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
26 char bt_timeline_version[] = "0.99";
28 char *devices, *exes, *input_name, *output_name, *seek_name;
29 char *d2c_name, *q2c_name;
30 double range_delta = 0.1;
31 FILE *ranges_ofp, *avgs_ofp;
33 unsigned long n_traces;
34 struct avgs_info all_avgs;
35 __u64 last_q = (__u64)-1;
37 time_t genesis, last_vtrace;
42 struct region_info all_regions = {
43 .qranges = LIST_HEAD_INIT(all_regions.qranges),
44 .cranges = LIST_HEAD_INIT(all_regions.cranges),
51 int main(int argc, char *argv[])
53 handle_args(argc, argv);
57 if (process() || output_avgs(avgs_ofp) || output_ranges(ranges_ofp))
66 struct blk_io_trace *t;
67 struct io *iop = io_alloc();
69 genesis = last_vtrace = time(NULL);
70 while (!do_read(ifd, &iop->t, sizeof(struct blk_io_trace))) {
71 t = convert_to_cpu(&iop->t);
73 iop->pdu = malloc(t->pdu_len);
74 if (do_read(ifd, iop->pdu, t->pdu_len)) {
85 fprintf(iostat_ofp, "\n");
86 iostat_dump_stats(iostat_last_stamp, 1);
93 double tps = (double)n_traces / (double)(time(NULL) - genesis);
94 printf("%10lu traces @ %.1lf Ktps\n", n_traces, tps/1000.0);