Re: [tlug] Slooooooow down: logs, smartctl, DNS?

[Christian Horn <chorn@example.com>]

On Sun, Jan 16, 2011 at 02:02:35PM +0900, Dave M G wrote:
> 
> I also used the tcpdump method Romeo suggested, and after a few minutes,
> it generated a 116 MB .cab file, which I don't know how to view. I
> thought it would be text, but it's not, so it doesn't open with most
> viewers. How do I look at it?

wireshark could be installed and used for looking at the dumpfile, yet
interpreting this is an other thing..


> At first it seemed like everything was responding quicker and I wondered
> if I got lucky. Then slowly, over time, it got worse again. Usually I
> leave my Mythbuntu machine pretty much running all the time (since I
> want it to come to life when I use the remote control), so whatever is
> the problem either builds up over time, or is possibly inconsistent and
> comes and goes.

Ideas for debugging:

- execute '/sbin/ifconfig' on the machines, watching for interface-
errors etc.

- executing 'ping ip-of-other-host', placing the ip in here of course.
Maybe this already brings up dropped packages, big latencies etc.

- watch the logfiles a bit, i.e. using 'sudo tail -f /var/log/*'


Christian