Messages in this thread | | | From | "Lisong Xu" <> | Subject | Fw: Intel PRO/1000 NIC | Date | Fri, 19 Sep 2003 16:30:10 -0400 |
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Hello,
Just in case you have a similar problem.
The possible reason is that the on-board Inter 1000 chip of Dell PowerEdge 1600SC is Intel 82540EM, which is running PCI 32/33 or PCI 32/66.
Lisong
----- Original Message ----- From: Lisong Xu To: netdev@oss.sgi.com ; linux-kernel@vger.kernel.org Sent: Monday, September 15, 2003 10:35 AM Subject: Intel PRO/1000 NIC
Hello,
I am sending UDP data from one PC to another PC directly through a cross cable. The NIC of sender is Intel® PRO/1000 MT Server Adapter, and the NIC of receiver is on-board Intel PRO/1000 (Dell PowerEdge 1600SC).
After tuning the kernel and driver parameters, the sender can send data at 1Gbps. But the receiver can only receive data at 620Mbps. (see the following ifconfig messages, 30 seconds test)
*********** Sender ******************* eth1 Link encap:Ethernet HWaddr 00:07:E9:17:84:36 inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:9000 Metric:1 RX packets:111 errors:0 dropped:0 overruns:0 frame:0 TX packets:418072 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:30000 RX bytes:26193 (25.5 Kb) TX bytes:3759596626 (3585.4 Mb) Interrupt:24 Base address:0xccc0 Memory:fcd00000-fcd20000 **************Receiver*********************** eth0 Link encap:Ethernet HWaddr 00:C0:9F:1E:3A:46 inet addr:192.168.1.101 Bcast:192.168.1.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:9000 Metric:1 RX packets:261355 errors:156688 dropped:156688 overruns:156688 frame:0 <---- Look here!!!!! TX packets:97 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:30000 RX bytes:2350019728 (2241.1 Mb) TX bytes:22821 (22.2 Kb) Interrupt:11 Base address:0xecc0 Memory:fe100000-fe120000 ***************************************************
My questions is why so many packets are "errors, dropped, overruns". I have adjusted the "TxDescriptors, RxDescriptors, RxIntDelay, RxAbsIntDelay, TxIntDelay, TxAbsIntDelay" for different values, but always got similar result.
Maybe here is not the right email list to send, but I am really frustrated with this problems, and hope to get some suggestions from the experts here.Any suggestion is really appreciated!
Lisong
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