Buggy network connection causes very low system responsiveness
Jeff Spaleta
jspaleta at gmail.com
Tue Apr 1 22:00:05 UTC 2008
2008/4/1 Martin Sourada <martin.sourada at gmail.com>:
> So, I restored the /etc/hosts and the problem didn't went away (even
> after computer restart). Also it didn't get emptied again. However,
> recently I switched over to rawhide and have yet to see if the problem
> still persists.
>
I have a reproducible situation on F8 that you might find interesting.
1) boot up into a NetworkManager enabled desktop,
2) connect to a wireless network that has dhcp
3) gnome-terminal behaves normally
4) disable NM
5) connect a wired network cable for eth0
6) enable the network service configured to start eth0 using dhcp to a
different network segment than the NM wireless connected to.
7) watch gnome-terminal take +30 seconds to spawn a window.
My /etc/hosts file never changes during these operations, and the
environment variable $HOSTNAME continues to be localhost.localdomain, which
is defined in /etc/hosts
I am able to consistently reproduce the slow application problem, and doing
an strace it appears to be related to socket file access in /tmp/.ICE-unix
Forcibly restarting the X server fixes the problem, and on relogin things
work.
I'm pretty sure this isn't suppose to be happening if I switch from NM to
legacy network script while logged in. But my F8 install could be jacked up
in a way that I'm not aware, so I need other people to to reproduce.
-jef
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