Re: Performance data for nautilus
- From: Alexander Larsson <alexl redhat com>
- To: Anand Subramanian <anand subra wipro com>
- Cc: desktop-devel-list gnome org, <gtk-devel-list gnome org>
- Subject: Re: Performance data for nautilus
- Date: Fri, 18 Oct 2002 11:35:17 -0400 (EDT)
On Wed, 16 Oct 2002, Anand Subramanian wrote:
> Hello everyone.
>
> On a sequel to the gedit performance data, we are attaching the
> performance report for nautilus. The forte and quantify tools were used
> to collect performance data. The attached html report details the
> nautilus test scenarios, a brief analysis and links to the performance
> data. Please do get back to us in case you require any additional
> information.
Very interesting. As usual it shows up GObject at its worst. I fixed a
leak in nautilus and a couple of places that were excessively typesafe,
but a lot of this is hard to fix.
I've attached the interesting data for gtype.c. One thing that strikes me
is:
* *********************************************************
* Function: g_type_check_instance_is_a
* Called: 1106240 times
* Function time: 121654830 cycles ( 2.25% of .root.)
* Function+descendants time: 344618647 cycles ( 6.37% of .root.)
* Distribution to Callers:
* 203845 times (18.63% of f+d time) g_object_ref
* 210290 times (19.22% of f+d time) g_object_unref
* *********************************************************
It seems a full 2.4% of the nautilus execution time is spent making sure
that what you pass to g_object_ref/unref() is actually GObjects.
I'm not sure it's really worth that. Maybe we should change G_IS_OBJECT to
g_type_fundamental (((GTypeInstance *)(instance))->g_class->g_type) ==
G_TYPE_OBJECT. Or maybe we should just totally dump the typecheck?
Other interesting data:
* *********************************************************
* Function: g_type_check_instance_is_a
* Called: 1106240 times
* Function time: 121654830 cycles ( 2.25% of .root.)
* Function+descendants time: 344618647 cycles ( 6.37% of .root.)
* Distribution to Callers:
* 38801 times ( 3.47% of f+d time) gtk_widget_unref
* 38797 times ( 3.47% of f+d time) gtk_widget_ref
* *********************************************************
Since these are deprecated and just chain up to g_object_ref/unref i think
we shoudl remove the
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
The only thing these protect against is passing valid objects that are not
widgets to gtk_widget_ref/unref, something i consider unlikely.
* *********************************************************
* Function: g_type_check_instance_cast
* Called: 915215 times
* Function time: 120808380 cycles ( 2.23% of .root.)
* Function+descendants time: 303024736 cycles ( 5.61% of .root.)
* Distribution to Callers:
* 20905 times ( 2.28% of f+d time) gdk_event_translate
* 38552 times ( 4.20% of f+d time) pango_fontset_simple_get_font
* 93995 times (10.24% of f+d time) gtk_widget_event_internal
* 62804 times ( 6.98% of f+d time) gtk_signal_emit
* *********************************************************
These are small fish compared to the ref/unrefs, but they still stick out
a bit to much.
--
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Alexander Larsson Red Hat, Inc
alexl redhat com alla lysator liu se
He's an unconventional overambitious master criminal gone bad. She's a cynical
nymphomaniac barmaid married to the Mob. They fight crime!
Run 1
* *********************************************************
* Function: lookup_type_node_I
* Called: 7504454 times
* Function time: 265918521 cycles ( 4.92% of .root.)
* Function+descendants time: 265918521 cycles ( 4.92% of .root.)
* Distribution to Callers:
* 1830430 times (23.77% of f+d time) g_type_check_instance_cast
* 747494 times (10.20% of f+d time) g_type_is_a
* 1160343 times (15.78% of f+d time) type_check_is_value_type_U
* 1136897 times (15.32% of f+d time) g_type_value_table_peek
* 2212220 times (29.50% of f+d time) g_type_check_instance_is_a
* *********************************************************
* *********************************************************
* Function: type_node_check_conformities_UorL
* Called: 2443819 times
* Function time: 198645181 cycles ( 3.67% of .root.)
* Function+descendants time: 198752566 cycles ( 3.68% of .root.)
* Distribution to Callers:
* 6 times ( 0.00% of f+d time) type_node_is_a_L
* 2443813 times (100.00% of f+d time) type_node_conforms_to_U
* *********************************************************
* *********************************************************
* Function: type_node_conforms_to_U
* Called: 2443813 times
* Function time: 119746837 cycles ( 2.21% of .root.)
* Function+descendants time: 318498643 cycles ( 5.89% of .root.)
* Distribution to Callers:
* 576 times ( 0.02% of f+d time) g_type_check_class_is_a
* 48165 times ( 1.97% of f+d time) g_type_check_class_cast
* 915215 times (37.37% of f+d time) g_type_check_instance_cast
* 373747 times (15.27% of f+d time) g_type_is_a
* 1106110 times (45.37% of f+d time) g_type_check_instance_is_a
* *********************************************************
* *********************************************************
* Function: g_type_is_a
* Called: 373747 times
* Function time: 31394076 cycles ( 0.58% of .root.)
* Function+descendants time: 107161740 cycles ( 1.98% of .root.)
* Distribution to Callers:
* 123118 times (33.90% of f+d time) g_type_check_value_holds
* 78467 times (20.70% of f+d time) g_signal_emit_valist
* 167478 times (44.15% of f+d time) g_value_type_compatible
* *********************************************************
* *********************************************************
* Function: g_type_check_instance_is_a
* Called: 1106240 times
* Function time: 121654830 cycles ( 2.25% of .root.)
* Function+descendants time: 344618647 cycles ( 6.37% of .root.)
* Distribution to Callers:
* 12960 times ( 1.16% of f+d time) nautilus_icon_canvas_item_hit_test_rectangle
* 18722 times ( 1.67% of f+d time) nautilus_file_compare_for_sort_internal
* 28123 times ( 2.51% of f+d time) pango_ft2_font_get_cache_glyph_data
* 17219 times ( 1.54% of f+d time) gtk_widget_event
* 38801 times ( 3.47% of f+d time) gtk_widget_unref
* 38797 times ( 3.47% of f+d time) gtk_widget_ref
* 13792 times ( 1.26% of f+d time) g_object_get_qdata
* 62804 times ( 5.61% of f+d time) gtk_signal_emit
* 203845 times (18.63% of f+d time) g_object_ref
* 210290 times (19.22% of f+d time) g_object_unref
* *********************************************************
* *********************************************************
* Function: g_type_check_instance_cast
* Called: 915215 times
* Function time: 120808380 cycles ( 2.23% of .root.)
* Function+descendants time: 303024736 cycles ( 5.61% of .root.)
* Distribution to Callers:
* 14282 times ( 1.56% of f+d time) gnome_canvas_group_draw
* 27567 times ( 3.00% of f+d time) fm_icon_container_compare_icons
* 9361 times ( 1.02% of f+d time) fm_icon_view_compare_files
* 9465 times ( 1.03% of f+d time) get_icon_view
* 20905 times ( 2.28% of f+d time) gdk_event_translate
* 38552 times ( 4.20% of f+d time) pango_fontset_simple_get_font
* 8993 times ( 1.00% of f+d time) get_size_groups
* 10743 times ( 1.17% of f+d time) gdk_x11_draw_segments
* 9502 times ( 1.06% of f+d time) gtk_object_get_data_by_id
* 17207 times ( 1.87% of f+d time) gtk_widget_event
* 93995 times (10.24% of f+d time) gtk_widget_event_internal
* 12516 times ( 1.38% of f+d time) gtk_grab_notify_foreach
* 62804 times ( 6.98% of f+d time) gtk_signal_emit
* *********************************************************
Run 2:
* *********************************************************
* Function: lookup_type_node_I
* Called: 4103986 times
* Function time: 144444113 cycles ( 4.27% of .root.)
* Function+descendants time: 144444113 cycles ( 4.27% of .root.)
* Distribution to Callers:
* 317540 times ( 7.87% of f+d time) g_type_is_a
* 465900 times (11.47% of f+d time) g_type_value_table_peek
* 473279 times (11.70% of f+d time) type_check_is_value_type_U
* 1182076 times (28.27% of f+d time) g_type_check_instance_cast
* 1349690 times (33.09% of f+d time) g_type_check_instance_is_a
* *********************************************************
* *********************************************************
* Function: type_node_check_conformities_UorL
* Called: 1474848 times
* Function time: 119955353 cycles ( 3.54% of .root.)
* Function+descendants time: 120068916 cycles ( 3.55% of .root.)
* Distribution to Callers:
* 6 times ( 0.00% of f+d time) type_node_is_a_L
* 1474842 times (100.00% of f+d time) type_node_conforms_to_U
* *********************************************************
* *********************************************************
* Function: type_node_conforms_to_U
* Called: 1474842 times
* Function time: 72267258 cycles ( 2.13% of .root.)
* Function+descendants time: 192335414 cycles ( 5.68% of .root.)
* Distribution to Callers:
* 558 times ( 0.04% of f+d time) g_type_check_class_is_a
* 49631 times ( 3.35% of f+d time) g_type_check_class_cast
* 591038 times (39.97% of f+d time) g_type_check_instance_cast
* 158770 times (10.76% of f+d time) g_type_is_a
* 674845 times (45.88% of f+d time) g_type_check_instance_is_a
* *********************************************************
* *********************************************************
* Function: g_type_is_a
* Called: 158770 times
* Function time: 13335820 cycles ( 0.39% of .root.)
* Function+descendants time: 45398381 cycles ( 1.34% of .root.)
* Distribution to Callers:
* 35571 times (23.04% of f+d time) g_type_check_value_holds
* 34578 times (21.61% of f+d time) g_signal_emit_valist
* 83139 times (51.85% of f+d time) g_value_type_compatible
* *********************************************************
* *********************************************************
* Function: g_type_check_instance_is_a
* Called: 675085 times
* Function time: 74226606 cycles ( 2.19% of .root.)
* Function+descendants time: 210270960 cycles ( 6.21% of .root.)
* Distribution to Callers:
* 8016 times ( 1.17% of f+d time) gdk_draw_points
* 8389 times ( 1.23% of f+d time) fm_icon_view_compare_files
* 16778 times ( 2.46% of f+d time) nautilus_file_compare_for_sort_internal
* 11546 times ( 1.69% of f+d time) pango_ft2_font_get_cache_glyph_data
* 8390 times ( 1.23% of f+d time) get_icon_view
* 7352 times ( 1.10% of f+d time) g_param_spec_unref
* 8061 times ( 1.21% of f+d time) g_param_spec_ref
* 9778 times ( 1.43% of f+d time) gtk_object_get_data_by_id
* 10526 times ( 1.54% of f+d time) gtk_widget_unref
* 10519 times ( 1.54% of f+d time) gtk_widget_ref
* 12404 times ( 1.86% of f+d time) g_object_get_qdata
* 19016 times ( 2.79% of f+d time) gtk_signal_emit
* 106759 times (15.99% of f+d time) g_object_ref
* 111014 times (16.63% of f+d time) g_object_unref
* *********************************************************
* *********************************************************
* Function: g_type_check_instance_cast
* Called: 591038 times
* Function time: 78017016 cycles ( 2.30% of .root.)
* Function+descendants time: 195727938 cycles ( 5.78% of .root.)
* Distribution to Callers:
* 6012 times ( 1.01% of f+d time) gdk_x11_draw_points
* 5875 times ( 0.99% of f+d time) gnome_canvas_group_draw
* 22770 times ( 3.84% of f+d time) fm_icon_container_compare_icons
* 8389 times ( 1.41% of f+d time) fm_icon_view_compare_files
* 8390 times ( 1.41% of f+d time) get_icon_view
* 12434 times ( 2.10% of f+d time) gdk_event_translate
* 9879 times ( 1.67% of f+d time) gtk_widget_propagate_hierarchy_changed_recurse
* 9887 times ( 1.68% of f+d time) gtk_widget_unparent
* 18322 times ( 3.09% of f+d time) pango_fontset_simple_get_font
* 9450 times ( 1.59% of f+d time) real_queue_resize
* 6975 times ( 1.18% of f+d time) _gtk_container_queue_resize
* 9250 times ( 1.59% of f+d time) get_size_groups
* 9894 times ( 1.69% of f+d time) gtk_grab_notify_foreach
* 8780 times ( 1.48% of f+d time) gtk_widget_propagate_state
* 12912 times ( 2.18% of f+d time) gdk_x11_gc_set_values
* 9466 times ( 1.60% of f+d time) _gdk_x11_gc_flush
* 19016 times ( 3.27% of f+d time) gtk_signal_emit
* 8608 times ( 1.45% of f+d time) gtk_object_dispose
* *********************************************************
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