/*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
+
+//config:config BOOTCHARTD
+//config: bool "bootchartd"
+//config: default y
+//config: help
+//config: bootchartd is commonly used to profile the boot process
+//config: for the purpose of speeding it up. In this case, it is started
+//config: by the kernel as the init process. This is configured by adding
+//config: the init=/sbin/bootchartd option to the kernel command line.
+//config:
+//config: It can also be used to monitor the resource usage of a specific
+//config: application or the running system in general. In this case,
+//config: bootchartd is started interactively by running bootchartd start
+//config: and stopped using bootchartd stop.
+//config:
+//config:config FEATURE_BOOTCHARTD_BLOATED_HEADER
+//config: bool "bootchartd"
+//config: default y
+//config: depends on BOOTCHARTD
+//config: help
+//config: Create extended header file compatible with "big" bootchartd.
+//config: "Big" bootchartd is a shell script and it dumps some
+//config: "convenient" info int the header, such as:
+//config: title = Boot chart for `hostname` (`date`)
+//config: system.uname = `uname -srvm`
+//config: system.release = `cat /etc/DISTRO-release`
+//config: system.cpu = `grep '^model name' /proc/cpuinfo | head -1` ($cpucount)
+//config: system.kernel.options = `cat /proc/cmdline`
+//config: This data is not mandatory for bootchart graph generation,
+//config: and is considered bloat. Nevertheless, this option
+//config: makes bootchartd applet to dump a subset of it.
+//config:
+//config:config FEATURE_BOOTCHARTD_CONFIG_FILE
+//config: bool "bootchartd"
+//config: default y
+//config: depends on BOOTCHARTD
+//config: help
+//config: Create extended header file compatible with "big" bootchartd.
+//config: "Big" bootchartd is a shell script and it dumps some
+//config: "convenient" info int the header, such as:
+//config: title = Boot chart for `hostname` (`date`)
+//config: system.uname = `uname -srvm`
+//config: system.release = `cat /etc/DISTRO-release`
+//config: system.cpu = `grep '^model name' /proc/cpuinfo | head -1` ($cpucount)
+//config: system.kernel.options = `cat /proc/cmdline`
+//config: This data is not mandatory for bootchart graph generation,
+//config: and is considered bloat. Nevertheless, this option
+//config: makes bootchartd applet to dump a subset of it.
+
#include "libbb.h"
+/* After libbb.h, since it needs sys/types.h on some systems */
+#include <sys/utsname.h>
#include <sys/mount.h>
#ifndef MS_SILENT
# define MS_SILENT (1 << 15)
#define DO_SIGNAL_SYNC 1
-//Not supported: $PWD/bootchartd.conf and /etc/bootchartd.conf
-
+//$PWD/bootchartd.conf and /etc/bootchartd.conf:
+//supported options:
+//# Sampling period (in seconds)
+//SAMPLE_PERIOD=0.2
+//
+//not yet supported:
//# tmpfs size
//# (32 MB should suffice for ~20 minutes worth of log data, but YMMV)
//TMPFS_SIZE=32m
//
-//# Sampling period (in seconds)
-//SAMPLE_PERIOD=0.2
-//
//# Whether to enable and store BSD process accounting information. The
//# kernel needs to be configured to enable v3 accounting
//# (CONFIG_BSD_PROCESS_ACCT_V3). accton from the GNU accounting utilities
return found_login_process;
}
-static char *make_tempdir(const char *prog)
+static char *make_tempdir(void)
{
char template[] = "/tmp/bootchart.XXXXXX";
char *tempdir = xstrdup(mkdtemp(template));
} else {
xchdir(tempdir);
}
- {
- FILE *header_fp = xfopen("header", "w");
- if (prog)
- fprintf(header_fp, "profile.process = %s\n", prog);
- fputs("version = "BC_VERSION_STR"\n", header_fp);
- fclose(header_fp);
- }
-
return tempdir;
}
-static void do_logging(void)
+static void do_logging(int sample_pariod_us)
{
//# Enable process accounting if configured
//if [ "$PROCESS_ACCOUNTING" = "yes" ]; then
}
fflush_all();
wait_more:
- usleep(200*1000);
+ usleep(sample_pariod_us);
}
// [ -e kernel_pacct ] && accton off
}
-static void finalize(char *tempdir)
+static void finalize(char *tempdir, const char *prog)
{
//# Stop process accounting if configured
//local pacct=
//[ -e kernel_pacct ] && pacct=kernel_pacct
- //(
- // echo "version = $VERSION"
- // echo "title = Boot chart for $( hostname | sed q ) ($( date ))"
- // echo "system.uname = $( uname -srvm | sed q )"
- // echo "system.release = $( sed q /etc/SuSE-release )"
- // echo "system.cpu = $( grep '^model name' /proc/cpuinfo | sed q ) ($cpucount)"
- // echo "system.kernel.options = $( sed q /proc/cmdline )"
- //) >> header
+ FILE *header_fp = xfopen("header", "w");
+
+ if (prog)
+ fprintf(header_fp, "profile.process = %s\n", prog);
+
+ fputs("version = "BC_VERSION_STR"\n", header_fp);
+
+ if (ENABLE_FEATURE_BOOTCHARTD_BLOATED_HEADER) {
+ char *hostname;
+ char *kcmdline;
+ time_t t;
+ struct tm tm_time;
+ /* x2 for possible localized data */
+ char date_buf[sizeof("Mon Jun 21 05:29:03 CEST 2010") * 2];
+ struct utsname unamebuf;
+
+ hostname = safe_gethostname();
+ time(&t);
+ localtime_r(&t, &tm_time);
+ strftime(date_buf, sizeof(date_buf), "%a %b %e %H:%M:%S %Z %Y", &tm_time);
+ fprintf(header_fp, "title = Boot chart for %s (%s)\n", hostname, date_buf);
+ if (ENABLE_FEATURE_CLEAN_UP)
+ free(hostname);
+
+ uname(&unamebuf); /* never fails */
+ /* same as uname -srvm */
+ fprintf(header_fp, "system.uname = %s %s %s %s\n",
+ unamebuf.sysname,
+ unamebuf.release,
+ unamebuf.version,
+ unamebuf.machine
+ );
+
+ //system.release = `cat /etc/DISTRO-release`
+ //system.cpu = `grep '^model name' /proc/cpuinfo | head -1` ($cpucount)
+
+ kcmdline = xmalloc_open_read_close("/proc/cmdline", NULL);
+ /* kcmdline includes trailing "\n" */
+ fprintf(header_fp, "system.kernel.options = %s", kcmdline);
+ if (ENABLE_FEATURE_CLEAN_UP)
+ free(kcmdline);
+ }
+ fclose(header_fp);
/* Package log files */
system("tar -zcf /var/log/bootchart.tgz header *.log"); // + $pacct
int bootchartd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int bootchartd_main(int argc UNUSED_PARAM, char **argv)
{
+ int sample_pariod_us;
pid_t parent_pid, logger_pid;
smallint cmd;
enum {
cmd = CMD_PID1;
}
- /* Here we are in START or INIT state. Create logger child: */
+ /* Here we are in START or INIT state */
+
+ /* Read config file: */
+ sample_pariod_us = 200 * 1000;
+ if (ENABLE_FEATURE_BOOTCHARTD_CONFIG_FILE) {
+ char* token[2];
+ parser_t *parser = config_open2("/etc/bootchartd.conf" + 5, fopen_for_read);
+ if (!parser)
+ parser = config_open2("/etc/bootchartd.conf", fopen_for_read);
+ while (config_read(parser, token, 2, 0, "#=", PARSE_NORMAL & ~PARSE_COLLAPSE)) {
+ if (strcmp(token[0], "SAMPLE_PERIOD") == 0 && token[1])
+ sample_pariod_us = atof(token[1]) * 1000000;
+ }
+ config_close(parser);
+ }
+
+ /* Create logger child: */
logger_pid = fork_or_rexec(argv);
if (logger_pid == 0) { /* child */
if (cmd == CMD_PID1 && !getenv("PATH"))
putenv((char*)bb_PATH_root_path);
- tempdir = make_tempdir(cmd == CMD_START ? argv[2] : NULL);
- do_logging();
- finalize(tempdir);
+ tempdir = make_tempdir();
+ do_logging(sample_pariod_us);
+ finalize(tempdir, cmd == CMD_START ? argv[2] : NULL);
return EXIT_SUCCESS;
}
projects / oweals / busybox.git / commitdiff