[wellylug] Nforce4 motherboard and underperforming network

[Jamie Dobbs]

Bruce Hoult wrote:
> On 5/5/07, Jamie Dobbs <jamie.dobbs at ihug.co.nz> wrote:
>> I have noticed that my Gigabit ethernet runs about half as fast under
>> Ubuntu  (approx. 1.5MB/s) using the forcedeth driver as it does in
>> Windows using the Nvidia driver (approx 3.1MB/s). These figures are at a
>> known network state copying the same files to and from the same 
>> location.
>> Is there anything I can do to tweak the forcedeth driver or am I best to
>> just give up and buy a better supported Gigabit card for using under
>> Ubuntu?
>
> That seems ridiculously slow in both cases.  Those are the sort of
> speed I'm used to getting from 802.11g wifi (2.5 - 3 MB/sec).
> 100baseT should be giving 10 - 11 MB/sec and gigibit should give you
> your raw hard disk speed (usually 30 - 40 MB/sec) or faster if it's
> program-to-program communication.
>
>
It turns out that the monitoring I was using appears to have been 
scaling it's output.
The real issue here now appears to be that if I use FTP I get something 
in the 30MB-40MB+/s mark but if using either Samba or NFS I get around 
half this speed.
I've tried tuning the block size for NFS but this has made little to no 
difference, I'd like to get the performance on par with that of FTP but 
if I cannot I will just use FTP I guess.