Arch Linux

ianhoolihan

Member

Registered: 2011-08-20

Posts: 85

[solved by wicd] Networkmanager causing high cpu usage

Hi all,

My problem is a lot of cpu is being used, as in the top output below:

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND
  935 polkitd   20   0  158908 109304   4264 R 26.91 10.71  36:30.79 polkitd
  413 dbus      20   0    3296   1656   1152 S 18.61 0.162  23:01.50 dbus-daemon
12150 root      20   0   43884   7808   5764 S 14.62 0.765   0:58.76 NetworkManager

When I systemctl stop NetworkManager.service, top now gives:

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND
  413 dbus      20   0    3296   1656   1152 S 3.986 0.162  23:24.18 dbus-daemon
  935 polkitd   20   0  160756 111436   4264 S 1.993 10.92  37:04.13 polkitd

Firstly, is this cpu usage normal? At this stage, I assume it itsn't. I've read a few bug reports, but a lot of them are beyond my knowledge. I'm not aware of whether there is a problem with networkmanager (if it is abnormal) but the high cpu usage of dbus-daemon (and maybe polkitd) is something to do with a program (presumably networkmanager here) asking them to do lots of pointless stuff. (Sorry, that's not at all clear, but that's the best way I can understand it!)

I'm on an old ThinkpadX40, and currently using LXDE. I did note that something similar also occurred here: https://bbs.archlinux.org/viewtopic.php?id=118028

At this stage, I'm hoping there is something I can do to fix this, and any help would be appreciated. (If you need any diagnostic stuff, please let me know the commands to get it = ) ) Otherwise I'm contemplating moving to wicd or netcfg, which I assume will be lighter anyway, but may also solve the above pickles.

EDIT: I moved to wicd (surpisingly easy!), and all problems are fixed. Not a solution to the original problem, but I guess I can mark this as "solved" given I've found an alternative.

Ianhoolihan

Last edited by ianhoolihan (2013-04-10 09:35:58)