Guys,
This is a new one on me. I have been using the onboard LAN
(RTL-8139/8139C/8139C+ (rev 10)) for several years and always got great
transfer rates:
01:0b.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL-8139/8139C/8139C+ (rev 10)
Subsystem: Giga-byte Technology GA-7VM400M/7VT600 Motherboard
Flags: bus master, medium devsel, latency 32, IRQ 16
I/O ports at 8000 [size=256]
Memory at e8000000 (32-bit, non-prefetchable) [size=256]
Capabilities: [50] Power Management version 2
Kernel driver in use: 8139too
Kernel modules: 8139too, 8139cp
10:02 providence:~/arch/pkg/new-110718/virtualbox_bin> rsync -uav --progress
virtualbox_bin-4.0.12-1-i686.pkg.tar.xz phoenix:/srv/http/dl/arch/i686
sending incremental file list
virtualbox_bin-4.0.12-1-i686.pkg.tar.xz
55685508 100% 11.59MB/s 0:00:04 (xfer#1, to-check=0/1)
sent 55692427 bytes received 31 bytes 10125901.45 bytes/sec
total size is 55685508 speedup is 1.00
I was having intermittent lockups during large file transfers (memtest is
fine), so I thought I would change the NIC. I installed a 3Com Corporation
3c595 100BaseTX [Vortex] card and tested the throughput. The throughput is 1/3
what I was getting with the Realtek card:
01:07.0 Ethernet controller: 3Com Corporation 3c595 100BaseTX [Vortex]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 248 (750ns min, 2000ns max)
Interrupt: pin A routed to IRQ 19
Region 0: I/O ports at 8000 [size=32]
[virtual] Expansion ROM at 80000000 [disabled] [size=64K]
Kernel driver in use: 3c59x
Kernel modules: 3c59x
12:47 providence:~/arch/pkg/new-110718/virtualbox_bin> rsync -uav --progress
virtualbox_bin-4.0.12-1-i686.pkg.tar.xz phoenix:~/tmp
sending incremental file list
virtualbox_bin-4.0.12-1-i686.pkg.tar.xz
55685508 100% 3.27MB/s 0:00:16 (xfer#1, to-check=0/1)
sent 55692427 bytes received 31 bytes 3182426.17 bytes/sec
total size is 55685508 speedup is 1.00
I searched the forums and I've tried ethtool in setting speed, duplex and
autoneg, but it makes no difference. i.e.:
ethtool -s eth0 speed 100 duplex full autoneg off
What else can I try to get this card working correctly? All light
indications on the card and the switch it is connected to show a 100TX
connection is being made. What say the gurus?
--
David C. Rankin, J.D.,P.E.
