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Measure CPU used by the sample processing thread.

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This commit is contained in:
Oliver Jowett 2014-09-29 23:04:58 +01:00
parent 4732ad3498
commit 7a0ca85a90
4 changed files with 28 additions and 1 deletions
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10
dump1090.c
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@ -507,6 +507,13 @@ static void display_stats(void) {
printf("%d sample blocks processed\n", Modes.stat_blocks_processed);
printf("%d sample blocks dropped\n", Modes.stat_blocks_dropped);
if (Modes.stat_blocks_processed > 0) {
long cpu_millis = (long)Modes.stat_cputime.tv_sec*1000L + Modes.stat_cputime.tv_nsec/1000000L;
long sample_millis = Modes.stat_blocks_processed * MODES_ASYNC_BUF_SAMPLES / (Modes.oversample ? 2400 : 2000);
printf("%ld ms CPU time used to process %ld ms samples, %.1f%% load\n",
cpu_millis, sample_millis, 100.0 * cpu_millis / sample_millis);
}
printf("%d ModeA/C detected\n", Modes.stat_ModeAC);
printf("%d Mode-S preambles with poor correlation\n", Modes.stat_preamble_no_correlation);
printf("%d Mode-S preambles with noise in the quiet period\n", Modes.stat_preamble_not_quiet);
@ -549,6 +556,9 @@ static void display_stats(void) {
printf("%d total usable messages\n", Modes.stat_goodcrc + Modes.stat_ph_goodcrc + Modes.stat_fixed + Modes.stat_ph_fixed);
fflush(stdout);
Modes.stat_cputime.tv_sec = 0;
Modes.stat_cputime.tv_nsec = 0;
Modes.stat_blocks_processed =
Modes.stat_blocks_dropped = 0;