[mythtvnz] Realtek NICs

[criggie at criggie.dyndns.org]

Steve Hodge wrote, On 05/13/2010 04:28 PM:
> On Thu, May 13, 2010 at 3:41 PM, Graeme Woollett 
> <g.woollett at irl.cri.nz <mailto:g.woollett at irl.cri.nz>> wrote:
>
>     See http://ubuntuforums.org/showthread.php?t=1022411
>
>
> That thread seems to be saying that the problem is the driver not the 
> chip. It also sounds like it's specific to using the 8169 driver with 
> embedded 8111 or 8168 chips.
> As I said I haven't had any problems with my 8169 PCI card. Thought I 
> can't say I've managed to hit full gigabit speeds on any of my gear. 
> File sharing is bottlenecked by CPU and/or disk well below the gigabit 
> level. Benchmarking with netio I can get about 58MB/s (TCP), still 
> limited by the CPU in the fileserver. Between my desktop and laptop I 
> can get up to about 75MB/s and it doesn't seem to be pegging the CPUs 
> (I guess it might be pegging one of the cores in the laptop). It seem 
> likely that the cheap switches I'm using are a bottleneck.

That's dreadful.... that's not even "okay" for 100 Mbit, let alone gig.

desktop
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. 
RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01)

server
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. 
RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)


thionite:~# iperf -c caffeine
------------------------------------------------------------
Client connecting to caffeine, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[  3] local 10.28.2.9 port 48654 connected with 10.28.1.2 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.0 sec  1.10 GBytes    942 Mbits/sec