_offsets(struct trace *trace, u64 *min_ret, u64 *max_ret,
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u64 *max_bank_ret, u64 *max_offset_ret);
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int filter_outliers(struct trace *trace, u64 min_offset, u64 max_offset,
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u64 *yzoom_min, u64 *yzoom_max);
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int action_char_to_num(char action);
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void add_iop(struct trace *trace, struct graph_line_data *gld);
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void check_record(struct trace *trace);
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void add_completed_io(struct trace *trace,
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struct graph_line_data *latency_gld);
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void add_io(struct trace *trace, struct trace_file *tf);
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void add_tput(struct trace *trace, struct graph_line_data *writes_gld,
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struct graph_line_data *reads_gld);
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void add_pending_io(struct trace *trace, struct graph_line_data *gld);
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int next_record(struct trace *trace);
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u64 get_record_time(struct trace *trace);
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void first_record(struct trace *trace);
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#endif
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