Is your KDE slooooow? Check your loopback interface


While digging Debian Qt-KDE's bugs, it has become more common to find people reporting that their KDE is very slow. Most of the time (if not every time) it turns out that the loopback interface is down. Sometimes the user did something wrong, sometimes some network manager, but the end result is the same: KDE is terribly slow.

A user [filled a bug upstream](https://bugs.kde.org/show_bug.cgi?id=309047) to ask for a dialogue in KDE that warns the user about this fact. Let's hope it get's implemented :-)
OK, so, how do I check that my lo interface is up?
You can simply run:
[\$ /sbin/ifconfig ]{style="font-family: Courier New, Courier, monospace;"}
[eth0      Link encap:Ethernet  HWaddr 00:1f:c6:ba:70:f3  ]{style="font-family: Courier New, Courier, monospace;"}
[          [](http://www.blogger.com/blogger.g?blogID=6357172297737057475)]{style="font-family: Courier New, Courier, monospace;"}
[ ]{style="font-family: Courier New, Courier, monospace;"}
[lo        Link encap:Local Loopback  ]{style="font-family: Courier New, Courier, monospace;"}
[          inet addr:127.0.0.1  Mask:255.0.0.0]{style="font-family: Courier New, Courier, monospace;"}
[          inet6 addr: ::1/128 Scope:Host]{style="font-family: Courier New, Courier, monospace;"}
[          UP LOOPBACK RUNNING  MTU:16436  Metric:1]{style="font-family: Courier New, Courier, monospace;"}
[          RX packets:1807 errors:0 dropped:0 overruns:0 frame:0]{style="font-family: Courier New, Courier, monospace;"}
[          TX packets:1807 errors:0 dropped:0 overruns:0 carrier:0]{style="font-family: Courier New, Courier, monospace;"}
[          collisions:0 txqueuelen:0 ]{style="font-family: Courier New, Courier, monospace;"}
[          RX bytes:494525 (482.9 KiB)  TX bytes:494525 (482.9 KiB)]{style="font-family: Courier New, Courier, monospace;"}
The last entry "lo" tells us that the interface is up.
In Debian, the file [/etc/network/interfaces]{style="font-family: Courier New, Courier, monospace;"} should have something like:
[\# The loopback network interface]{style="font-family: Courier New, Courier, monospace;"}
[auto lo]{style="font-family: Courier New, Courier, monospace;"}
[iface lo inet loopback]{style="font-family: Courier New, Courier, monospace;"}

So, next time you find a KDE session is slow, you know what to do ;-)

Comments


There are no comments yet.

Add a Comment

You can use the Markdown syntax to format your comment.

Comment Atom Feed