El dom, 03-12-2017 a las 13:44 +1100, Michael Gratton escribió: > Hi all,
Hey Michael, > Since porting Geary to WebKit2, I have noticed it seems to have been > running hotter than previously when idle. This has also been > reported > by others in Bug 783025[0]. One person noticed using strace that > when > Geary is on the visible desktop, it is calling and returning from > poll() at about 60 times per second, which is a substantial number > of > wakeups for an idle application. 60 times per second and when visible sounds like the paint timer. > This seems to also occur for Epiphany, > but not in other GTK+ apps such as Gitg, or Polari. Hence it looks > like > a WebKit2 issue. Doesn't gitg use webkit2 as well? > I'm noticing it under Wayland, and have a query out in that bug as > to > whether others are seeing it under X11. The poll() rate decreases > when > it is not on the visible desktop, and I've managed to get the rate > down > a bit as well by ensuring Geary is not showing a WebView, but these > aren't terribly useful workarounds. Geary is setting > WEBKIT_DISABLE_COMPOSITING_MODE=1 in main() right after launching, > but > commenting that out doesn't seem to make any difference. Please don't do that, the env var is not expected to be used by applications, only for users/developers as a debug tool. Use webkit_settings_set_hardware_acceleration_policy() instead. > I also tried > commenting out the ~6 JS message handlers that Geary uses for > displaying conversations, but that didn't help either. > > Sysprof shows that most of the work being done when idle is in > g_main_context_prepare() — 21% of the total, g_source_iter() — 17% > of total, and magazine_cache_push_magazine (used by g_slice) — 12%. > Most of the work being done by calls to g_source_iter are being made > from libjavascriptcoregtk-4.0.so — accounting for 13% of the total > work when idle. > > Is this to be expected or is it a bug? File bug report, please. If you can attach strace, sysprof, etc output and anything else that could help to identify the source of the wake ups. Thanks! > Cheers, > //Mike > > > [0] - <https://bugzilla.gnome.org/show_bug.cgi?id=783025> > -- Carlos Garcia Campos http://pgp.rediris.es:11371/pks/lookup?op=get&search=0xF3D322D0EC4582C3
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