ubuntu-phone team mailing list archive
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ubuntu-phone team
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Mailing list archive
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Message #20457
Nice to see you, to see you Nice.
We have a bunch of processes running on the phone, rtkit-daemon (which
isn't actually a rootkit, rt stands for real time and it has something
to do with pulse audio) runs at a nice level of 1, which means it has a
low priority. Then we have a heap of things with nice of 0, and finally
some super priority important things listed here:
63 root 10 -10 0 0 0 S 0.0 0.0 0:00.00
krfcommd
2320 phablet 9 -11 303028 9968 8084 S 0.0 1.0 0:57.88
pulseaudio
16 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 khelper
18 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 netns
19 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 fs_sync
20 root 0 -20 0 0 0 S 0.0 0.0 0:00.38 suspend
23 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kblockd
26 root 0 -20 0 0 0 S 0.0 0.0 0:00.00
cfg80211
28 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 emi_mpu
32 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 crypto
53 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 uether
54 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 binder
62 root 0 -20 0 0 0 S 0.0 0.0 0:00.00
mtk_vibrator
75 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 accdet
77 root 0 -20 0 0 0 S 0.0 0.0 0:00.00
accdet_eint
78 root 0 -20 0 0 0 S 0.0 0.0 0:00.00
accdet_disable
79 root 0 -20 0 0 0 S 0.0 0.0 0:00.00
sensor_polling
95 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 deferwq
96 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 f_mtp
199 root 0 -20 0 0 0 S 0.0 0.0 0:00.00
ext4-dio-unwrit
207 root 0 -20 0 0 0 S 0.0 0.0 0:00.00
ext4-dio-unwrit
223 root 0 -20 0 0 0 S 0.0 0.0 0:00.25 loop0
227 root 0 -20 0 0 0 S 0.0 0.0 0:00.00
ext4-dio-unwrit
367 root 0 -20 0 0 0 S 0.0 0.0 0:00.00
ext4-dio-unwrit
903 root 0 -20 0 0 0 S 0.0 0.0 0:00.00
ext4-dio-unwrit
911 root 0 -20 0 0 0 S 0.0 0.0 0:00.00
ext4-dio-unwrit
1087 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 hci0
1093 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 hci0
1120 root 0 -20 0 0 0 S 0.0 0.0 0:00.00
fm_timer_wq
1123 root 0 -20 0 0 0 S 0.0 0.0 0:00.00
fm_eint_wq
I have no idea what most of those do, but some will be system processes
that do indeed deserve to be given some priority. What I don't appear to
see in the important stuff list is the user interface of the operating
system, the dash, the alt-tab switcher, the launcher side panel. This
seems to me to be likely to allow apps to starve things like the
switcher, leading to apps locking up the screen to the point that you
can't get to the switcher to swipe the broken app away. This looks like
fate of the tablet at the end of the review here
http://www.omgubuntu.co.uk/2016/05/bq-m10-ubuntu-tablet-review-crazy-slow when
the reviewer has a ton of apps loaded and pathwind finally kills it all,
and locks up the UI.
Am I right in my thinking here? Can nice values fix this kind of problem
- having apps at a lower priority than the operating system bits of the UI?
Follow ups
