Lite-On/Netgear FA310TX test

[Robert Olsson]

Here is a quick test of transmitting performance of the new Netgear FA310FX
equipped with the new Lite-On chip.

As a comparison a DEC Tulip-based (SMC) board was used.

The test was done with the FASTROUTE path. Each run injected 100000 64 byte 
packets at more or less at wire speed. Packets were received on eth0 and 
sent on eth1. The eth1 was the new Netgear FA310FX in run 1-2 and a Tulip-
based SMC in run 3-4.

-------------------------------------------------------------------------------
Transmitting With Lite-On chip

tulip.c:v0.90 10/20/98 becker@cesdis.gsfc.nasa.gov+v0.189 981104 FASTROUTE/HW_FLOWCONTROL
eth0: Digital DS21140 Tulip at 0xc000, 00 e0 29 00 bd 56, IRQ 10.
eth1: Lite-On 82c168 PNIC at 0xb800, 00 a0 cc 39 e6 8b, IRQ 11.

1:st Run

Duration 678664 nsec, 100000 packets sent. IPG = 965 nsec, cpu_speed = 233 
Iface   MTU Met  RX-OK RX-ERR RX-DRP RX-OVR  TX-OK TX-ERR TX-DRP TX-OVR Flags
eth0   1500   0 100006      0      0      0      6      0      0      0 BRU
eth1   1500   0      5      0      0      0  62694    189      0      0 BRU

2:nd Run

Duration 678680 nsec, 100000 packets sent. IPG = 965 nsec, cpu_speed = 233 
Iface   MTU Met  RX-OK RX-ERR RX-DRP RX-OVR  TX-OK TX-ERR TX-DRP TX-OVR Flags
eth0   1500   0 200006      0      0      0      6      0      0      0 BRU
eth1   1500   0      5      0      0      0 124067    393      0      0 BRU

-------------------------------------------------------------------------------
Transmitting with DEC chip

tulip.c:v0.90 10/20/98 becker@cesdis.gsfc.nasa.gov+v0.189 981104 FASTROUTE/HW_FLOWCONTROL
eth0: Digital DS21140 Tulip at 0xc000, 00 e0 29 00 bd 56, IRQ 10.
eth1: Digital DS21140 Tulip at 0xb800, 00 00 c0 4a 3a f3, IRQ 11.

3:rd Run

Duration 678617 nsec, 100000 packets sent. IPG = 965 nsec, cpu_speed = 233 
Iface   MTU Met  RX-OK RX-ERR RX-DRP RX-OVR  TX-OK TX-ERR TX-DRP TX-OVR Flags
eth0   1500   0 100009      0      0      0      9      0      0      0 BRU
eth1   1500   0      4      0      0      0  98632      1      0      0 BRU

4:th Run

Duration 678618 nsec, 100000 packets sent. IPG = 965 nsec, cpu_speed = 233 
Iface   MTU Met  RX-OK RX-ERR RX-DRP RX-OVR  TX-OK TX-ERR TX-DRP TX-OVR Flags
eth0   1500   0 200009      0      0      0      9      0      0      0 BRU
eth1   1500   0      4      0      0      0 198626      1      0      0 BRU

-------------------------------------------------------------------------------
Estimated routing throughput (best run taken) in packets per second:

Lite-On:         62694/0.678664 =  92378 PPS
DEC Tulip:       99994/0.678618 = 147349 PPS

Seems like the Tulip chip can transmit at wire speed with 64 byte packets but 
not Lite-On.

-------------------------------------------------------------------------------
Used equipment: ASUS P2B, PII at 392 Mhz with 112 Mhz bus.



						--ro