100Mbit network performance - again

Andrew P. infofarmer at gmail.com
Tue Jul 26 23:40:01 GMT 2005


You might be right in a sense, but like I said: Windows-to-Windows
file transfers can easily be sustained at 11-12Mbytes/s. That's up to
over 90% of 100Mbit bandwidth. In fact, if you review the theoretical
part of Ethernet and TCP/IP, you'd find that it's very possible.

On 7/27/05, Sean Hafeez <sean.hafeez at gmail.com> wrote:
> Let me fix my typo here.....
> 
> I get 60+Mbits out of 100Mbits on a 10/100 network.
> 
> The Max SUSTAINED thru-put you will ever see will be around 70Mbits.
> There is an overhead that means that you will only see .7 of the
> theoretical.
> 
> -Sean
> 
> On Jul 26, 2005, at 4:13 PM, Andrew P. wrote:
> 
> > Erm, well 60+Mbytes is no wonder in a Gigabit environment (and it is
> > too much of a wonder in a FastEthernet one), but I'm interested in
> > getting 100Mbit hardware to work at full speed.
> >
> > Thanks for your 2 cents anyway,
> > Andrew P.
> >
> > On 7/27/05, Sean Hafeez <sean.hafeez at gmail.com> wrote:
> >
> >> I get 60+Mbytes between my FreeBSD 5.4 and Mac via NFS. I get
> >> 40-60Mbytes between my FreeBSD 5.4 and Windows 2K box via Samba. Good
> >> NICs help. Intel 10/100 Pro.
> >>
> >> Google for Samba tuning also.
> >>
> >> -Sean
> >>
> >>
> >>
> >> On Jul 26, 2005, at 4:00 PM, Andrew P. wrote:
> >>
> >>
> >>> Hello all!
> >>>
> >>> I remember being able to reach 11-12Mbytes/s between two Win95
> >>> workstations with NE2000 $10 NIC's installed, connected via BNC
> >>> cable.
> >>> I am now able to reach 11-12Mbytes/s between all kinds of Windows
> >>> 2000/XP machines with all kinds of cheapest 100Mbit ethernet
> >>> hardware.
> >>>
> >>> But I have never ever exceeded 8-9Mbytes/s between a Windows machine
> >>> and a FreeBSD box - _never_. Be it Samba, different ftp/http
> >>> servers,
> >>> different FreeBSD versions (4.x/5.x), with ipfw enabled or disabled,
> >>> etc., - the speed always hovers around 7-8Mb/s. I know it's not
> >>> critical, I know I should've upgraded to Gigabit hardware long ago,
> >>> but is there something wrong?
> >>>
> >>> I tried different linux distros, but they all seem to be even
> >>> slower. Wazzup?..
> >>>
> >>> Thanks,
> >>> Andrew P.
> >>> _______________________________________________
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> >>>
> >>>
> >>
> >>
> >>
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> 
>


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