Linux - NetworkingThis forum is for any issue related to networks or networking.
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After installing Slackware 13 and configuring it as a router, I'm getting very slow internet speeds on my clients. It takes forever to connect to a website or downloading 100mb bin file also takes forever. On the Slackware box the speed is fine though. When I boot from my previous Slackware 12 drive, the speed on the clients is ok again.
I have compared config files from my old and new installation and haven't found a difference. from other posts I learnt that disabling IPv6 by adding it to the blacklist could help. But this didn't help me either. I have also compared a traceroute on both installations. This also doesn't show a (big) difference.
The only difference I have found is that in my Slackware 13 setup the following modules are loaded while with my old Slackware 12 lsmod is empty.
The only thing I can think of is a missing option in the kernel. I have used the huge-smp from the Slackware DVD, assuming this would have all the important stuff enabled by default. It this right?
Some additional info:
eth0: nVidia Corporation MCP51 Gb onboard Gb NIC, connected to LAN (static)
eth1: 3COM 3C2000 Gb NIC, connected to cable modem (dhcp)
dhcpd is running to configure clients in the network
arno-firewall installed
files I have compared with my old (working) system:
/etc/resolv.conf
/etc/rc.d/rc.inet1.conf
/etc/dhcpd.conf
/etc/arno-iptables-firewall/firewall.conf
/etc/rc.d/rc.local
Any advice how and where to proceed would be very much appreciated!
Cheers,
Robbert
Last edited by eRJe; 01-25-2010 at 08:44 AM.
Reason: added some extra info
I set up a gate to a client.
I also used Slackware 13. I don't remember if I tested the speed, but they didn't complain about any problems. The kernel is also huge-smp, from CD.
I've been reading about the 3c940 driver, which is used by the 3com NIC. Seems to be causing a lot of problems with other people. Perhaps this is now also affecting me. Although the driver didn't give me a problem with my old Slackware 12 installation.
I'm currently trying to find out how I could ditch that driver and use an alternative instead.
Well, comparing my old Slackware 12 installation with the new one, I was convinced that the 3com and the new driver combination was giving me troubles. Reading all sorts of similar problems with this 3com, gave me a pretty good feeling that my problems would disappear once I had the 3com replaced. So I bought a new Intel gigabit NIC, installed, rebuilt the kernel with the appropriate driver... Same problem!
Then I was hoping that the onboard NIC on my ASUS board was giving me this headache. Put back the 3com, together with the Intel NIC, disabled the onboard, rebuilt kernel... Same problem!
I'm out of idea's. When I open firefox to go to google, it takes anywhere between 5 en 20 seconds to load. Search commands seem to go faster and other website also load pretty fast. But not as fast as it used to...
Anyone some clever idea what I could check?
ps resolve.conf is configured by DHCP and is the same as on the old system
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