Re: spice-gtk / remote viewer leaks (gobs of) memory - possibly related to animated mouse cursor?

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On 05/06/2014 06:04 AM, Marc-André Lureau wrote:
Hi

----- Original Message -----
On 05/05/2014 04:10 PM, Marc-André Lureau wrote:
Hi

----- Original Message -----
Any way to easily trace memory leaks in remote-viewer?  A naive attempt
at "valgrind remote-viewer spice://blah" didn't turn up anything in
particular.
Have you tried with massif? It usually gives pretty good hints.
Here is "ms_print" output. I've never used massif before, is this helpful?
This massif profile doesn't show a large memory usage or any obvious leak.

Are you looking at virtual or resident (RSS) memory usage? (remember that
only RSS really "count")
Yes, RSS goes over 2GB easily with 8 hours of usage.

I have changed spice-widget.c as follows:

@@ -2205,14 +2210,15 @@
                                                    (GdkPixbufDestroyNotify)g_free, NULL);
         d->mouse_hotspot.x = hot_x;
         d->mouse_hotspot.y = hot_y;
-        cursor = gdk_cursor_new_from_pixbuf(gtk_widget_get_display(GTK_WIDGET(display)),
-                                            d->mouse_pixbuf, hot_x, hot_y);
+        cursor = gdk_cursor_new_for_display(gtk_widget_get_display(GTK_WIDGET(display)), GDK_FLEUR);
+        //cursor = gdk_cursor_new_from_pixbuf(gtk_widget_get_display(GTK_WIDGET(display)),
+        //                                   d->mouse_pixbuf, hot_x, hot_y);
     } else
         g_warn_if_reached();


And, while it's true I only get a hand cursor no matter what, there is no leak. I can wiggle the mouse to my heart's content and the RSS stays flat (after initially increasing to fill the local tile cache). There is 100% no doubt in my mind that there is a leak here. Although the code looks correct to me.

I also tried changing gdk_cursor_unref to g_object_unref but it made no difference.


During this test, I have a desktop I've been logged into all day, but
for the test, I disconnected remote-viewer, ran remote-viewer with
massif and ran a "webdriver" test with google-chrome.  It hit a few
dozen pages with a few seconds wait time with each page.  I wiggled the
mouse cursor over the page as this happened.  Memory usage according to
'ps' exceeded 1.2GB by the end of the test (with valgrind/massif
overhead, of course). Then I exited remote-viewer.

Anything else you want?

Thanks,
David


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