Gentoo Archives: gentoo-user

From: "José Pedro Saraiva" <nocive@×××××.com>
To: gentoo-user@l.g.o
Subject: [gentoo-user] heavy packet loss problem (ifconfig?)
Date: Wed, 13 Jul 2005 15:31:31
Message-Id: 12a67947050713081028cf55b8@mail.gmail.com
1 Hello,
2 I'm quite desperate and have tried just about anything.
3 I'll try to explain it...
4
5 I connect to the net through eth0 and have a masquerading through eth1
6 to my other computers, using shorewall.
7 My server never had any problems of this kind and all was fine until a
8 couple of days ago. I'm experiencing some heavy packet loss when
9 pinging different hosts.
10 I have isolated the problem (at least I think I did) and got to the
11 conclusion that issuing a simple 'ifconfig eth1 down' and leaving eth0
12 up, the packet loss vanishes.
13 Tests were made with all services down (shorewall, sshd, apache2,
14 mysqld, proftpd, sendmail, ...) and with the network cable unplugged
15 from eth1 (so no traffic is being generated through eth1 that could
16 cause packet loss)
17 Here are the statistics:
18
19 - eth1 up -
20 # ping -c 200 google.com
21
22 --- google.com ping statistics ---
23 200 packets transmitted, 104 received, 48% packet loss, time 208227ms
24 rtt min/avg/max/mdev = 152.388/229.520/2016.847/279.805 ms, pipe 3
25
26 - eth1 down -
27 # ping -c 200 google.com
28
29 --- google.com ping statistics ---
30 200 packets transmitted, 200 received, 0% packet loss, time 199175ms
31 rtt min/avg/max/mdev = 147.197/169.978/193.949/8.384 ms
32
33 Both network cards are using the same chipset (RLT8139) loaded as a
34 module in the kernel (2.6.11-hardened-r13).
35 I have tried to replace the network card (with one also using RLT8139)
36 and changing it from IRQ but with no effect.
37 Please help, I've runned out of ideas...
38
39 Thanks in advance!
40 José Pedro
41
42 --
43 gentoo-user@g.o mailing list

Replies

Subject Author
RE: [gentoo-user] heavy packet loss problem (ifconfig?) Dave Nebinger <dnebinger@××××.com>