[CentOS] Slow network

Jeff Howell
Wed, 16 Sep 2009 15:31:48 -0000

ethtool eth0
and
lsmod

would be helpful as well.

centos at 911networks.com wrote:
> Hi,
>
> I have problem with a Centos 5.3 computer. The networking is very
> slow. The networking card is a RealTek 1GigE.
>
> I plugged an Ubuntu laptop on the same cable and port with an Intel
> GigE, and it's about 8 to 10 times faster. So the problem is likely to
> be with the CentOS config.
>
> Any suggestion on how to track down the problem with speed.
>
> I have checked the packets with wireshark, no problem.
>
> Here's my ethtool eth0 output:
>
>         Advertised auto-negotiation: Yes
>         Speed: 1000Mb/s
>         Duplex: Full
>
> Here's ifconfig eth0
>
> eth0      Link encap:Ethernet  HWaddr 00:06:7B:00:14:16
>           inet addr:192.168.2.103  Bcast:192.168.2.255  Mask:255.255.255.0
>           inet6 addr: fe80::206:7bff:fe00:1416/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:3139398 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:2890605 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:4048643591 (3.7 GiB)  TX bytes:257250846 (245.3 MiB)
>
> Any suggestion?
>
>

--
Jeff Howell
Sr. Linux Administrator
Media News Group interactive
303.563.6394 jhowell at medianewsgroup.com