2 * blktrace output analysis: generate a timeline & gather statistics
4 * Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle@hp.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 char bt_timeline_version[] = "2.04";
30 char *devices, *exes, *input_name, *output_name, *seek_name, *bno_dump_name;
31 char *d2c_name, *q2c_name, *per_io_name, *unplug_hist_name;
32 FILE *ranges_ofp, *avgs_ofp, *xavgs_ofp, *per_io_ofp;
33 int verbose, done, time_bounded, output_all_data, seek_absolute;
35 double t_astart, t_aend;
36 unsigned long n_traces;
37 struct avgs_info all_avgs;
39 time_t genesis, last_vtrace;
44 LIST_HEAD(free_bilinks);
45 __u64 q_histo[N_HIST_BKTS], d_histo[N_HIST_BKTS];
47 double range_delta = 0.1;
48 __u64 last_q = (__u64)-1;
50 struct region_info all_regions = {
51 .qranges = LIST_HEAD_INIT(all_regions.qranges),
52 .cranges = LIST_HEAD_INIT(all_regions.cranges),
57 int main(int argc, char *argv[])
59 handle_args(argc, argv);
63 if (process() || output_avgs(avgs_ofp) || output_ranges(ranges_ofp))
67 fprintf(iostat_ofp, "\n");
68 iostat_dump_stats(iostat_last_stamp, 1);
71 if (ranges_ofp != stdout)
73 if (avgs_ofp != stdout)
83 region_exit(&all_regions);
86 if (output_name) free(output_name);
94 static inline double tv2dbl(struct timeval *tv)
96 return (double)tv->tv_sec + (((double)tv->tv_usec) / (1000.0 * 1000.0));
102 struct io *iop = io_alloc();
103 struct timeval tvs, tve;
105 genesis = last_vtrace = time(NULL);
106 gettimeofday(&tvs, NULL);
107 while (!done && next_trace(&iop->t, &iop->pdu)) {
113 gettimeofday(&tve, NULL);
116 double tps, dt_input = tv2dbl(&tve) - tv2dbl(&tvs);
118 tps = (double)n_traces / dt_input;
121 printf("%10lu traces @ %.1lf Ktps in %.6lf seconds\n",
122 n_traces, tps/1000.0,