diff options
Diffstat (limited to 'src/bootchart/bootchart.c')
-rw-r--r-- | src/bootchart/bootchart.c | 533 |
1 files changed, 0 insertions, 533 deletions
diff --git a/src/bootchart/bootchart.c b/src/bootchart/bootchart.c deleted file mode 100644 index 1625d51fa8..0000000000 --- a/src/bootchart/bootchart.c +++ /dev/null @@ -1,533 +0,0 @@ -/*-*- 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; - 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; - - /* - * 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 (timeleft > 0) { - struct timespec req; - - req.tv_sec = (time_t)(timeleft / 1000000000.0); - req.tv_nsec = (long)(timeleft - (req.tv_sec * 1000000000.0)); - - 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)(-timeleft / 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"); - 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-bootchart: sample time overrun %i times\n", overrun); - - return 0; -} |