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Dynamically allocate bootchart logs

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Instead of storing bootchart sample data in arrays, this patch moves
storage to linked lists so that there is no more limit on samples.

This patch also fixes parsing of /proc/<pid>/smaps in kernels > 3.7.
This commit is contained in:
Nathaniel Chen 2013-04-24 14:56:15 -07:00 committed by Auke Kok
parent 8368868452
commit 8dfb6e718d
5 changed files with 437 additions and 143 deletions
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48
src/bootchart/bootchart.c
View File

@ -59,14 +59,11 @@
#include "store.h"
#include "svg.h"
#include "bootchart.h"
#include "list.h"
double graph_start;
double log_start;
double sampletime[MAXSAMPLES];
struct ps_struct *ps_first;
struct block_stat_struct blockstat[MAXSAMPLES];
int entropy_avail[MAXSAMPLES];
struct cpu_stat_struct cpustat[MAXCPUS];
int pscount;
int cpus;
double interval;
@ -87,6 +84,8 @@ int arg_samples_len = 500; /* we record len+1 (1 start sample) */
double arg_hz = 25.0; /* 20 seconds log time */
double arg_scale_x = 100.0; /* 100px = 1sec */
double arg_scale_y = 20.0; /* 16px = 1 process bar */
static struct list_sample_data *sampledata;
struct list_sample_data *head;
char arg_init_path[PATH_MAX] = "/sbin/init";
char arg_output_path[PATH_MAX] = "/run/log";
@ -227,11 +226,6 @@ static int parse_args(int argc, char *argv[]) {
}
}
if (arg_samples_len > MAXSAMPLES) {
fprintf(stderr, "Error: samples exceeds maximum\n");
return -EINVAL;
}
if (arg_hz <= 0.0) {
fprintf(stderr, "Error: Frequency needs to be > 0\n");
return -EINVAL;
@ -338,6 +332,8 @@ int main(int argc, char *argv[]) {
log_uptime();
LIST_HEAD_INIT(struct list_sample_data, head);
/* main program loop */
for (samples = 0; !exiting && samples < arg_samples_len; samples++) {
int res;
@ -348,7 +344,14 @@ int main(int argc, char *argv[]) {
double elapsed;
double timeleft;
sampletime[samples] = gettime_ns();
sampledata = new0(struct list_sample_data, 1);
if (sampledata == NULL) {
log_error("Failed to allocate memory for a node: %m");
return -1;
}
sampledata->sampletime = gettime_ns();
sampledata->counter = samples;
if (!of && (access(arg_output_path, R_OK|W_OK|X_OK) == 0)) {
t = time(NULL);
@ -369,11 +372,11 @@ int main(int argc, char *argv[]) {
if (graph_start <= 0.0)
log_uptime();
else
log_sample(samples);
log_sample(samples, &sampledata);
sample_stop = gettime_ns();
elapsed = (sample_stop - sampletime[samples]) * 1000000000.0;
elapsed = (sample_stop - sampledata->sampletime) * 1000000000.0;
timeleft = interval - elapsed;
newint_s = (time_t)(timeleft / 1000000000.0);
@ -403,6 +406,7 @@ int main(int argc, char *argv[]) {
/* calculate how many samples we lost and scrap them */
arg_samples_len -= (int)(newint_ns / interval);
}
LIST_PREPEND(struct list_sample_data, link, head, sampledata);
}
/* do some cleanup, close fd's */
@ -443,16 +447,32 @@ int main(int argc, char *argv[]) {
close(sysfd);
/* nitpic cleanups */
ps = ps_first;
ps = ps_first->next_ps;
while (ps->next_ps) {
struct ps_struct *old = ps;
struct ps_struct *old;
old = ps;
old->sample = ps->first;
ps = ps->next_ps;
while (old->sample->next) {
struct ps_sched_struct *oldsample = old->sample;
old->sample = old->sample->next;
free(oldsample);
}
free(old->sample);
free(old);
}
free(ps->sample);
free(ps);
sampledata = head;
while (sampledata->link_prev) {
struct list_sample_data *old_sampledata = sampledata;
sampledata = sampledata->link_prev;
free(old_sampledata);
}
free(sampledata);
/* don't complain when overrun once, happens most commonly on 1st sample */
if (overrun > 1)
fprintf(stderr, "systemd-boochart: Warning: sample time overrun %i times\n", overrun);

23
src/bootchart/bootchart.h
View File

@ -26,6 +26,7 @@
#include <dirent.h>
#include <stdbool.h>
#include "list.h"
#define MAXCPUS 16
#define MAXPIDS 65535
@ -54,6 +55,22 @@ struct ps_sched_struct {
double runtime;
double waittime;
int pss;
struct list_sample_data *sampledata;
struct ps_sched_struct *next;
struct ps_sched_struct *prev;
struct ps_sched_struct *cross; /* cross pointer */
struct ps_struct *ps_new;
};
struct list_sample_data {
double runtime[MAXCPUS];
double waittime[MAXCPUS];
double sampletime;
int entropy_avail;
struct block_stat_struct blockstat;
struct cpu_stat_struct cpustat;
LIST_FIELDS(struct list_sample_data, link); /* DLL */
int counter;
};
/* process info */
@ -73,9 +90,9 @@ struct ps_struct {
int schedstat;
FILE *smaps;
/* index to first/last seen timestamps */
int first;
int last;
/* pointers to first/last seen timestamps */
struct ps_sched_struct *first;
struct ps_sched_struct *last;
/* records actual start time, may be way before bootchart runs */
double starttime;

96
src/bootchart/store.c Normal file → Executable file
View File

@ -44,6 +44,7 @@
* read() overhead.
*/
static char smaps_buf[4096];
static int skip = 0;
DIR *proc;
int procfd = -1;
@ -111,7 +112,7 @@ static int pid_cmdline_strscpy(char *buffer, size_t buf_len, int pid) {
return 0;
}
void log_sample(int sample) {
void log_sample(int sample, struct list_sample_data **ptr) {
static int vmstat;
static int schedstat;
char buf[4096];
@ -128,6 +129,12 @@ void log_sample(int sample) {
ssize_t n;
struct dirent *ent;
int fd;
struct list_sample_data *sampledata;
struct ps_sched_struct *ps_prev = NULL;
sampledata = *ptr;
/* all the per-process stuff goes here */
if (!proc) {
@ -161,9 +168,9 @@ void log_sample(int sample) {
if (sscanf(m, "%s %s", key, val) < 2)
goto vmstat_next;
if (streq(key, "pgpgin"))
blockstat[sample].bi = atoi(val);
sampledata->blockstat.bi = atoi(val);
if (streq(key, "pgpgout")) {
blockstat[sample].bo = atoi(val);
sampledata->blockstat.bo = atoi(val);
break;
}
vmstat_next:
@ -198,8 +205,8 @@ vmstat_next:
if (c > MAXCPUS)
/* Oops, we only have room for MAXCPUS data */
break;
cpustat[c].sample[sample].runtime = atoll(rt);
cpustat[c].sample[sample].waittime = atoll(wt);
sampledata->runtime[c] = atoll(rt);
sampledata->waittime[c] = atoll(wt);
if (c == cpus)
cpus = c + 1;
@ -219,7 +226,7 @@ schedstat_next:
n = pread(e_fd, buf, sizeof(buf) - 1, 0);
if (n > 0) {
buf[n] = '\0';
entropy_avail[sample] = atoi(buf);
sampledata->entropy_avail = atoi(buf);
}
}
}
@ -258,16 +265,19 @@ schedstat_next:
ps = ps->next_ps;
ps->pid = pid;
ps->sample = calloc(arg_samples_len + 1, sizeof(struct ps_sched_struct));
ps->sample = calloc(1, sizeof(struct ps_sched_struct));
if (!ps->sample) {
perror("calloc(ps_struct)");
exit (EXIT_FAILURE);
}
ps->sample->sampledata = sampledata;
pscount++;
/* mark our first sample */
ps->first = sample;
ps->first = ps->sample;
ps->sample->runtime = atoll(rt);
ps->sample->waittime = atoll(wt);
/* get name, start time */
if (!ps->sched) {
@ -383,16 +393,28 @@ schedstat_next:
if (!sscanf(buf, "%s %s %*s", rt, wt))
continue;
ps->last = sample;
ps->sample[sample].runtime = atoll(rt);
ps->sample[sample].waittime = atoll(wt);
ps->total = (ps->sample[ps->last].runtime
- ps->sample[ps->first].runtime)
/ 1000000000.0;
ps->sample->next = calloc(1, sizeof(struct ps_sched_struct));
if (!ps->sample) {
perror("calloc(ps_struct)");
exit (EXIT_FAILURE);
}
ps->sample->next->prev = ps->sample;
ps->sample = ps->sample->next;
ps->last = ps->sample;
ps->sample->runtime = atoll(rt);
ps->sample->waittime = atoll(wt);
ps->sample->sampledata = sampledata;
ps->sample->ps_new = ps;
if (ps_prev) {
ps_prev->cross = ps->sample;
}
ps_prev = ps->sample;
ps->total = (ps->last->runtime - ps->first->runtime)
/ 1000000000.0;
if (!arg_pss)
goto catch_rename;
/* Pss */
if (!ps->smaps) {
sprintf(filename, "%d/smaps", pid);
@ -401,31 +423,53 @@ schedstat_next:
if (!ps->smaps)
continue;
setvbuf(ps->smaps, smaps_buf, _IOFBF, sizeof(smaps_buf));
} else {
}
else {
rewind(ps->smaps);
}
/* test to see if we need to skip another field */
if (skip == 0) {
if (fgets(buf, sizeof(buf), ps->smaps) == NULL) {
continue;
}
if (fread(buf, 1, 28 * 15, ps->smaps) != (28 * 15)) {
continue;
}
if (buf[392] == 'V') {
skip = 2;
}
else {
skip = 1;
}
rewind(ps->smaps);
}
while (1) {
int pss_kb;
/* skip one line, this contains the object mapped */
if (fgets(buf, sizeof(buf), ps->smaps) == NULL)
/* skip one line, this contains the object mapped. */
if (fgets(buf, sizeof(buf), ps->smaps) == NULL) {
break;
}
/* then there's a 28 char 14 line block */
if (fread(buf, 1, 28 * 14, ps->smaps) != 28 * 14)
if (fread(buf, 1, 28 * 14, ps->smaps) != 28 * 14) {
break;
}
pss_kb = atoi(&buf[61]);
ps->sample[sample].pss += pss_kb;
}
ps->sample->pss += pss_kb;
if (ps->sample[sample].pss > ps->pss_max)
ps->pss_max = ps->sample[sample].pss;
/* skip one more line if this is a newer kernel */
if (skip == 2) {
if (fgets(buf, sizeof(buf), ps->smaps) == NULL)
break;
}
}
if (ps->sample->pss > ps->pss_max)
ps->pss_max = ps->sample->pss;
catch_rename:
/* catch process rename, try to randomize time */
mod = (arg_hz < 4.0) ? 4.0 : (arg_hz / 4.0);
if (((samples - ps->first) + pid) % (int)(mod) == 0) {
if (((samples - ps->pid) + pid) % (int)(mod) == 0) {
/* re-fetch name */
/* get name, start time */

3
src/bootchart/store.h
View File

@ -25,10 +25,11 @@
***/
#include <dirent.h>
#include "bootchart.h"
extern DIR *proc;
extern int procfd;
double gettime_ns(void);
void log_uptime(void);
void log_sample(int sample);
void log_sample(int sample, struct list_sample_data **ptr);

410
src/bootchart/svg.c
View File

@ -38,6 +38,7 @@
#include "store.h"
#include "svg.h"
#include "bootchart.h"
#include "list.h"
#define time_to_graph(t) ((t) * arg_scale_x)
#define ps_to_graph(n) ((n) * arg_scale_y)
@ -70,13 +71,24 @@ static int kcount = 0;
static float psize = 0;
static float ksize = 0;
static float esize = 0;
static struct list_sample_data *sampledata;
static struct list_sample_data *prev_sampledata;
extern struct list_sample_data *head;
static void svg_header(void) {
float w;
float h;
struct list_sample_data *sampledata_last;
sampledata = head;
LIST_FIND_TAIL(struct list_sample_data, link, sampledata, head);
sampledata_last = head;
LIST_FOREACH_BEFORE(link, sampledata, head) {
sampledata_last = sampledata;
}
/* min width is about 1600px due to the label */
w = 150.0 + 10.0 + time_to_graph(sampletime[samples-1] - graph_start);
w = 150.0 + 10.0 + time_to_graph(sampledata_last->sampletime - graph_start);
w = ((w < 1600.0) ? 1600.0 : w);
/* height is variable based on pss, psize, ksize */
@ -223,14 +235,23 @@ static void svg_title(const char *build) {
static void svg_graph_box(int height) {
double d = 0.0;
int i = 0;
double finalsample = 0.0;
struct list_sample_data *sampledata_last;
sampledata_last = head;
LIST_FOREACH_BEFORE(link, sampledata, head) {
sampledata_last = sampledata;
}
finalsample = sampledata_last->sampletime;
/* outside box, fill */
svg("<rect class=\"box\" x=\"%.03f\" y=\"0\" width=\"%.03f\" height=\"%.03f\" />\n",
time_to_graph(0.0),
time_to_graph(sampletime[samples-1] - graph_start),
time_to_graph(finalsample - graph_start),
ps_to_graph(height));
for (d = graph_start; d <= sampletime[samples-1];
for (d = graph_start; d <= finalsample;
d += (arg_scale_x < 2.0 ? 60.0 : arg_scale_x < 10.0 ? 1.0 : 0.1)) {
/* lines for each second */
if (i % 50 == 0)
@ -278,6 +299,13 @@ static char* xml_comment_encode(const char* name) {
static void svg_pss_graph(void) {
struct ps_struct *ps;
int i;
struct list_sample_data *sampledata_last;
sampledata_last = head;
LIST_FOREACH_BEFORE(link, sampledata, head) {
sampledata_last = sampledata;
}
svg("\n\n<!-- Pss memory size graph -->\n");
@ -290,18 +318,21 @@ static void svg_pss_graph(void) {
svg(" <line class=\"sec01\" x1=\"%.03f\" y1=\"%.0f\" x2=\"%.03f\" y2=\"%.0f\"/>\n",
time_to_graph(.0),
kb_to_graph(i),
time_to_graph(sampletime[samples-1] - graph_start),
time_to_graph(sampledata_last->sampletime - graph_start),
kb_to_graph(i));
svg(" <text class=\"sec\" x=\"%.03f\" y=\"%.0f\">%dM</text>\n",
time_to_graph(sampletime[samples-1] - graph_start) + 5,
time_to_graph(sampledata_last->sampletime - graph_start) + 5,
kb_to_graph(i), (1000000 - i) / 1000);
}
svg("\n");
/* now plot the graph itself */
for (i = 1; i < samples ; i++) {
i = 1;
prev_sampledata = head;
LIST_FOREACH_BEFORE(link, sampledata, head) {
int bottom;
int top;
struct ps_sched_struct *cross_place;
bottom = 0;
top = 0;
@ -312,16 +343,32 @@ static void svg_pss_graph(void) {
ps = ps->next_ps;
if (!ps)
continue;
if (ps->sample[i].pss <= (100 * arg_scale_y))
top += ps->sample[i].pss;
};
ps->sample = ps->first;
while (ps->sample->next) {
ps->sample = ps->sample->next;
if (ps->sample->sampledata == sampledata)
break;
}
if (ps->sample->sampledata == sampledata) {
if (ps->sample->pss <= (100 * arg_scale_y))
top += ps->sample->pss;
break;
}
}
while (ps->sample->cross) {
cross_place = ps->sample->cross;
ps = ps->sample->cross->ps_new;
ps->sample = cross_place;
if (ps->sample->pss <= (100 * arg_scale_y))
top += ps->sample->pss;
}
svg(" <rect class=\"clrw\" style=\"fill: %s\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
"rgb(64,64,64)",
time_to_graph(sampletime[i - 1] - graph_start),
time_to_graph(prev_sampledata->sampletime - graph_start),
kb_to_graph(1000000.0 - top),
time_to_graph(sampletime[i] - sampletime[i - 1]),
time_to_graph(sampledata->sampletime - prev_sampledata->sampletime),
kb_to_graph(top - bottom));
bottom = top;
/* now plot the ones that are of significant size */
@ -330,59 +377,129 @@ static void svg_pss_graph(void) {
ps = ps->next_ps;
if (!ps)
continue;
ps->sample = ps->first;
while (ps->sample->next) {
ps->sample = ps->sample->next;
if (ps->sample->sampledata == sampledata)
break;
}
/* don't draw anything smaller than 2mb */
if (ps->sample[i].pss > (100 * arg_scale_y)) {
top = bottom + ps->sample[i].pss;
if (ps->sample->sampledata == sampledata) {
if (ps->sample->pss > (100 * arg_scale_y)) {
top = bottom + ps->sample->pss;
svg(" <rect class=\"clrw\" style=\"fill: %s\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
colorwheel[ps->pid % 12],
time_to_graph(sampletime[i - 1] - graph_start),
kb_to_graph(1000000.0 - top),
time_to_graph(sampletime[i] - sampletime[i - 1]),
kb_to_graph(top - bottom));
colorwheel[ps->pid % 12],
time_to_graph(prev_sampledata->sampletime - graph_start),
kb_to_graph(1000000.0 - top),
time_to_graph(sampledata->sampletime - prev_sampledata->sampletime),
kb_to_graph(top - bottom));
bottom = top;
}
break;
}
}
while ((cross_place = ps->sample->cross)) {
ps = ps->sample->cross->ps_new;
ps->sample = cross_place;
if (ps->sample->pss > (100 * arg_scale_y)) {
top = bottom + ps->sample->pss;
svg(" <rect class=\"clrw\" style=\"fill: %s\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
colorwheel[ps->pid % 12],
time_to_graph(prev_sampledata->sampletime - graph_start),
kb_to_graph(1000000.0 - top),
time_to_graph(sampledata->sampletime - prev_sampledata->sampletime),
kb_to_graph(top - bottom));
bottom = top;
}
}
prev_sampledata = sampledata;
i++;
}
/* overlay all the text labels */
for (i = 1; i < samples ; i++) {
i = 1;
LIST_FOREACH_BEFORE(link, sampledata, head) {
int bottom;
int top;
struct ps_sched_struct *prev_sample;
struct ps_sched_struct *cross_place;
bottom = 0;
top = 0;
/* put all the small pss blocks into the bottom */
ps = ps_first;
ps = ps_first->next_ps;
while (ps->next_ps) {
ps = ps->next_ps;
if (!ps)
continue;
if (ps->sample[i].pss <= (100 * arg_scale_y))
top += ps->sample[i].pss;
};
ps->sample = ps->first;
while (ps->sample->next) {
ps->sample = ps->sample->next;
if (ps->sample->sampledata == sampledata)
break;
}
if (ps->sample->sampledata == sampledata) {
if (ps->sample->pss <= (100 * arg_scale_y))
top += ps->sample->pss;
break;
}
}
while ((cross_place = ps->sample->cross)) {
ps = ps->sample->cross->ps_new;
ps->sample = cross_place;
if (ps->sample->pss <= (100 * arg_scale_y))
top += ps->sample->pss;
}
bottom = top;
/* now plot the ones that are of significant size */
ps = ps_first;
while (ps->next_ps) {
prev_sample = ps->sample;
ps = ps->next_ps;
if (!ps)
continue;
ps->sample = ps->first;
while (ps->sample->next) {
prev_sample = ps->sample;
ps->sample = ps->sample->next;
if (ps->sample->sampledata == sampledata)
break;
}
/* don't draw anything smaller than 2mb */
if (ps->sample[i].pss > (100 * arg_scale_y)) {
top = bottom + ps->sample[i].pss;
if (ps->sample->sampledata == sampledata) {
if (ps->sample->pss > (100 * arg_scale_y)) {
top = bottom + ps->sample->pss;
/* draw a label with the process / PID */
if ((i == 1) || (prev_sample->pss <= (100 * arg_scale_y)))
svg(" <text x=\"%.03f\" y=\"%.03f\"><![CDATA[%s]]> [%i]</text>\n",
time_to_graph(sampledata->sampletime - graph_start),
kb_to_graph(1000000.0 - bottom - ((top - bottom) / 2)),
ps->name,
ps->pid);
bottom = top;
}
break;
}
}
while ((cross_place = ps->sample->cross)) {
ps = ps->sample->cross->ps_new;
ps->sample = cross_place;
prev_sample = ps->sample->prev;
if (ps->sample->pss > (100 * arg_scale_y)) {
top = bottom + ps->sample->pss;
/* draw a label with the process / PID */
if ((i == 1) || (ps->sample[i - 1].pss <= (100 * arg_scale_y)))
if ((i == 1) || (prev_sample->pss <= (100 * arg_scale_y)))
svg(" <text x=\"%.03f\" y=\"%.03f\"><![CDATA[%s]]> [%i]</text>\n",
time_to_graph(sampletime[i] - graph_start),
time_to_graph(sampledata->sampletime - graph_start),
kb_to_graph(1000000.0 - bottom - ((top - bottom) / 2)),
ps->name,
ps->pid);
bottom = top;
}
}
i++;
}
/* debug output - full data dump */
@ -400,8 +517,10 @@ static void svg_pss_graph(void) {
svg("<!-- %s [%d] pss=", enc_name, ps->pid);
for (i = 0; i < samples ; i++) {
svg("%d," , ps->sample[i].pss);
ps->sample = ps->first;
while (ps->sample->next) {
ps->sample = ps->sample->next;
svg("%d," , ps->sample->pss);
}
svg(" -->\n");
}
@ -413,6 +532,9 @@ static void svg_io_bi_bar(void) {
double range;
int max_here = 0;
int i;
int k;
struct list_sample_data *start_sampledata = sampledata;
struct list_sample_data *stop_sampledata = sampledata;
svg("<!-- IO utilization graph - In -->\n");
@ -433,54 +555,89 @@ static void svg_io_bi_bar(void) {
svg_graph_box(5);
/* find the max IO first */
for (i = 1; i < samples; i++) {
i = 1;
LIST_FOREACH_BEFORE(link, sampledata, head) {
int start;
int stop;
int diff;
double tot;
start = MAX(i - ((range / 2) - 1), 0);
stop = MIN(i + (range / 2), samples - 1);
diff = (stop - start);
start_sampledata = sampledata;
stop_sampledata = sampledata;
for (k=0;(k<((range/2)-1))&&(start_sampledata->link_next);k++)
start_sampledata = start_sampledata->link_next;
for (k=0;(k<(range/2))&&(stop_sampledata->link_prev);k++)
stop_sampledata = stop_sampledata->link_prev;
tot = (double)(stop_sampledata->blockstat.bi - start_sampledata->blockstat.bi)
/ diff;
tot = (double)(blockstat[stop].bi - blockstat[start].bi)
/ (stop - start);
if (tot > max) {
max = tot;
max_here = i;
}
tot = (double)(blockstat[stop].bo - blockstat[start].bo)
/ (stop - start);
tot = (double)(stop_sampledata->blockstat.bo - start_sampledata->blockstat.bo)
/ diff;
if (tot > max)
max = tot;
i++;
}
/* plot bi */
for (i = 1; i < samples; i++) {
i = 1;
prev_sampledata = head;
LIST_FOREACH_BEFORE(link, sampledata, head) {
int start;
int stop;
int diff;
double tot;
double pbi;
tot = 0;
pbi = 0;
start = MAX(i - ((range / 2) - 1), 0);
stop = MIN(i + (range / 2), samples);
diff = (stop - start);
tot = (double)(blockstat[stop].bi - blockstat[start].bi)
/ (stop - start);
pbi = tot / max;
start_sampledata = sampledata;
stop_sampledata = sampledata;
for (k=0;(k<((range/2)-1))&&(start_sampledata->link_next);k++)
start_sampledata = start_sampledata->link_next;
for (k=0;(k<(range/2))&&(stop_sampledata->link_prev);k++)
stop_sampledata = stop_sampledata->link_prev;
tot = (double)(stop_sampledata->blockstat.bi - start_sampledata->blockstat.bi)
/ diff;
if (max > 0)
pbi = tot / max;
if (pbi > 0.001)
svg("<rect class=\"bi\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
time_to_graph(sampletime[i - 1] - graph_start),
time_to_graph(prev_sampledata->sampletime - graph_start),
(arg_scale_y * 5) - (pbi * (arg_scale_y * 5)),
time_to_graph(sampletime[i] - sampletime[i - 1]),
time_to_graph(sampledata->sampletime - prev_sampledata->sampletime),
pbi * (arg_scale_y * 5));
/* labels around highest value */
if (i == max_here) {
svg(" <text class=\"sec\" x=\"%.03f\" y=\"%.03f\">%0.2fmb/sec</text>\n",
time_to_graph(sampletime[i] - graph_start) + 5,
time_to_graph(sampledata->sampletime - graph_start) + 5,
((arg_scale_y * 5) - (pbi * (arg_scale_y * 5))) + 15,
max / 1024.0 / (interval / 1000000000.0));
}
i++;
prev_sampledata = sampledata;
}
}
@ -489,6 +646,9 @@ static void svg_io_bo_bar(void) {
double range;
int max_here = 0;
int i;
int k;
struct list_sample_data *start_sampledata = sampledata;
struct list_sample_data *stop_sampledata = sampledata;
svg("<!-- IO utilization graph - out -->\n");
@ -509,59 +669,89 @@ static void svg_io_bo_bar(void) {
svg_graph_box(5);
/* find the max IO first */
for (i = 1; i < samples; i++) {
i = 0;
LIST_FOREACH_BEFORE(link, sampledata, head) {
int start;
int stop;
int diff;
double tot;
start = MAX(i - ((range / 2) - 1), 0);
stop = MIN(i + (range / 2), samples - 1);
diff = (stop - start);
tot = (double)(blockstat[stop].bi - blockstat[start].bi)
/ (stop - start);
start_sampledata = sampledata;
stop_sampledata = sampledata;
for (k=0;(k<((range/2)-1))&&(start_sampledata->link_next);k++)
start_sampledata = start_sampledata->link_next;
for (k=0;(k<(range/2))&&(stop_sampledata->link_prev);k++)
stop_sampledata = stop_sampledata->link_prev;
tot = (double)(stop_sampledata->blockstat.bi - start_sampledata->blockstat.bi)
/ diff;
if (tot > max)
max = tot;
tot = (double)(blockstat[stop].bo - blockstat[start].bo)
/ (stop - start);
tot = (double)(stop_sampledata->blockstat.bo - start_sampledata->blockstat.bo)
/ diff;
if (tot > max) {
max = tot;
max_here = i;
}
i++;
}
/* plot bo */
for (i = 1; i < samples; i++) {
prev_sampledata = head;
i=1;
LIST_FOREACH_BEFORE(link, sampledata, head) {
int start;
int stop;
int diff;
double tot;
double pbo;
tot = 0;
pbo = 0;
start = MAX(i - ((range / 2) - 1), 0);
stop = MIN(i + (range / 2), samples);
diff = (stop - start);
tot = (double)(blockstat[stop].bo - blockstat[start].bo)
/ (stop - start);
pbo = tot / max;
start_sampledata = sampledata;
stop_sampledata = sampledata;
for (k=0;(k<((range/2)-1))&&(start_sampledata->link_next);k++)
start_sampledata = start_sampledata->link_next;
for (k=0;(k<(range/2))&&(stop_sampledata->link_prev);k++)
stop_sampledata = stop_sampledata->link_prev;
tot = (double)(stop_sampledata->blockstat.bo - start_sampledata->blockstat.bo)
/ diff;
if (max > 0)
pbo = tot / max;
if (pbo > 0.001)
svg("<rect class=\"bo\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
time_to_graph(sampletime[i - 1] - graph_start),
time_to_graph(prev_sampledata->sampletime - graph_start),
(arg_scale_y * 5) - (pbo * (arg_scale_y * 5)),
time_to_graph(sampletime[i] - sampletime[i - 1]),
time_to_graph(sampledata->sampletime - prev_sampledata->sampletime),
pbo * (arg_scale_y * 5));
/* labels around highest bo value */
if (i == max_here) {
svg(" <text class=\"sec\" x=\"%.03f\" y=\"%.03f\">%0.2fmb/sec</text>\n",
time_to_graph(sampletime[i] - graph_start) + 5,
time_to_graph(sampledata->sampletime - graph_start) + 5,
((arg_scale_y * 5) - (pbo * (arg_scale_y * 5))),
max / 1024.0 / (interval / 1000000000.0));
}
i++;
prev_sampledata = sampledata;
}
}
static void svg_cpu_bar(void) {
int i;
svg("<!-- CPU utilization graph -->\n");
@ -570,7 +760,8 @@ static void svg_cpu_bar(void) {
svg_graph_box(5);
/* bars for each sample, proportional to the CPU util. */
for (i = 1; i < samples; i++) {
prev_sampledata = head;
LIST_FOREACH_BEFORE(link, sampledata, head) {
int c;
double trt;
double ptrt;
@ -578,30 +769,30 @@ static void svg_cpu_bar(void) {
ptrt = trt = 0.0;
for (c = 0; c < cpus; c++)
trt += cpustat[c].sample[i].runtime - cpustat[c].sample[i - 1].runtime;
trt += sampledata->runtime[c] - prev_sampledata->runtime[c];
trt = trt / 1000000000.0;
trt = trt / (double)cpus;
if (trt > 0.0)
ptrt = trt / (sampletime[i] - sampletime[i - 1]);
ptrt = trt / (sampledata->sampletime - prev_sampledata->sampletime);
if (ptrt > 1.0)
ptrt = 1.0;
if (ptrt > 0.001) {
svg("<rect class=\"cpu\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
time_to_graph(sampletime[i - 1] - graph_start),
time_to_graph(prev_sampledata->sampletime - graph_start),
(arg_scale_y * 5) - (ptrt * (arg_scale_y * 5)),
time_to_graph(sampletime[i] - sampletime[i - 1]),
time_to_graph(sampledata->sampletime - prev_sampledata->sampletime),
ptrt * (arg_scale_y * 5));
}
prev_sampledata = sampledata;
}
}
static void svg_wait_bar(void) {
int i;
svg("<!-- Wait time aggregation box -->\n");
@ -611,7 +802,8 @@ static void svg_wait_bar(void) {
svg_graph_box(5);
/* bars for each sample, proportional to the CPU util. */
for (i = 1; i < samples; i++) {
prev_sampledata = head;
LIST_FOREACH_BEFORE(link, sampledata, head) {
int c;
double twt;
double ptwt;
@ -619,31 +811,31 @@ static void svg_wait_bar(void) {
ptwt = twt = 0.0;
for (c = 0; c < cpus; c++)
twt += cpustat[c].sample[i].waittime - cpustat[c].sample[i - 1].waittime;
twt += sampledata->waittime[c] - prev_sampledata->waittime[c];
twt = twt / 1000000000.0;
twt = twt / (double)cpus;
if (twt > 0.0)
ptwt = twt / (sampletime[i] - sampletime[i - 1]);
ptwt = twt / (sampledata->sampletime - prev_sampledata->sampletime);
if (ptwt > 1.0)
ptwt = 1.0;
if (ptwt > 0.001) {
svg("<rect class=\"wait\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
time_to_graph(sampletime[i - 1] - graph_start),
time_to_graph(prev_sampledata->sampletime - graph_start),
((arg_scale_y * 5) - (ptwt * (arg_scale_y * 5))),
time_to_graph(sampletime[i] - sampletime[i - 1]),
time_to_graph(sampledata->sampletime - prev_sampledata->sampletime),
ptwt * (arg_scale_y * 5));
}
prev_sampledata = sampledata;
}
}
static void svg_entropy_bar(void) {
int i;
svg("<!-- entropy pool graph -->\n");
@ -652,13 +844,15 @@ static void svg_entropy_bar(void) {
svg_graph_box(5);
/* bars for each sample, scale 0-4096 */
for (i = 1; i < samples; i++) {
prev_sampledata = head;
LIST_FOREACH_BEFORE(link, sampledata, head) {
/* svg("<!-- entropy %.03f %i -->\n", sampletime[i], entropy_avail[i]); */
svg("<rect class=\"cpu\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
time_to_graph(sampletime[i - 1] - graph_start),
((arg_scale_y * 5) - ((entropy_avail[i] / 4096.) * (arg_scale_y * 5))),
time_to_graph(sampletime[i] - sampletime[i - 1]),
(entropy_avail[i] / 4096.) * (arg_scale_y * 5));
time_to_graph(prev_sampledata->sampletime - graph_start),
((arg_scale_y * 5) - ((sampledata->entropy_avail / 4096.) * (arg_scale_y * 5))),
time_to_graph(sampledata->sampletime - prev_sampledata->sampletime),
(sampledata->entropy_avail / 4096.) * (arg_scale_y * 5));
prev_sampledata = sampledata;
}
}
@ -802,8 +996,8 @@ static void svg_ps_bars(void) {
struct ps_struct *ps;
int i = 0;
int j = 0;
int w;
int pid;
double w = 0.0;
svg("<!-- Process graph -->\n");
@ -816,7 +1010,7 @@ static void svg_ps_bars(void) {
ps = ps_first;
while ((ps = get_next_ps(ps))) {
_cleanup_free_ char *enc_name = NULL;
double endtime;
double starttime;
int t;
@ -828,15 +1022,13 @@ static void svg_ps_bars(void) {
svg("<!-- %s [%i] ppid=%i runtime=%.03fs -->\n", enc_name, ps->pid,
ps->ppid, ps->total);
/* it would be nice if we could use exec_start from /proc/pid/sched,
* but it's unreliable and gives bogus numbers */
starttime = sampletime[ps->first];
starttime = ps->first->sampledata->sampletime;
if (!ps_filter(ps)) {
/* remember where _to_ our children need to draw a line */
ps->pos_x = time_to_graph(starttime - graph_start);
ps->pos_y = ps_to_graph(j+1); /* bottom left corner */
} else {
} else if (ps->parent){
/* hook children to our parent coords instead */
ps->pos_x = ps->parent->pos_x;
ps->pos_y = ps->parent->pos_y;
@ -851,23 +1043,30 @@ static void svg_ps_bars(void) {
continue;
}
endtime = ps->last->sampledata->sampletime;
svg(" <rect class=\"ps\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
time_to_graph(starttime - graph_start),
ps_to_graph(j),
time_to_graph(sampletime[ps->last] - starttime),
time_to_graph(ps->last->sampledata->sampletime - starttime),
ps_to_graph(1));
/* paint cpu load over these */
for (t = ps->first + 1; t < ps->last; t++) {
ps->sample = ps->first;
t = 1;
while (ps->sample->next) {
double rt, prt;
double wt, wrt;
struct ps_sched_struct *prev;
prev = ps->sample;
ps->sample = ps->sample->next;
/* calculate over interval */
rt = ps->sample[t].runtime - ps->sample[t-1].runtime;
wt = ps->sample[t].waittime - ps->sample[t-1].waittime;
rt = ps->sample->runtime - prev->runtime;
wt = ps->sample->waittime - prev->waittime;
prt = (rt / 1000000000) / (sampletime[t] - sampletime[t-1]);
wrt = (wt / 1000000000) / (sampletime[t] - sampletime[t-1]);
prt = (rt / 1000000000) / (ps->sample->sampledata->sampletime - prev->sampledata->sampletime);
wrt = (wt / 1000000000) / (ps->sample->sampledata->sampletime - prev->sampledata->sampletime);
/* this can happen if timekeeping isn't accurate enough */
if (prt > 1.0)
@ -879,33 +1078,34 @@ static void svg_ps_bars(void) {
continue;
svg(" <rect class=\"wait\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
time_to_graph(sampletime[t - 1] - graph_start),
time_to_graph(prev->sampledata->sampletime - graph_start),
ps_to_graph(j),
time_to_graph(sampletime[t] - sampletime[t - 1]),
time_to_graph(ps->sample->sampledata->sampletime - prev->sampledata->sampletime),
ps_to_graph(wrt));
/* draw cpu over wait - TODO figure out how/why run + wait > interval */
svg(" <rect class=\"cpu\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
time_to_graph(sampletime[t - 1] - graph_start),
time_to_graph(prev->sampledata->sampletime - graph_start),
ps_to_graph(j + (1.0 - prt)),
time_to_graph(sampletime[t] - sampletime[t - 1]),
time_to_graph(ps->sample->sampledata->sampletime - prev->sampledata->sampletime),
ps_to_graph(prt));
t++;
}
/* determine where to display the process name */
if (sampletime[ps->last] - sampletime[ps->first] < 1.5)
if ((endtime - starttime) < 1.5)
/* too small to fit label inside the box */
w = ps->last;
w = endtime;
else
w = ps->first;
w = starttime;
/* text label of process name */
svg(" <text x=\"%.03f\" y=\"%.03f\"><![CDATA[%s]]> [%i]<tspan class=\"run\">%.03fs</tspan></text>\n",
time_to_graph(sampletime[w] - graph_start) + 5.0,
time_to_graph(w - graph_start) + 5.0,
ps_to_graph(j) + 14.0,
ps->name,
ps->pid,
(ps->sample[ps->last].runtime - ps->sample[ps->first].runtime) / 1000000000.0);
(ps->last->runtime - ps->first->runtime) / 1000000000.0);
/* paint lines to the parent process */
if (ps->parent) {
/* horizontal part */
@ -934,6 +1134,7 @@ static void svg_ps_bars(void) {
/* make sure we start counting from the point where we actually have
* data: assume that bootchart's first sample is when data started
*/
ps = ps_first;
while (ps->next_ps) {
ps = ps->next_ps;
@ -941,17 +1142,27 @@ static void svg_ps_bars(void) {
break;
}
for (i = ps->first; i < samples - (arg_hz / 2); i++) {
/* need to know last node first */
ps->sample = ps->first;
i = ps->sample->next->sampledata->counter;
while (ps->sample->next && i<(samples-(arg_hz/2))) {
double crt;
double brt;
int c;
int ii;
struct ps_sched_struct *sample_hz;
ps->sample = ps->sample->next;
sample_hz = ps->sample;
for (ii=0;((ii<(int)arg_hz/2)&&(ps->sample->next));ii++)
sample_hz = sample_hz->next;
/* subtract bootchart cpu utilization from total */
crt = 0.0;
for (c = 0; c < cpus; c++)
crt += cpustat[c].sample[i + ((int)arg_hz / 2)].runtime - cpustat[c].sample[i].runtime;
brt = ps->sample[i + ((int)arg_hz / 2)].runtime - ps->sample[i].runtime;
crt += sample_hz->sampledata->runtime[c] - ps->sample->sampledata->runtime[c];
brt = sample_hz->runtime - ps->sample->runtime;
/*
* our definition of "idle":
*
@ -959,7 +1170,7 @@ static void svg_ps_bars(void) {
* defaults to 4.0%, which experimentally, is where atom idles
*/
if ((crt - brt) < (interval / 2.0)) {
idletime = sampletime[i] - graph_start;
idletime = ps->sample->sampledata->sampletime - graph_start;
svg("\n<!-- idle detected at %.03f seconds -->\n",
idletime);
svg("<line class=\"idle\" x1=\"%.03f\" y1=\"%.03f\" x2=\"%.03f\" y2=\"%.03f\" />\n",
@ -973,6 +1184,7 @@ static void svg_ps_bars(void) {
idletime);
break;
}
i++;
}
}