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benchmark: add a benchmark for bgo/760267

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Big suprise - GstStructure is faster than GVariant.
This commit is contained in:
Stefan Sauer 2016-01-08 23:06:55 +01:00
parent 788938640d
commit bb40a18413
3 changed files with 95 additions and 1 deletions
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1
tests/benchmarks/.gitignore vendored
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@ -9,4 +9,5 @@ gstclockstress
gstpollstress
gstpoolstress
mass-elements
tracerserialize
*.gcno

3
tests/benchmarks/Makefile.am
View file

@ -8,7 +8,8 @@ noinst_PROGRAMS = \
gstpollstress \
gstpoolstress \
gstclockstress \
gstbufferstress
gstbufferstress \
tracerserialize
LDADD = $(GST_OBJ_LIBS)
AM_CFLAGS = $(GST_OBJ_CFLAGS)

92
tests/benchmarks/tracerserialize.c Normal file
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@ -0,0 +1,92 @@
/* GStreamer
* Copyright (C) 2016 Stefan Sauer <ensonic@users.sf.net>
*
* caps.c: benchmark for caps creation and destruction
*
* 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 FITcreating %d capsNESS 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.
*/
/* to check the sizes run:
*
* GST_DEBUG="default:7" GST_DEBUG_FILE=trace.log ./tracerserialize
*
* grep "log_gst_structure" trace.log >tracerserialize.gststructure.log
* grep "log_g_variant" trace.log >tracerserialize.gvariant.log
*
*/
#include <gst/gst.h>
#define NUM_LOOPS 100000
static void
log_gst_structure (const gchar * name, const gchar * first, ...)
{
va_list var_args;
GstStructure *s;
gchar *l;
va_start (var_args, first);
s = gst_structure_new_valist (name, first, var_args);
l = gst_structure_to_string (s);
GST_TRACE ("%s", l);
g_free (l);
gst_structure_free (s);
va_end (var_args);
}
static void
log_g_variant (const gchar * format, ...)
{
va_list var_args;
GVariant *v;
gchar *l;
va_start (var_args, format);
v = g_variant_new_va (format, NULL, &var_args);
l = g_variant_print (v, FALSE);
GST_TRACE ("%s", l);
g_free (l);
g_variant_unref (v);
va_end (var_args);
}
gint
main (gint argc, gchar * argv[])
{
GstClockTime start, end;
gint i;
gst_init (&argc, &argv);
start = gst_util_get_timestamp ();
for (i = 0; i < NUM_LOOPS; i++) {
log_gst_structure ("name",
"ts", G_TYPE_UINT64, (guint64) 0,
"index", G_TYPE_UINT, 10,
"test", G_TYPE_STRING, "hallo",
"flag", GST_TYPE_PAD_DIRECTION, GST_PAD_SRC, NULL);
}
end = gst_util_get_timestamp ();
g_print ("%" GST_TIME_FORMAT ": GstStructure\n", GST_TIME_ARGS (end - start));
start = gst_util_get_timestamp ();
for (i = 0; i < NUM_LOOPS; i++) {
log_g_variant ("(stusu)", "name", (guint64) 0, 10, "hallo", GST_PAD_SRC);
}
end = gst_util_get_timestamp ();
g_print ("%" GST_TIME_FORMAT ": GVariant\n", GST_TIME_ARGS (end - start));
}