Hello, I upgraded to an openSuSE 12.1 (kernel 3.1.0-1.2-default) on a small low power consuming CompactPCI system. Unfortunately it came out that the performance of network I/O decreased dramatically.
I know that this is a pretty old ethernet device and I am not sure whether you
still support it. Do you have experience concerning performance on newer Linux
kernels?
Here is what lspci -vv knows about it:
01:04.0 Ethernet controller: Intel Corporation 8255xER/82551IT Fast Ethernet
Controller (rev 10)
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: 66 (2000ns min, 14000ns max), Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 5
Region 0: Memory at f4120000 (32-bit, non-prefetchable) [size=4K]
Region 1: I/O ports at 2000 [size=64]
Region 2: Memory at f4100000 (32-bit, non-prefetchable) [size=128K]
[virtual] Expansion ROM at 10000000 [disabled] [size=64K]
Capabilities: [dc] Power Management version 2
Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA
PME(D0+,D1+,D2+,D3hot+,D3cold-)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=2 PME-
Kernel driver in use: e100
Here is what ethtool knows about it:
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised pause frame use: Symmetric
Advertised auto-negotiation: Yes
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Link partner advertised pause frame use: Symmetric
Link partner advertised auto-negotiation: Yes
Speed: 100Mb/s
Duplex: Full
Port: MII
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: g
Wake-on: g
Current message level: 0x00000007 (7)
drv probe link
Link detected: yes
--
Günter Gebhardt, Dipl.-Ing., M. Systems Eng.
Windtschmidtstraße 12
D-89423 Gundelfingen
+499073997177
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