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Diffstat (limited to 'src/bootchart/bootchart.c')
-rw-r--r--src/bootchart/bootchart.c564
1 files changed, 282 insertions, 282 deletions
diff --git a/src/bootchart/bootchart.c b/src/bootchart/bootchart.c
index 2eeb37ae53..3d77bab129 100644
--- a/src/bootchart/bootchart.c
+++ b/src/bootchart/bootchart.c
@@ -62,291 +62,291 @@ static struct rlimit rlim;
static void signal_handler(int sig)
{
- if (sig++)
- sig--;
- exiting = 1;
+ if (sig++)
+ sig--;
+ exiting = 1;
}
int main(int argc, char *argv[])
{
- struct sigaction sig;
- struct ps_struct *ps;
- char output_file[PATH_MAX];
- char datestr[200];
- time_t t;
- FILE *f;
- int gind;
- int i;
-
- memset(&t, 0, sizeof(time_t));
-
- rlim.rlim_cur = 4096;
- rlim.rlim_max = 4096;
- (void) setrlimit(RLIMIT_NOFILE, &rlim);
-
- f = fopen("/etc/systemd/bootchart.conf", "r");
- if (f) {
- char buf[256];
- char *key;
- char *val;
-
- while (fgets(buf, 80, f) != NULL) {
- char *c;
-
- c = strchr(buf, '\n');
- if (c) *c = 0; /* remove trailing \n */
-
- if (buf[0] == '#')
- continue; /* comment line */
-
- key = strtok(buf, "=");
- if (!key)
- continue;
- val = strtok(NULL, "=");
- if (!val)
- continue;
-
- // todo: filter leading/trailing whitespace
-
- if (!strcmp(key, "samples"))
- len = atoi(val);
- if (!strcmp(key, "freq"))
- hz = atof(val);
- if (!strcmp(key, "rel"))
- relative = atoi(val);
- if (!strcmp(key, "filter"))
- filter = atoi(val);
- if (!strcmp(key, "pss"))
- pss = atoi(val);
- if (!strcmp(key, "output"))
- strncpy(output_path, val, PATH_MAX - 1);
- if (!strcmp(key, "init"))
- strncpy(init_path, val, PATH_MAX - 1);
- if (!strcmp(key, "scale_x"))
- scale_x = atof(val);
- if (!strcmp(key, "scale_y"))
- scale_y = atof(val);
- if (!strcmp(key, "entropy"))
- entropy = atoi(val);
- }
- fclose(f);
- }
-
- while (1) {
- static struct option opts[] = {
- {"rel", 0, NULL, 'r'},
- {"freq", 1, NULL, 'f'},
- {"samples", 1, NULL, 'n'},
- {"pss", 0, NULL, 'p'},
- {"output", 1, NULL, 'o'},
- {"init", 1, NULL, 'i'},
- {"filter", 0, NULL, 'F'},
- {"help", 0, NULL, 'h'},
- {"scale-x", 1, NULL, 'x'},
- {"scale-y", 1, NULL, 'y'},
- {"entropy", 0, NULL, 'e'},
- {NULL, 0, NULL, 0}
- };
-
- gind = 0;
-
- i = getopt_long(argc, argv, "erpf:n:o:i:Fhx:y:", opts, &gind);
- if (i == -1)
- break;
- switch (i) {
- case 'r':
- relative = 1;
- break;
- case 'f':
- hz = atof(optarg);
- break;
- case 'F':
- filter = 0;
- break;
- case 'n':
- len = atoi(optarg);
- break;
- case 'o':
- strncpy(output_path, optarg, PATH_MAX - 1);
- break;
- case 'i':
- strncpy(init_path, optarg, PATH_MAX - 1);
- break;
- case 'p':
- pss = 1;
- break;
- case 'x':
- scale_x = atof(optarg);
- break;
- case 'y':
- scale_y = atof(optarg);
- break;
- case 'e':
- entropy = 1;
- break;
- case 'h':
- fprintf(stderr, "Usage: %s [OPTIONS]\n", argv[0]);
- fprintf(stderr, " --rel, -r Record time relative to recording\n");
- fprintf(stderr, " --freq, -f N Sample frequency [%f]\n", hz);
- fprintf(stderr, " --samples, -n N Stop sampling at [%d] samples\n", len);
- fprintf(stderr, " --scale-x, -x N Scale the graph horizontally [%f] \n", scale_x);
- fprintf(stderr, " --scale-y, -y N Scale the graph vertically [%f] \n", scale_y);
- fprintf(stderr, " --pss, -p Enable PSS graph (CPU intensive)\n");
- fprintf(stderr, " --entropy, -e Enable the entropy_avail graph\n");
- fprintf(stderr, " --output, -o [PATH] Path to output files [%s]\n", output_path);
- fprintf(stderr, " --init, -i [PATH] Path to init executable [%s]\n", init_path);
- fprintf(stderr, " --filter, -F Disable filtering of processes from the graph\n");
- fprintf(stderr, " that are of less importance or short-lived\n");
- fprintf(stderr, " --help, -h Display this message\n");
- fprintf(stderr, "See the installed README and bootchartd.conf.example for more information.\n");
- exit (EXIT_SUCCESS);
- break;
- default:
- break;
- }
- }
-
- if (len > MAXSAMPLES) {
- fprintf(stderr, "Error: samples exceeds maximum\n");
- exit(EXIT_FAILURE);
- }
-
- if (hz <= 0.0) {
- fprintf(stderr, "Error: Frequency needs to be > 0\n");
- exit(EXIT_FAILURE);
- }
-
- /*
- * If the kernel executed us through init=/sbin/bootchartd, then
- * fork:
- * - parent execs executable specified via init_path[] (/sbin/init by default) as pid=1
- * - child logs data
- */
- if (getpid() == 1) {
- if (fork()) {
- /* parent */
- execl(init_path, init_path, NULL);
- }
- }
-
- /* start with empty ps LL */
- ps_first = malloc(sizeof(struct ps_struct));
- if (!ps_first) {
- perror("malloc(ps_struct)");
- exit(EXIT_FAILURE);
- }
- memset(ps_first, 0, sizeof(struct ps_struct));
-
- /* handle TERM/INT nicely */
- memset(&sig, 0, sizeof(struct sigaction));
- sig.sa_handler = signal_handler;
- sigaction(SIGHUP, &sig, NULL);
-
- interval = (1.0 / hz) * 1000000000.0;
-
- log_uptime();
-
- /* main program loop */
- while (!exiting) {
- int res;
- double sample_stop;
- struct timespec req;
- time_t newint_s;
- long newint_ns;
- double elapsed;
- double timeleft;
-
- sampletime[samples] = gettime_ns();
-
- /* wait for /proc to become available, discarding samples */
- if (!(graph_start > 0.0))
- log_uptime();
- else
- log_sample(samples);
-
- sample_stop = gettime_ns();
-
- elapsed = (sample_stop - sampletime[samples]) * 1000000000.0;
- timeleft = interval - elapsed;
-
- newint_s = (time_t)(timeleft / 1000000000.0);
- newint_ns = (long)(timeleft - (newint_s * 1000000000.0));
-
- /*
- * check if we have not consumed our entire timeslice. If we
- * do, don't sleep and take a new sample right away.
- * we'll lose all the missed samples and overrun our total
- * time
- */
- if ((newint_ns > 0) || (newint_s > 0)) {
- req.tv_sec = newint_s;
- req.tv_nsec = newint_ns;
-
- res = nanosleep(&req, NULL);
- if (res) {
- if (errno == EINTR) {
- /* caught signal, probably HUP! */
- break;
- }
- perror("nanosleep()");
- exit (EXIT_FAILURE);
- }
- } else {
- overrun++;
- /* calculate how many samples we lost and scrap them */
- len = len + ((int)(newint_ns / interval));
- }
-
- samples++;
-
- if (samples > len)
- break;
-
- }
-
- /* do some cleanup, close fd's */
- ps = ps_first;
- while (ps->next_ps) {
- ps = ps->next_ps;
- if (ps->schedstat)
- close(ps->schedstat);
- if (ps->sched)
- close(ps->sched);
- if (ps->smaps)
- fclose(ps->smaps);
- }
- closedir(proc);
-
- t = time(NULL);
- strftime(datestr, sizeof(datestr), "%Y%m%d-%H%M", localtime(&t));
- snprintf(output_file, PATH_MAX, "%s/bootchart-%s.svg", output_path, datestr);
-
- of = fopen(output_file, "w");
- if (!of) {
- perror("open output_file");
- exit (EXIT_FAILURE);
- }
-
- svg_do();
-
- fprintf(stderr, "bootchartd: Wrote %s\n", output_file);
- fclose(of);
-
- /* nitpic cleanups */
- ps = ps_first;
- while (ps->next_ps) {
- struct ps_struct *old = ps;
- ps = ps->next_ps;
- free(old->sample);
- free(old);
- }
- free(ps->sample);
- free(ps);
-
- /* don't complain when overrun once, happens most commonly on 1st sample */
- if (overrun > 1)
- fprintf(stderr, "bootchartd: Warning: sample time overrun %i times\n", overrun);
-
- return 0;
+ struct sigaction sig;
+ struct ps_struct *ps;
+ char output_file[PATH_MAX];
+ char datestr[200];
+ time_t t;
+ FILE *f;
+ int gind;
+ int i;
+
+ memset(&t, 0, sizeof(time_t));
+
+ rlim.rlim_cur = 4096;
+ rlim.rlim_max = 4096;
+ (void) setrlimit(RLIMIT_NOFILE, &rlim);
+
+ f = fopen("/etc/systemd/bootchart.conf", "r");
+ if (f) {
+ char buf[256];
+ char *key;
+ char *val;
+
+ while (fgets(buf, 80, f) != NULL) {
+ char *c;
+
+ c = strchr(buf, '\n');
+ if (c) *c = 0; /* remove trailing \n */
+
+ if (buf[0] == '#')
+ continue; /* comment line */
+
+ key = strtok(buf, "=");
+ if (!key)
+ continue;
+ val = strtok(NULL, "=");
+ if (!val)
+ continue;
+
+ // todo: filter leading/trailing whitespace
+
+ if (!strcmp(key, "samples"))
+ len = atoi(val);
+ if (!strcmp(key, "freq"))
+ hz = atof(val);
+ if (!strcmp(key, "rel"))
+ relative = atoi(val);
+ if (!strcmp(key, "filter"))
+ filter = atoi(val);
+ if (!strcmp(key, "pss"))
+ pss = atoi(val);
+ if (!strcmp(key, "output"))
+ strncpy(output_path, val, PATH_MAX - 1);
+ if (!strcmp(key, "init"))
+ strncpy(init_path, val, PATH_MAX - 1);
+ if (!strcmp(key, "scale_x"))
+ scale_x = atof(val);
+ if (!strcmp(key, "scale_y"))
+ scale_y = atof(val);
+ if (!strcmp(key, "entropy"))
+ entropy = atoi(val);
+ }
+ fclose(f);
+ }
+
+ while (1) {
+ static struct option opts[] = {
+ {"rel", 0, NULL, 'r'},
+ {"freq", 1, NULL, 'f'},
+ {"samples", 1, NULL, 'n'},
+ {"pss", 0, NULL, 'p'},
+ {"output", 1, NULL, 'o'},
+ {"init", 1, NULL, 'i'},
+ {"filter", 0, NULL, 'F'},
+ {"help", 0, NULL, 'h'},
+ {"scale-x", 1, NULL, 'x'},
+ {"scale-y", 1, NULL, 'y'},
+ {"entropy", 0, NULL, 'e'},
+ {NULL, 0, NULL, 0}
+ };
+
+ gind = 0;
+
+ i = getopt_long(argc, argv, "erpf:n:o:i:Fhx:y:", opts, &gind);
+ if (i == -1)
+ break;
+ switch (i) {
+ case 'r':
+ relative = 1;
+ break;
+ case 'f':
+ hz = atof(optarg);
+ break;
+ case 'F':
+ filter = 0;
+ break;
+ case 'n':
+ len = atoi(optarg);
+ break;
+ case 'o':
+ strncpy(output_path, optarg, PATH_MAX - 1);
+ break;
+ case 'i':
+ strncpy(init_path, optarg, PATH_MAX - 1);
+ break;
+ case 'p':
+ pss = 1;
+ break;
+ case 'x':
+ scale_x = atof(optarg);
+ break;
+ case 'y':
+ scale_y = atof(optarg);
+ break;
+ case 'e':
+ entropy = 1;
+ break;
+ case 'h':
+ fprintf(stderr, "Usage: %s [OPTIONS]\n", argv[0]);
+ fprintf(stderr, " --rel, -r Record time relative to recording\n");
+ fprintf(stderr, " --freq, -f N Sample frequency [%f]\n", hz);
+ fprintf(stderr, " --samples, -n N Stop sampling at [%d] samples\n", len);
+ fprintf(stderr, " --scale-x, -x N Scale the graph horizontally [%f] \n", scale_x);
+ fprintf(stderr, " --scale-y, -y N Scale the graph vertically [%f] \n", scale_y);
+ fprintf(stderr, " --pss, -p Enable PSS graph (CPU intensive)\n");
+ fprintf(stderr, " --entropy, -e Enable the entropy_avail graph\n");
+ fprintf(stderr, " --output, -o [PATH] Path to output files [%s]\n", output_path);
+ fprintf(stderr, " --init, -i [PATH] Path to init executable [%s]\n", init_path);
+ fprintf(stderr, " --filter, -F Disable filtering of processes from the graph\n");
+ fprintf(stderr, " that are of less importance or short-lived\n");
+ fprintf(stderr, " --help, -h Display this message\n");
+ fprintf(stderr, "See the installed README and bootchartd.conf.example for more information.\n");
+ exit (EXIT_SUCCESS);
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (len > MAXSAMPLES) {
+ fprintf(stderr, "Error: samples exceeds maximum\n");
+ exit(EXIT_FAILURE);
+ }
+
+ if (hz <= 0.0) {
+ fprintf(stderr, "Error: Frequency needs to be > 0\n");
+ exit(EXIT_FAILURE);
+ }
+
+ /*
+ * If the kernel executed us through init=/sbin/bootchartd, then
+ * fork:
+ * - parent execs executable specified via init_path[] (/sbin/init by default) as pid=1
+ * - child logs data
+ */
+ if (getpid() == 1) {
+ if (fork()) {
+ /* parent */
+ execl(init_path, init_path, NULL);
+ }
+ }
+
+ /* start with empty ps LL */
+ ps_first = malloc(sizeof(struct ps_struct));
+ if (!ps_first) {
+ perror("malloc(ps_struct)");
+ exit(EXIT_FAILURE);
+ }
+ memset(ps_first, 0, sizeof(struct ps_struct));
+
+ /* handle TERM/INT nicely */
+ memset(&sig, 0, sizeof(struct sigaction));
+ sig.sa_handler = signal_handler;
+ sigaction(SIGHUP, &sig, NULL);
+
+ interval = (1.0 / hz) * 1000000000.0;
+
+ log_uptime();
+
+ /* main program loop */
+ while (!exiting) {
+ int res;
+ double sample_stop;
+ struct timespec req;
+ time_t newint_s;
+ long newint_ns;
+ double elapsed;
+ double timeleft;
+
+ sampletime[samples] = gettime_ns();
+
+ /* wait for /proc to become available, discarding samples */
+ if (!(graph_start > 0.0))
+ log_uptime();
+ else
+ log_sample(samples);
+
+ sample_stop = gettime_ns();
+
+ elapsed = (sample_stop - sampletime[samples]) * 1000000000.0;
+ timeleft = interval - elapsed;
+
+ newint_s = (time_t)(timeleft / 1000000000.0);
+ newint_ns = (long)(timeleft - (newint_s * 1000000000.0));
+
+ /*
+ * check if we have not consumed our entire timeslice. If we
+ * do, don't sleep and take a new sample right away.
+ * we'll lose all the missed samples and overrun our total
+ * time
+ */
+ if ((newint_ns > 0) || (newint_s > 0)) {
+ req.tv_sec = newint_s;
+ req.tv_nsec = newint_ns;
+
+ res = nanosleep(&req, NULL);
+ if (res) {
+ if (errno == EINTR) {
+ /* caught signal, probably HUP! */
+ break;
+ }
+ perror("nanosleep()");
+ exit (EXIT_FAILURE);
+ }
+ } else {
+ overrun++;
+ /* calculate how many samples we lost and scrap them */
+ len = len + ((int)(newint_ns / interval));
+ }
+
+ samples++;
+
+ if (samples > len)
+ break;
+
+ }
+
+ /* do some cleanup, close fd's */
+ ps = ps_first;
+ while (ps->next_ps) {
+ ps = ps->next_ps;
+ if (ps->schedstat)
+ close(ps->schedstat);
+ if (ps->sched)
+ close(ps->sched);
+ if (ps->smaps)
+ fclose(ps->smaps);
+ }
+ closedir(proc);
+
+ t = time(NULL);
+ strftime(datestr, sizeof(datestr), "%Y%m%d-%H%M", localtime(&t));
+ snprintf(output_file, PATH_MAX, "%s/bootchart-%s.svg", output_path, datestr);
+
+ of = fopen(output_file, "w");
+ if (!of) {
+ perror("open output_file");
+ exit (EXIT_FAILURE);
+ }
+
+ svg_do();
+
+ fprintf(stderr, "bootchartd: Wrote %s\n", output_file);
+ fclose(of);
+
+ /* nitpic cleanups */
+ ps = ps_first;
+ while (ps->next_ps) {
+ struct ps_struct *old = ps;
+ ps = ps->next_ps;
+ free(old->sample);
+ free(old);
+ }
+ free(ps->sample);
+ free(ps);
+
+ /* don't complain when overrun once, happens most commonly on 1st sample */
+ if (overrun > 1)
+ fprintf(stderr, "bootchartd: Warning: sample time overrun %i times\n", overrun);
+
+ return 0;
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-23 17:38:24 +0000