1 /* 2 * blktrace output analysis: generate a timeline & gather statistics 3 * 4 * Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle (at) 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 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 98 static inline double tv2dbl(struct timeval *tv) 99 { 100 return (double)tv->tv_sec + (((double)tv->tv_usec) / (1000.0 * 1000.0)); 101 } 102 103 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