1 /*
2 * blktrace output analysis: generate a timeline & gather statistics
3 *
4 * Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle@hp.com>
5 *
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.
10 *
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.
15 *
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
19 *
20 */
21 #include <stdio.h>
22 #include <string.h>
23 #include <unistd.h>
24 #include <sys/time.h>
25 #include <time.h>
26 #include "globals.h"
27
28 char bt_timeline_version[] = "2.09";
29
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 char *sps_name, *aqd_name, *q2d_name, *per_io_trees;
33 FILE *rngs_ofp, *avgs_ofp, *xavgs_ofp, *per_io_ofp, *msgs_ofp;
34 int verbose, done, time_bounded, output_all_data, seek_absolute;
35 int easy_parse_avgs, ignore_remaps, do_p_live;
36 double t_astart, t_aend, last_t_seen;
37 unsigned long n_traces;
38 struct avgs_info all_avgs;
39 unsigned int n_devs;
40 time_t genesis, last_vtrace;
41 LIST_HEAD(all_devs);
42 LIST_HEAD(all_procs);
43 LIST_HEAD(all_ios);
44 LIST_HEAD(free_ios);
45 LIST_HEAD(free_bilinks);
46 __u64 q_histo[N_HIST_BKTS], d_histo[N_HIST_BKTS];
47
48 double plat_freq = 0.0;
49 double range_delta = 0.1;
50 __u64 last_q = (__u64)-1;
51
52 struct region_info all_regions = {
53 .qranges = LIST_HEAD_INIT(all_regions.qranges),
54 .cranges = LIST_HEAD_INIT(all_regions.cranges),
55 };
56
57 int process(void);
58
main(int argc,char * argv[])59 int main(int argc, char *argv[])
60 {
61 handle_args(argc, argv);
62
63 init_dev_heads();
64 iostat_init();
65 if (!rstat_init())
66 return 1;
67
68 if (process() || output_avgs(avgs_ofp) || output_ranges(rngs_ofp))
69 return 1;
70
71 if (iostat_ofp) {
72 fprintf(iostat_ofp, "\n");
73 iostat_dump_stats(iostat_last_stamp, 1);
74 }
75
76 if (msgs_ofp != stdout)
77 fclose(msgs_ofp);
78 if (rngs_ofp != stdout)
79 fclose(rngs_ofp);
80 if (avgs_ofp != stdout)
81 fclose(avgs_ofp);
82 if (xavgs_ofp)
83 fclose(xavgs_ofp);
84
85 dip_cleanup();
86 dev_map_exit();
87 dip_exit();
88 rstat_exit();
89 pip_exit();
90 io_free_all();
91 region_exit(&all_regions);
92 p_live_exit();
93 clean_allocs();
94
95 return 0;
96 }
97
tv2dbl(struct timeval * tv)98 static inline double tv2dbl(struct timeval *tv)
99 {
100 return (double)tv->tv_sec + (((double)tv->tv_usec) / (1000.0 * 1000.0));
101 }
102
process(void)103 int process(void)
104 {
105 int ret = 0;
106 struct io *iop = io_alloc();
107 struct timeval tvs, tve;
108
109 genesis = last_vtrace = time(NULL);
110 gettimeofday(&tvs, NULL);
111 while (!done && next_trace(&iop->t, &iop->pdu)) {
112 add_trace(iop);
113 iop = io_alloc();
114 }
115
116 io_release(iop);
117 gettimeofday(&tve, NULL);
118
119 if (verbose) {
120 double tps, dt_input = tv2dbl(&tve) - tv2dbl(&tvs);
121
122 tps = (double)n_traces / dt_input;
123 printf("\r "
124 " \r");
125 printf("%10lu traces @ %.1lf Ktps in %.6lf seconds\n",
126 n_traces, tps/1000.0,
127 dt_input);
128 }
129
130 return ret;
131 }
132