Linux - NetworkingThis forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.
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However, Browsing usually hangs/stalls on all the clients, then resumes after a few seconds. On lots of websites, but not all the time... I am trying to find out why this is, no luck as yet (any ideas?!) ... Im not sure whether the problem lies on teh clients (default windows xp boxes) or the linux router.
Does anyone have "large routing tables" built into their kernel? would this enhance performance? .. would it hinder it if i added it in to my kernel?
Also, is the "fast network address translation" under advanced routing options a good idea to add in?
First thing I suggest is checking the performance of the dns servers you have listed in /etc/resolv.conf
dig each one with an address from another distant continent and check the reply times.
'man dig' for details
You may have a slow server first in the list. Put the fastest one first.
Time to start adding -j LOG rules in different parts of your script to see what is getting dropped.
Find out if there is a pattern from the entries.
usu LOG entries go to /var/log/messages if you make them '-j LOG --log-level 6 --log-prefix "something " '
well i have LOG'd the FORWARD stuff, and nothing ever gets logged, so assume that is ok .. have LOG'd INPUT stuff, and get a lot of rubbish .. mainly to port 80, 113, etc.. just scans and random rubbish i guess. I was getting some packets (DHCP) from 10.69.16.1, so have specifically allowed them through, and no longer get them .. Doesn't seem to be anything out of the ordinary!
Yes, it does purge,
but with 5 or more clients browsing busy sites with lots of links, images, sponsors etc,sometimes the cache is cleared just seconds before the next request for old data arrives.
This all takes time to reload and clear something else out...
You mentioned you have periods where it all grinds to a halt momentarily.
These types of cache policies can make it seem slower because they are all swapping and clearing at the same time.
You will see that from their own log files.