[Cialug] OT: Gigabit speeds (was Gigabit NICs)

[Aaron Porter]

On 11/14/06, Nathan C. Smith <smith at ipmvs.com> wrote:
> I wonder if you could ever really approach a gigabit from any machine.
> Anybody have any concrete data?

I snagged a few hosts from the queue, but couldn't shutdown the
cluster run, so these numbers are from a live network. I used the
netpipe-tcp package from Debian Etch with default options.

Intel(R) XEON(TM) CPU 2.20GHz <-> Intel(R) XEON(TM) CPU 2.20GHz
123: 8388611 bytes      3 times -->    894.15 Mbps in   71576.48 usec

lspci -v:
0000:03:07.1 Ethernet controller: Intel Corporation 82546EB Gigabit
Ethernet Controller (Copper) (rev 01)
        Subsystem: Intel Corporation: Unknown device 3416
        Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 193
        Memory at feae0000 (64-bit, non-prefetchable) [size=128K]
        I/O ports at 2000 [size=64]
        Capabilities: [dc] Power Management version 2
        Capabilities: [e4]      Capabilities: [f0] Message Signalled
Interrupts: 64bit+ Queue=0/0 Enable-

AMD Opteron(tm) Processor 246 <-> AMD Opteron(tm) Processor 246
123: 8388611 bytes      3 times -->    896.79 Mbps in   71365.99 usec

lspci -v:
0000:01:02.1 Ethernet controller: Broadcom Corporation NetXtreme
BCM5704 Gigabit Ethernet (rev 03)
        Subsystem: Broadcom Corporation NetXtreme BCM5704 Gigabit Ethernet
        Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 185
        Memory at fc8f0000 (64-bit, non-prefetchable) [size=64K]
        Memory at fc8e0000 (64-bit, non-prefetchable) [size=64K]
        Capabilities: [40]      Capabilities: [48] Power Management version 2
        Capabilities: [50] Vital Product Data
        Capabilities: [58] Message Signalled Interrupts: 64bit+
Queue=0/3 Enable-