| 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[] = "2.08"; |
| 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; |
| 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 | |
| 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 | clean_allocs(); |
| 93 | |
| 94 | return 0; |
| 95 | } |
| 96 | |
| 97 | static inline double tv2dbl(struct timeval *tv) |
| 98 | { |
| 99 | return (double)tv->tv_sec + (((double)tv->tv_usec) / (1000.0 * 1000.0)); |
| 100 | } |
| 101 | |
| 102 | int process(void) |
| 103 | { |
| 104 | int ret = 0; |
| 105 | struct io *iop = io_alloc(); |
| 106 | struct timeval tvs, tve; |
| 107 | |
| 108 | genesis = last_vtrace = time(NULL); |
| 109 | gettimeofday(&tvs, NULL); |
| 110 | while (!done && next_trace(&iop->t, &iop->pdu)) { |
| 111 | add_trace(iop); |
| 112 | iop = io_alloc(); |
| 113 | } |
| 114 | |
| 115 | io_release(iop); |
| 116 | gettimeofday(&tve, NULL); |
| 117 | |
| 118 | if (verbose) { |
| 119 | double tps, dt_input = tv2dbl(&tve) - tv2dbl(&tvs); |
| 120 | |
| 121 | tps = (double)n_traces / dt_input; |
| 122 | printf("\r " |
| 123 | " \r"); |
| 124 | printf("%10lu traces @ %.1lf Ktps in %.6lf seconds\n", |
| 125 | n_traces, tps/1000.0, |
| 126 | dt_input); |
| 127 | } |
| 128 | |
| 129 | return ret; |
| 130 | } |