Commit fc9392c1 authored by Stefan Sauer's avatar Stefan Sauer
Browse files

rusage: add a new rusage tracer

The tracer hooks up to all probes and logs resource usage figures.
parent ff7ba1eb
......@@ -604,6 +604,9 @@ AC_CHECK_FUNCS([strcasestr])
AC_CHECK_FUNCS([gmtime_r])
AC_CHECK_FUNCS([localtime_r])
AC_CHECK_FUNCS([sigaction])
AC_CHECK_FUNCS([getrusage])
AM_CONDITIONAL(HAVE_GETRUSAGE, test "x$ac_cv_func_getrusage" = "xyes")
AC_CHECK_HEADERS([sys/resource.h])
dnl check for fseeko()
AC_FUNC_FSEEKO
......
plugin_LTLIBRARIES = libgstcoretracers.la
if HAVE_GETRUSAGE
RUSAGE_SOURCES = gstrusage.c
else
RUSAGE_SOURCES =
endif
libgstcoretracers_la_DEPENDENCIES = $(top_builddir)/gst/libgstreamer-@GST_API_VERSION@.la
libgstcoretracers_la_SOURCES = \
gstlog.c \
$(RUSAGE_SOURCES) \
gststats.c \
gsttracers.c
......@@ -16,6 +23,7 @@ libgstcoretracers_la_LIBTOOLFLAGS = $(GST_PLUGIN_LIBTOOLFLAGS)
noinst_HEADERS = \
gstlog.h \
gstrusage.h \
gststats.h
CLEANFILES = *.gcno *.gcda *.gcov *.gcov.out
......
/* GStreamer
* Copyright (C) 2013 Stefan Sauer <ensonic@users.sf.net>
*
* gstrusage.c: tracing module that logs resource usage stats
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "gstrusage.h"
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
GST_DEBUG_CATEGORY_STATIC (gst_rusage_debug);
#define GST_CAT_DEFAULT gst_rusage_debug
#define _do_init \
GST_DEBUG_CATEGORY_INIT (gst_rusage_debug, "rusage", 0, "rusage tracer");
#define gst_rusage_tracer_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstRUsageTracer, gst_rusage_tracer, GST_TYPE_TRACER,
_do_init);
typedef struct
{
/* time spend in this thread */
GstClockTime treal;
guint max_cpuload;
} GstThreadStats;
static void gst_rusage_tracer_invoke (GstTracer * self, GstTracerHookId id,
GstTracerMessageId mid, va_list var_args);
/* logging */
static void
log_trace (GstStructure * s)
{
gchar *data;
// TODO(ensonic): use a GVariant?
data = gst_structure_to_string (s);
GST_TRACE ("%s", data);
g_free (data);
gst_structure_free (s);
}
/* data helper */
static void
free_thread_stats (gpointer data)
{
g_slice_free (GstThreadStats, data);
}
static void
gst_rusage_tracer_class_init (GstRUsageTracerClass * klass)
{
GstTracerClass *gst_tracer_class = GST_TRACER_CLASS (klass);
gst_tracer_class->invoke = gst_rusage_tracer_invoke;
}
static void
gst_rusage_tracer_init (GstRUsageTracer * self)
{
g_object_set (self, "mask", GST_TRACER_HOOK_ALL, NULL);
self->threads = g_hash_table_new_full (NULL, NULL, NULL, free_thread_stats);
}
static void
gst_rusage_tracer_invoke (GstTracer * obj, GstTracerHookId hid,
GstTracerMessageId mid, va_list var_args)
{
GstRUsageTracer *self = GST_RUSAGE_TRACER_CAST (obj);
guint64 treal = va_arg (var_args, guint64);
GstThreadStats *stats;
gpointer thread_id = g_thread_self ();
guint cpuload = 0;
struct rusage ru;
GstClockTime tusersys = G_GUINT64_CONSTANT (0);
// FIXME(ensonic): not threadsafe
static GstClockTime last_ts = G_GUINT64_CONSTANT (0);
getrusage (RUSAGE_SELF, &ru);
/* get stats record for current thread */
if (!(stats = g_hash_table_lookup (self->threads, thread_id))) {
stats = g_slice_new0 (GstThreadStats);
g_hash_table_insert (self->threads, thread_id, stats);
}
#ifdef HAVE_CLOCK_GETTIME
{
struct timespec now;
if (!clock_gettime (CLOCK_PROCESS_CPUTIME_ID, &now)) {
tusersys = GST_TIMESPEC_TO_TIME (now);
} else {
GST_WARNING ("clock_gettime (CLOCK_PROCESS_CPUTIME_ID,...) failed.");
tusersys =
GST_TIMEVAL_TO_TIME (ru.ru_utime) + GST_TIMEVAL_TO_TIME (ru.ru_stime);
}
/* cpu time per thread */
if (!clock_gettime (CLOCK_THREAD_CPUTIME_ID, &now)) {
stats->treal = GST_TIMESPEC_TO_TIME (now);
} else {
GST_WARNING ("clock_gettime (CLOCK_THREAD_CPUTIME_ID,...) failed.");
stats->treal += GST_CLOCK_DIFF (last_ts, treal);
}
}
#else
tusersys =
GST_TIMEVAL_TO_TIME (ru.ru_utime) + GST_TIMEVAL_TO_TIME (ru.ru_stime);
/* crude way to meassure time spend in which thread */
stats->treal += GST_CLOCK_DIFF (last_ts, treal);
#endif
/* remember last timestamp for percentage calculations */
last_ts = treal;
/* FIXME: how can we take cpu-frequency scaling into account?
* - looking at /sys/devices/system/cpu/cpu0/cpufreq/
* scale_factor=scaling_max_freq/scaling_cur_freq
* - as a workaround we can switch it via /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
* cpufreq-selector -g performance
* cpufreq-selector -g ondemand
*/
cpuload =
(guint) gst_util_uint64_scale (tusersys, G_GINT64_CONSTANT (100), treal);
log_trace (gst_structure_new ("rusage", "ts", G_TYPE_UINT64, treal, "thread-id", G_TYPE_UINT, GPOINTER_TO_UINT (thread_id), "cpuload", G_TYPE_UINT, cpuload, "treal", G_TYPE_UINT64, stats->treal, /* time in thread */
"tsum", G_TYPE_UINT64, tusersys, /* time in process */
NULL));
}
/* GStreamer
* Copyright (C) 2013 Stefan Sauer <ensonic@users.sf.net>
*
* gstrusage.h: tracing module that logs resource usage stats
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_RUSAGE_TRACER_H__
#define __GST_RUSAGE_TRACER_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_RUSAGE_TRACER \
(gst_rusage_tracer_get_type())
#define GST_RUSAGE_TRACER(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RUSAGE_TRACER,GstRUsageTracer))
#define GST_RUSAGE_TRACER_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RUSAGE_TRACER,GstRUsageTracerClass))
#define GST_IS_RUSAGE_TRACER(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RUSAGE_TRACER))
#define GST_IS_RUSAGE_TRACER_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RUSAGE_TRACER))
#define GST_RUSAGE_TRACER_CAST(obj) ((GstRUsageTracer *)(obj))
typedef struct _GstRUsageTracer GstRUsageTracer;
typedef struct _GstRUsageTracerClass GstRUsageTracerClass;
/**
* GstRUsageTracer:
*
* Opaque #GstRUsageTracer data structure
*/
struct _GstRUsageTracer {
GstTracer parent;
/*< private >*/
GHashTable *threads;
};
struct _GstRUsageTracerClass {
GstTracerClass parent_class;
/* signals */
};
G_GNUC_INTERNAL GType gst_rusage_tracer_get_type (void);
G_END_DECLS
#endif /* __GST_RUSAGE_TRACER_H__ */
......@@ -25,6 +25,7 @@
#include <gst/gst.h>
#include "gstlog.h"
#include "gstrusage.h"
#include "gststats.h"
static gboolean
......@@ -32,6 +33,10 @@ plugin_init (GstPlugin * plugin)
{
if (!gst_tracer_register (plugin, "log", gst_log_tracer_get_type ()))
return FALSE;
#ifdef HAVE_GETRUSAGE
if (!gst_tracer_register (plugin, "rusage", gst_rusage_tracer_get_type ()))
return FALSE;
#endif
if (!gst_tracer_register (plugin, "stats", gst_stats_tracer_get_type ()))
return FALSE;
return TRUE;
......
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