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Add a command line argument (-l) to end event collection after some
number of seconds. The number of seconds may be a fraction. Submitted by: Julien Charbon <jcharbon@versign.com> MFC after: 2 weeks Relnotes: yes
This commit is contained in:
George V. Neville-Neil
parent
dc17b1feaa
commit
72fe532cd6
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=266209
@ -52,6 +52,7 @@
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.Op Fl f Ar pluginopt
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.Op Fl g
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.Op Fl k Ar kerneldir
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.Op Fl l Ar secs
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.Op Fl m Ar pathname
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.Op Fl n Ar rate
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.Op Fl o Ar outputfile
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@ -274,6 +275,13 @@ This directory specifies where
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should look for the kernel and its modules.
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The default is
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.Pa /boot/kernel .
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.It Fl l Ar secs
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Set system-wide performance measurement duration for
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.Ar secs
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seconds.
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The argument
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.Ar secs
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may be a fractional value.
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.It Fl m Ar pathname
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Print the sampled PCs with the name, the start and ending addresses
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of the function within they live.
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@ -509,6 +509,7 @@ pmcstat_show_usage(void)
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"\t -f spec\t pass \"spec\" to as plugin option\n"
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"\t -g\t\t produce gprof(1) compatible profiles\n"
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"\t -k dir\t\t set the path to the kernel\n"
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"\t -l secs\t set duration time\n"
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"\t -m file\t print sampled PCs to \"file\"\n"
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"\t -n rate\t set sampling rate\n"
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"\t -o file\t send print output to \"file\"\n"
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@ -551,6 +552,7 @@ main(int argc, char **argv)
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{
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cpuset_t cpumask;
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double interval;
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double duration;
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int hcpu, option, npmc, ncpu;
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int c, check_driver_stats, current_sampling_count;
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int do_callchain, do_descendants, do_logproccsw, do_logprocexit;
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@ -600,6 +602,7 @@ main(int argc, char **argv)
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args.pa_toptty = 0;
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args.pa_topcolor = 0;
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args.pa_mergepmc = 0;
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args.pa_duration = 0.0;
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STAILQ_INIT(&args.pa_events);
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SLIST_INIT(&args.pa_targets);
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bzero(&ds_start, sizeof(ds_start));
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@ -618,7 +621,7 @@ main(int argc, char **argv)
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CPU_SET(hcpu, &cpumask);
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while ((option = getopt(argc, argv,
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"CD:EF:G:M:NO:P:R:S:TWa:c:df:gk:m:n:o:p:qr:s:t:vw:z:")) != -1)
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"CD:EF:G:M:NO:P:R:S:TWa:c:df:gk:l:m:n:o:p:qr:s:t:vw:z:")) != -1)
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switch (option) {
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case 'a': /* Annotate + callgraph */
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args.pa_flags |= FLAG_DO_ANNOTATE;
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@ -692,6 +695,15 @@ main(int argc, char **argv)
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args.pa_flags |= FLAG_HAS_KERNELPATH;
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break;
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case 'l': /* time duration in seconds */
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duration = strtod(optarg, &end);
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if (*end != '\0' || duration <= 0)
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errx(EX_USAGE, "ERROR: Illegal duration time "
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"value \"%s\".", optarg);
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args.pa_flags |= FLAG_HAS_DURATION;
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args.pa_duration = duration;
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break;
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case 'm':
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args.pa_flags |= FLAG_DO_ANNOTATE;
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args.pa_plugin = PMCSTAT_PL_ANNOTATE;
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@ -922,6 +934,12 @@ main(int argc, char **argv)
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errx(EX_USAGE,
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"ERROR: options -O and -R are mutually exclusive.");
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/* disallow -T and -l together */
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if ((args.pa_flags & FLAG_HAS_DURATION) &&
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(args.pa_flags & FLAG_DO_TOP))
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errx(EX_USAGE, "ERROR: options -T and -l are mutually "
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"exclusive.");
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/* -m option is allowed with -R only. */
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if (args.pa_flags & FLAG_DO_ANNOTATE && args.pa_inputpath == NULL)
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errx(EX_USAGE, "ERROR: option %s requires an input file",
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@ -1279,6 +1297,20 @@ main(int argc, char **argv)
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"ERROR: Cannot register kevent for timer");
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}
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/*
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* Setup a duration timer if we have sampling mode PMCs and
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* a duration time is set
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*/
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if ((args.pa_flags & FLAG_HAS_SAMPLING_PMCS) &&
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(args.pa_flags & FLAG_HAS_DURATION)) {
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EV_SET(&kev, 0, EVFILT_TIMER, EV_ADD, 0,
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args.pa_duration * 1000, NULL);
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if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0)
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err(EX_OSERR, "ERROR: Cannot register kevent for "
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"time duration");
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}
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/* attach PMCs to the target process, starting it if specified */
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if (args.pa_flags & FLAG_HAS_COMMANDLINE)
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pmcstat_create_process();
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@ -1355,7 +1387,7 @@ main(int argc, char **argv)
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/*
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* loop till either the target process (if any) exits, or we
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* are killed by a SIGINT.
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* are killed by a SIGINT or we reached the time duration.
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*/
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runstate = PMCSTAT_RUNNING;
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do_print = do_read = 0;
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@ -1422,7 +1454,13 @@ main(int argc, char **argv)
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break;
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case EVFILT_TIMER: /* print out counting PMCs */
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case EVFILT_TIMER:
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/* time duration reached, exit */
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if (args.pa_flags & FLAG_HAS_DURATION) {
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runstate = PMCSTAT_FINISHED;
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break;
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}
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/* print out counting PMCs */
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if ((args.pa_flags & FLAG_DO_TOP) &&
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pmc_flush_logfile() == 0)
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do_read = 1;
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@ -54,6 +54,7 @@
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#define FLAG_DO_TOP 0x00010000 /* -T */
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#define FLAG_DO_ANALYSIS 0x00020000 /* -g or -G or -m or -T */
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#define FLAGS_HAS_CPUMASK 0x00040000 /* -c */
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#define FLAG_HAS_DURATION 0x00080000 /* -l secs */
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#define DEFAULT_SAMPLE_COUNT 65536
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#define DEFAULT_WAIT_INTERVAL 5.0
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@ -149,6 +150,7 @@ struct pmcstat_args {
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int pa_toptty; /* output to tty or file */
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int pa_topcolor; /* terminal support color */
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int pa_mergepmc; /* merge PMC with same name */
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double pa_duration; /* time duration */
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int pa_argc;
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char **pa_argv;
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STAILQ_HEAD(, pmcstat_ev) pa_events;
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