Re: TCP performance on GBE LAN

From: sai narasimhamurthy
Date: Fri Mar 04 2005 - 16:01:26 EST


Hi,

The output of lspci -v for the GBE is:

========================================================

02:08.0 Ethernet controller: Intel Corp. 82546EB
Gigabit Ethernet Controller (Copper) (rev 01)
Subsystem: Intel Corp. PRO/1000 MT Dual Port
Server Adapter
Flags: bus master, 66Mhz, medium devsel,
latency 32, IRQ 14
Memory at f6020000 (64-bit, non-prefetchable)
[size=128K]
I/O ports at dc40 [size=64]
Capabilities: [dc] Power Management version 2
Capabilities: [e4] PCI-X non-bridge device.
Capabilities: [f0] Message Signalled
Interrupts: 64bit+ Queue=0/0 Enable-

==========================================================

Further, I reverted to 2.4.20-8 , and still no
improvement ! The target side has 2.4.21.


Sai







--- Stephen Hemminger <shemminger@xxxxxxxx> wrote:

> On Thu, 3 Mar 2005 19:14:44 -0800 (PST)
> sai narasimhamurthy <sai_narasi@xxxxxxxxx> wrote:
>
> > Hi,
> > I am using a Dell poweredge 2400 server , P3, 256
> Mb,
> > 82546 EB GBE card, E1000.
> > I tried working with various very high window
> options
> > (w 32M etc) in iPERF ...but to no awail!! The
> > throughput saturates at around 140 Mb/s even for
> > jumbo frames.:(
> > I will revert to my older kernels and see if I get
> > somewhere, ...pl keep the comments comming!
> >
> What is the output of 'lspci -v'? I have seen E1000
> cards that claim
> to be 64-bit PCI but really are only 32 bit.
>





__________________________________
Celebrate Yahoo!'s 10th Birthday!
Yahoo! Netrospective: 100 Moments of the Web
http://birthday.yahoo.com/netrospective/
-
To unsubscribe from this list: send the line "unsubscribe linux-net" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html