+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright (C) 2009-2013 Intel Corporation
-
- Authors:
- Auke Kok <auke-jan.h.kok@intel.com>
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
- ***/
-
-/***
-
- Many thanks to those who contributed ideas and code:
- - Ziga Mahkovec - Original bootchart author
- - Anders Norgaard - PyBootchartgui
- - Michael Meeks - bootchart2
- - Scott James Remnant - Ubuntu C-based logger
- - Arjan van der Ven - for the idea to merge bootgraph.pl functionality
-
- ***/
-
-#include <sys/resource.h>
-#include <stdio.h>
-#include <signal.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <time.h>
-#include <getopt.h>
-#include <limits.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdbool.h>
-#include "systemd/sd-journal.h"
-
-#include "util.h"
-#include "fileio.h"
-#include "macro.h"
-#include "conf-parser.h"
-#include "strxcpyx.h"
-#include "path-util.h"
-#include "store.h"
-#include "svg.h"
-#include "bootchart.h"
-#include "list.h"
-
-static int exiting = 0;
-
-#define DEFAULT_SAMPLES_LEN 500
-#define DEFAULT_HZ 25.0
-#define DEFAULT_SCALE_X 100.0 /* 100px = 1sec */
-#define DEFAULT_SCALE_Y 20.0 /* 16px = 1 process bar */
-#define DEFAULT_INIT ROOTLIBEXECDIR "/systemd"
-#define DEFAULT_OUTPUT "/run/log"
-
-/* graph defaults */
-bool arg_entropy = false;
-bool arg_initcall = true;
-bool arg_relative = false;
-bool arg_filter = true;
-bool arg_show_cmdline = false;
-bool arg_show_cgroup = false;
-bool arg_pss = false;
-bool arg_percpu = false;
-int arg_samples_len = DEFAULT_SAMPLES_LEN; /* we record len+1 (1 start sample) */
-double arg_hz = DEFAULT_HZ;
-double arg_scale_x = DEFAULT_SCALE_X;
-double arg_scale_y = DEFAULT_SCALE_Y;
-
-char arg_init_path[PATH_MAX] = DEFAULT_INIT;
-char arg_output_path[PATH_MAX] = DEFAULT_OUTPUT;
-
-static void signal_handler(int sig) {
- exiting = 1;
-}
-
-#define BOOTCHART_CONF "/etc/systemd/bootchart.conf"
-
-#define BOOTCHART_MAX (16*1024*1024)
-
-static void parse_conf(void) {
- char *init = NULL, *output = NULL;
- const ConfigTableItem items[] = {
- { "Bootchart", "Samples", config_parse_int, 0, &arg_samples_len },
- { "Bootchart", "Frequency", config_parse_double, 0, &arg_hz },
- { "Bootchart", "Relative", config_parse_bool, 0, &arg_relative },
- { "Bootchart", "Filter", config_parse_bool, 0, &arg_filter },
- { "Bootchart", "Output", config_parse_path, 0, &output },
- { "Bootchart", "Init", config_parse_path, 0, &init },
- { "Bootchart", "PlotMemoryUsage", config_parse_bool, 0, &arg_pss },
- { "Bootchart", "PlotEntropyGraph", config_parse_bool, 0, &arg_entropy },
- { "Bootchart", "ScaleX", config_parse_double, 0, &arg_scale_x },
- { "Bootchart", "ScaleY", config_parse_double, 0, &arg_scale_y },
- { "Bootchart", "ControlGroup", config_parse_bool, 0, &arg_show_cgroup },
- { "Bootchart", "PerCPU", config_parse_bool, 0, &arg_percpu },
- { NULL, NULL, NULL, 0, NULL }
- };
-
- config_parse_many(BOOTCHART_CONF,
- CONF_DIRS_NULSTR("systemd/bootchart.conf"),
- NULL, config_item_table_lookup, items, true, NULL);
-
- if (init != NULL)
- strscpy(arg_init_path, sizeof(arg_init_path), init);
- if (output != NULL)
- strscpy(arg_output_path, sizeof(arg_output_path), output);
-}
-
-static void help(void) {
- printf("Usage: %s [OPTIONS]\n\n"
- "Options:\n"
- " -r --rel Record time relative to recording\n"
- " -f --freq=FREQ Sample frequency [%g]\n"
- " -n --samples=N Stop sampling at [%d] samples\n"
- " -x --scale-x=N Scale the graph horizontally [%g] \n"
- " -y --scale-y=N Scale the graph vertically [%g] \n"
- " -p --pss Enable PSS graph (CPU intensive)\n"
- " -e --entropy Enable the entropy_avail graph\n"
- " -o --output=PATH Path to output files [%s]\n"
- " -i --init=PATH Path to init executable [%s]\n"
- " -F --no-filter Disable filtering of unimportant or ephemeral processes\n"
- " -C --cmdline Display full command lines with arguments\n"
- " -c --control-group Display process control group\n"
- " --per-cpu Draw each CPU utilization and wait bar also\n"
- " -h --help Display this message\n\n"
- "See bootchart.conf for more information.\n",
- program_invocation_short_name,
- DEFAULT_HZ,
- DEFAULT_SAMPLES_LEN,
- DEFAULT_SCALE_X,
- DEFAULT_SCALE_Y,
- DEFAULT_OUTPUT,
- DEFAULT_INIT);
-}
-
-static int parse_argv(int argc, char *argv[]) {
-
- enum {
- ARG_PERCPU = 0x100,
- };
-
- static const struct option options[] = {
- {"rel", no_argument, NULL, 'r' },
- {"freq", required_argument, NULL, 'f' },
- {"samples", required_argument, NULL, 'n' },
- {"pss", no_argument, NULL, 'p' },
- {"output", required_argument, NULL, 'o' },
- {"init", required_argument, NULL, 'i' },
- {"no-filter", no_argument, NULL, 'F' },
- {"cmdline", no_argument, NULL, 'C' },
- {"control-group", no_argument, NULL, 'c' },
- {"help", no_argument, NULL, 'h' },
- {"scale-x", required_argument, NULL, 'x' },
- {"scale-y", required_argument, NULL, 'y' },
- {"entropy", no_argument, NULL, 'e' },
- {"per-cpu", no_argument, NULL, ARG_PERCPU},
- {}
- };
- int c, r;
-
- if (getpid() == 1)
- opterr = 0;
-
- while ((c = getopt_long(argc, argv, "erpf:n:o:i:FCchx:y:", options, NULL)) >= 0)
- switch (c) {
-
- case 'r':
- arg_relative = true;
- break;
- case 'f':
- r = safe_atod(optarg, &arg_hz);
- if (r < 0)
- log_warning_errno(r, "failed to parse --freq/-f argument '%s': %m",
- optarg);
- break;
- case 'F':
- arg_filter = false;
- break;
- case 'C':
- arg_show_cmdline = true;
- break;
- case 'c':
- arg_show_cgroup = true;
- break;
- case 'n':
- r = safe_atoi(optarg, &arg_samples_len);
- if (r < 0)
- log_warning_errno(r, "failed to parse --samples/-n argument '%s': %m",
- optarg);
- break;
- case 'o':
- path_kill_slashes(optarg);
- strscpy(arg_output_path, sizeof(arg_output_path), optarg);
- break;
- case 'i':
- path_kill_slashes(optarg);
- strscpy(arg_init_path, sizeof(arg_init_path), optarg);
- break;
- case 'p':
- arg_pss = true;
- break;
- case 'x':
- r = safe_atod(optarg, &arg_scale_x);
- if (r < 0)
- log_warning_errno(r, "failed to parse --scale-x/-x argument '%s': %m",
- optarg);
- break;
- case 'y':
- r = safe_atod(optarg, &arg_scale_y);
- if (r < 0)
- log_warning_errno(r, "failed to parse --scale-y/-y argument '%s': %m",
- optarg);
- break;
- case 'e':
- arg_entropy = true;
- break;
- case ARG_PERCPU:
- arg_percpu = true;
- break;
- case 'h':
- help();
- return 0;
- case '?':
- if (getpid() != 1)
- return -EINVAL;
- else
- return 0;
- default:
- assert_not_reached("Unhandled option code.");
- }
-
- if (arg_hz <= 0) {
- log_error("Frequency needs to be > 0");
- return -EINVAL;
- }
-
- return 1;
-}
-
-static int do_journal_append(char *file) {
- _cleanup_free_ char *bootchart_message = NULL;
- _cleanup_free_ char *bootchart_file = NULL;
- _cleanup_free_ char *p = NULL;
- _cleanup_close_ int fd = -1;
- struct iovec iovec[5];
- int r, j = 0;
- ssize_t n;
-
- bootchart_file = strappend("BOOTCHART_FILE=", file);
- if (!bootchart_file)
- return log_oom();
-
- IOVEC_SET_STRING(iovec[j++], bootchart_file);
- IOVEC_SET_STRING(iovec[j++], "MESSAGE_ID=9f26aa562cf440c2b16c773d0479b518");
- IOVEC_SET_STRING(iovec[j++], "PRIORITY=7");
- bootchart_message = strjoin("MESSAGE=Bootchart created: ", file, NULL);
- if (!bootchart_message)
- return log_oom();
-
- IOVEC_SET_STRING(iovec[j++], bootchart_message);
-
- p = malloc(10 + BOOTCHART_MAX);
- if (!p)
- return log_oom();
-
- memcpy(p, "BOOTCHART=", 10);
-
- fd = open(file, O_RDONLY|O_CLOEXEC);
- if (fd < 0)
- return log_error_errno(errno, "Failed to open bootchart data \"%s\": %m", file);
-
- n = loop_read(fd, p + 10, BOOTCHART_MAX, false);
- if (n < 0)
- return log_error_errno(n, "Failed to read bootchart data: %m");
-
- iovec[j].iov_base = p;
- iovec[j].iov_len = 10 + n;
- j++;
-
- r = sd_journal_sendv(iovec, j);
- if (r < 0)
- log_error_errno(r, "Failed to send bootchart: %m");
-
- return 0;
-}
-
-int main(int argc, char *argv[]) {
- static struct list_sample_data *sampledata;
- _cleanup_closedir_ DIR *proc = NULL;
- _cleanup_free_ char *build = NULL;
- _cleanup_fclose_ FILE *of = NULL;
- _cleanup_close_ int sysfd = -1;
- struct ps_struct *ps_first;
- double graph_start;
- double log_start;
- double interval;
- char output_file[PATH_MAX];
- char datestr[200];
- int pscount = 0;
- int n_cpus = 0;
- int overrun = 0;
- time_t t = 0;
- int r, samples;
- struct ps_struct *ps;
- struct rlimit rlim;
- struct list_sample_data *head;
- struct sigaction sig = {
- .sa_handler = signal_handler,
- };
-
- parse_conf();
-
- r = parse_argv(argc, argv);
- if (r < 0)
- return EXIT_FAILURE;
-
- if (r == 0)
- return EXIT_SUCCESS;
-
- /*
- * If the kernel executed us through init=/usr/lib/systemd/systemd-bootchart, then
- * fork:
- * - parent execs executable specified via init_path[] (/usr/lib/systemd/systemd by default) as pid=1
- * - child logs data
- */
- if (getpid() == 1) {
- if (fork()) {
- /* parent */
- execl(arg_init_path, arg_init_path, NULL);
- }
- }
- argv[0][0] = '@';
-
- rlim.rlim_cur = 4096;
- rlim.rlim_max = 4096;
- (void) setrlimit(RLIMIT_NOFILE, &rlim);
-
- /* start with empty ps LL */
- ps_first = new0(struct ps_struct, 1);
- if (!ps_first) {
- log_oom();
- return EXIT_FAILURE;
- }
-
- /* handle TERM/INT nicely */
- sigaction(SIGHUP, &sig, NULL);
-
- interval = (1.0 / arg_hz) * 1000000000.0;
-
- if (arg_relative)
- graph_start = log_start = gettime_ns();
- else {
- struct timespec n;
- double uptime;
-
- clock_gettime(CLOCK_BOOTTIME, &n);
- uptime = (n.tv_sec + (n.tv_nsec / (double) NSEC_PER_SEC));
-
- log_start = gettime_ns();
- graph_start = log_start - uptime;
- }
-
- if (graph_start < 0.0) {
- log_error("Failed to setup graph start time.\n\n"
- "The system uptime probably includes time that the system was suspended. "
- "Use --rel to bypass this issue.");
- return EXIT_FAILURE;
- }
-
- LIST_HEAD_INIT(head);
-
- /* main program loop */
- for (samples = 0; !exiting && samples < arg_samples_len; samples++) {
- int res;
- double sample_stop;
- struct timespec req;
- time_t newint_s;
- long newint_ns;
- double elapsed;
- double timeleft;
-
- sampledata = new0(struct list_sample_data, 1);
- if (sampledata == NULL) {
- log_oom();
- return EXIT_FAILURE;
- }
-
- sampledata->sampletime = gettime_ns();
- sampledata->counter = samples;
-
- if (sysfd < 0)
- sysfd = open("/sys", O_RDONLY|O_CLOEXEC);
-
- if (!build) {
- if (parse_env_file("/etc/os-release", NEWLINE, "PRETTY_NAME", &build, NULL) == -ENOENT)
- parse_env_file("/usr/lib/os-release", NEWLINE, "PRETTY_NAME", &build, NULL);
- }
-
- if (proc)
- rewinddir(proc);
- else
- proc = opendir("/proc");
-
- /* wait for /proc to become available, discarding samples */
- if (proc) {
- r = log_sample(proc, samples, ps_first, &sampledata, &pscount, &n_cpus);
- if (r < 0)
- return EXIT_FAILURE;
- }
-
- sample_stop = gettime_ns();
-
- elapsed = (sample_stop - sampledata->sampletime) * 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;
- }
- log_error_errno(errno, "nanosleep() failed: %m");
- return EXIT_FAILURE;
- }
- } else {
- overrun++;
- /* calculate how many samples we lost and scrap them */
- arg_samples_len -= (int)(newint_ns / interval);
- }
- LIST_PREPEND(link, head, sampledata);
- }
-
- /* do some cleanup, close fd's */
- ps = ps_first;
- while (ps->next_ps) {
- ps = ps->next_ps;
- ps->schedstat = safe_close(ps->schedstat);
- ps->sched = safe_close(ps->sched);
- if (ps->smaps) {
- fclose(ps->smaps);
- ps->smaps = NULL;
- }
- }
-
- if (!of) {
- t = time(NULL);
- r = strftime(datestr, sizeof(datestr), "%Y%m%d-%H%M", localtime(&t));
- assert_se(r > 0);
-
- snprintf(output_file, PATH_MAX, "%s/bootchart-%s.svg", arg_output_path, datestr);
- of = fopen(output_file, "we");
- }
-
- if (!of) {
- log_error("Error opening output file '%s': %m\n", output_file);
- return EXIT_FAILURE;
- }
-
- r = svg_do(of, strna(build), head, ps_first,
- samples, pscount, n_cpus, graph_start,
- log_start, interval, overrun);
-
- if (r < 0) {
- log_error_errno(r, "Error generating svg file: %m\n");
- return EXIT_FAILURE;
- }
-
- log_info("systemd-bootchart wrote %s\n", output_file);
-
- r = do_journal_append(output_file);
- if (r < 0)
- return EXIT_FAILURE;
-
- /* nitpic cleanups */
- ps = ps_first->next_ps;
- while (ps->next_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->cgroup);
- free(old->sample);
- free(old);
- }
-
- free(ps->cgroup);
- 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)
- log_warning("systemd-boochart: sample time overrun %i times\n", overrun);
-
- return 0;
-}
~ianmdlvl / elogind.git / blobdiff