Default desktop is too cpu hungry when idle.
Affects | Status | Importance | Assigned to | Milestone | ||
---|---|---|---|---|---|---|
Ubuntu | ||||||
Dapper |
Invalid
|
Undecided
|
Unassigned | |||
linux (Ubuntu) |
Fix Released
|
Medium
|
Unassigned | |||
xorg (Ubuntu) |
Invalid
|
Undecided
|
Unassigned |
Bug Description
Fully updated dapper as of 15/5/06.
An empty gnome desktop apart from top running in a terminal:
Tasks: 118 total, 1 running, 117 sleeping, 0 stopped, 0 zombie
Cpu(s): 24.8% us, 17.7% sy, 0.0% ni, 46.0% id, 0.0% wa, 6.2% hi, 5.3% si
Mem: 1294440k total, 395256k used, 899184k free, 9472k buffers
Swap: 979924k total, 0k used, 979924k free, 230976k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
6130 root 15 0 31168 20m 7548 S 4.0 1.7 0:21.80 Xorg
6301 brian 15 0 33896 14m 9368 S 4.0 1.1 0:09.54 gnome-terminal
6262 brian 16 0 55128 9032 7260 S 3.3 0.7 0:04.87 gnome-cups-icon
6411 brian 16 0 2200 1136 856 R 2.0 0.1 0:01.61 top
4667 cupsys 16 0 4060 1872 1368 S 1.3 0.1 0:06.28 cupsd
6288 brian 15 0 29260 9452 7584 S 0.7 0.7 0:01.53 gnome-netstatus
What on earth is 24% CPU use?
Another distro shows more like 1% in the same situation. Something is wrong.
Is this an xorg thing?
brian@ecthelion:~$ grep Driver /etc/X11/xorg.conf
Driver "kbd"
Driver "mouse"
Driver "synaptics"
Driver "wacom"
Driver "wacom"
Driver "wacom"
Driver "nvidia"
It also happens with nv driver.
This is on an acer laptop, 1.6MHz Pentium M. I had to raise the cpu limit on powernowd to get it to step down to 800KHz.
Hmm..
See also a recent discussion on backports-users @ lists.backports.org about xorg cpu heaviness.