Public bug reported:
Binary package hint: linux-image-2.6.22-12-generic
Network download is very slow on machine running generic gutsy on AMD
Athlon(tm) 64 X2 Dual Core with forcedeth network driver.
Here is a typical iperf run:
$ iperf -c 192.168.1.50 -d
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
------------------------------------------------------------
Client connecting to 192.168.1.50, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[ 5] local 192.168.1.101 port 37835 connected with 192.168.1.50 port 5001
[ 4] local 192.168.1.101 port 5001 connected with 192.168.1.50 port 56946
[ 5] 0.0-10.0 sec 48.4 MBytes 40.6 Mbits/sec
[ 4] 0.0-10.2 sec 1.57 MBytes 1.29 Mbits/sec
Ifconfig shows RX packet errors:
$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:1A:A0:53:4D:FB
inet addr:192.168.1.101 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:73886 errors:3443 dropped:0 overruns:0 frame:3391
TX packets:108585 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:27746730 (26.4 MB) TX bytes:140126662 (133.6 MB)
Interrupt:16 Base address:0x4000
Pertinent excerpts from lshw:
*-cpu
description: CPU
product: AMD Athlon(tm) 64 X2 Dual Core Processor 4000+
*-bridge
description: Ethernet interface
product: MCP61 Ethernet
vendor: nVidia Corporation
physical id: 7
bus info: [EMAIL PROTECTED]:00:07.0
logical name: eth0
version: a2
serial: 00:1a:a0:53:4d:fb
size: 100000000
capacity: 100000000
width: 32 bits
clock: 66MHz
capabilities: bridge pm msi ht bus_master cap_list ethernet physical
mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=forcedeth
driverversion=0.60 duplex=full ip=192.168.1.101 latency=0 link=yes
maxlatency=20 mingnt=1 module=forcedeth multicast=yes port=MII speed=100MB/s
$ uname -a
Linux steveb-desktop 2.6.22-12-generic #1 SMP Sun Sep 23 18:11:30 GMT 2007 i686
GNU/Linux
In addition to the default boot options following boot options were tried which
had no effect on iperf stats speed:
noapictimer irqpoll
noapic nolapic
noapic acpi=noirq
noapic acpi=off
noapictimer
noapic acpi=noirq nolapic
The following boot options segfaulted on boot:
clock=pmtmr notsc
notsc
Disabling fglrx had no effect on iperf stats.
The slow download has been occured attached to 2 different routers and
different cables.
** Affects: linux-source-2.6.22 (Ubuntu)
Importance: Undecided
Status: New
--
Network downlink slow on Dell Inspiron 531S
https://bugs.launchpad.net/bugs/148738
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