d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

pmc stat: add debug option for intermediate state

Browse Source
This commit is contained in:
Matt Macy 2018-06-04 22:39:22 +00:00
parent 3d90091d60
commit fae7158959
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=334644
1 changed files with 36 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
usr.sbin/pmc/cmd_pmc_stat.c
View File

@ -244,21 +244,12 @@ pmc_stat_print_stat(struct rusage *ru)
uint64_t ticks, value;
int hz, i;
if (ru) {
hz = getstathz();
ticks = hz * (ru->ru_utime.tv_sec + ru->ru_stime.tv_sec) +
hz * (ru->ru_utime.tv_usec + ru->ru_stime.tv_usec) / 1000000;
if (clock_gettime(CLOCK_MONOTONIC, &after))
err(1, "clock_gettime");
bzero(&cvals, sizeof(cvals));
STAILQ_FOREACH(ev, &pmc_args.pa_events, ev_next) {
if (pmc_read(ev->ev_pmcid, &value) < 0)
err(EX_OSERR, "ERROR: Cannot read pmc \"%s\"",
ev->ev_name);
for (i = 0; i < STAT_MODE_NPMCS; i++)
if (strcmp(ev->ev_name, stat_mode_cntrs[i]) == 0)
cvals[i] += value;
}
/*
* If our round-off on the tick calculation still puts us at 0,
* then always assume at least one tick.
@ -271,6 +262,17 @@ pmc_stat_print_stat(struct rusage *ru)
ru->ru_nvcsw, "voluntary csw", ((double)ru->ru_nvcsw / (double)ticks) / hz);
fprintf(pmc_args.pa_printfile, "%16ld %s\t#\t%02.03f M/sec\n",
ru->ru_nivcsw, "involuntary csw", ((double)ru->ru_nivcsw / (double)ticks) / hz);
}
bzero(&cvals, sizeof(cvals));
STAILQ_FOREACH(ev, &pmc_args.pa_events, ev_next) {
if (pmc_read(ev->ev_pmcid, &value) < 0)
err(EX_OSERR, "ERROR: Cannot read pmc \"%s\"",
ev->ev_name);
for (i = 0; i < STAT_MODE_NPMCS; i++)
if (strcmp(ev->ev_name, stat_mode_cntrs[i]) == 0)
cvals[i] += value;
}
fprintf(pmc_args.pa_printfile, "%16jd %s\n", (uintmax_t)cvals[CYCLES], stat_mode_names[CYCLES]);
fprintf(pmc_args.pa_printfile, "%16jd %s\t\t#\t%01.03f inst/cycle\n", (uintmax_t)cvals[INST], stat_mode_names[INST],
@ -294,7 +296,7 @@ pmc_stat_print_stat(struct rusage *ru)
fprintf(pmc_args.pa_printfile, "\t\t#\t%.03f%%\n",
100 * ((double)cvals[CACHE_MISS] / cvals[CACHE]));
if (ru)
showtime(pmc_args.pa_printfile, &before_ts, &after, ru);
}
@ -313,15 +315,18 @@ pmc_stat_internal(int argc, char **argv, int system_mode)
struct winsize ws;
struct pmcstat_ev *ev;
int c, option, runstate;
int waitstatus, ru_valid;
int waitstatus, ru_valid, do_debug;
ru_valid = 0;
do_debug = ru_valid = 0;
r = event = NULL;
while ((option = getopt_long(argc, argv, "j:", longopts, NULL)) != -1) {
while ((option = getopt_long(argc, argv, "dj:", longopts, NULL)) != -1) {
switch (option) {
case 'j':
r = event = strdup(optarg);
break;
case 'd':
do_debug = 1;
break;
case '?':
default:
usage();
@ -342,6 +347,10 @@ pmc_stat_internal(int argc, char **argv, int system_mode)
EV_SET(&kev, SIGIO, EVFILT_SIGNAL, EV_ADD, 0, 0, NULL);
if (kevent(pmc_kq, &kev, 1, NULL, 0, NULL) < 0)
err(EX_OSERR, "ERROR: Cannot register kevent for SIGIO");
EV_SET(&kev, 0, EVFILT_TIMER, EV_ADD, 0, 1000, NULL);
if (kevent(pmc_kq, &kev, 1, NULL, 0, NULL) < 0)
err(EX_OSERR,
"ERROR: Cannot register kevent for timer");
STAILQ_FOREACH(ev, &pmc_args.pa_events, ev_next) {
if (pmc_allocate(ev->ev_spec, ev->ev_mode,
@ -415,7 +424,10 @@ pmc_stat_internal(int argc, char **argv, int system_mode)
case EVFILT_READ: /* log file data is present */
break;
case EVFILT_TIMER:
if (do_debug)
pmc_stat_print_stat(NULL);
break;
case EVFILT_SIGNAL:
if (kev.ident == SIGCHLD) {
/*