Der Begriff bedeutet nicht, dass das U-Boot Atomwaffen mit sich fhrt (siehe dazu U-Boot mit ballistischen Raketen ). This is one case where synchronous API is better than asynchronous. Ein Atom-U-Boot ist ein Unterseeboot, das die Energie fr seinen Antrieb und seine Bordsysteme aus einem oder mehreren Kernreaktoren bezieht, vgl.: Kernenergieantrieb. This means that it may not even register with the session manager until after some other long-running idle callbacks have ran. Sets up the dbus proxy for the session manager asynchronously after claiming a common name (asynchronously) on the bus.This seems to block for ~1s, and seems unnecessary this early in the session. Calls pa_context_connect(), thus starting pulseaudio.To check the backup, intended and default configs takes ~1.5s - even though none of these exist by default. Takes a further ~0.5s iterating over each possible xrandr config file (due to XRR roundtrips), even if it doesn't exist.Calls XRRGetScreenResources 3 times from 3 different plugins (each taking around ~0.5s on Intel hardware).gnome-settings-daemon wastes quite a bit of time before registering with the session manager, and holds up the rest of the session until doing so.This is being fixed upstream by rewriting it in C. zeitgeist-daemon is taking another two seconds, as it's a heavy python process.I suspect this is doing some rather expensive reading of the apt package list, which should be deferred to when needed, or when the CPU gets idle, not done at startup of u-applications-daemon. This manifests in both the compiz process and the activated unity-applications-daemon process. As you can see on the boot chart (this is still with indicator-session removed), the extra dash parts take about 6 seconds of CPU for loading, and then it suddenly pops up. If you press the windows key right after the desktop startup is visually complete, nothing happens for about 8 seconds. Some parts of unity, like the lenses, are already only activated on demand, but are also quite heavy.
#Atom u boot nautilus plus#
Now compiz/unity take about 8 seconds, plus another 3.5 for unity-panel-service, i. unity used about 4 seconds in lucid (mutter plugin mutter's CPU usage for non-unity was negligible).( 856475) (discovered for beta-1 verify for oneiric final) Nautilus CPU usage went from ~ 0.5 s to over 5 seconds due to changes to our icon theme which cause the wallpaper to be read 9 times.
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