[Samba] ridiculous slow gigabit transfer, faster with VNC

Mark Baily mark16829 at gmail.com
Sat Jul 21 00:11:48 GMT 2007

I've now put a D-LINK DGE-530T in both the win32 desktop and the
opensolaris desktop. Both large pings and samba are working.

With the DGE-530T in the win32 and the realtek in the opensolaris,
large  pings worked but samba was still 63mins estimated to transfer a
1G file. With the inbuilt Marvel Yukon in the win32 and the DGE-530T
in opensolaris large pings did not work but samba did work (25 sec).

With the DGE-530T in both, both large pings and samba work fine.

My lesson in this is to avoid any NIC built-in to the motherboard and
use a seperate high-quality NIC card.

On 7/21/07, Mark Baily <mark16829 at gmail.com> wrote:
> Problem partially solved..
> Using a D-LINK DGE-530T with the syskonnect skge 64-bit driver,
> instead of using the inbuilt realtek NIC in the opensolaris box and
> now samba works great, 25 sec to copy a 1GB file.
> I've heard some other posts where realtek network chips were causing
> probs, think I'll stay away from them in the future.
> Re ping exchanges, this does indeed show up the differences. Pinging
> from the opensolaris to the linux laptop works perfectly with ping
> data sizes up to the IPV4 limit (65507). This works with both the
> realtek NIC and the dlink NIC.
> Pinging from the opensolaris to the win32 desktop the maximum ping
> size I can get to work is 1472. As greater size results in 100% packet
> loss. This is also with both NIC's.
> Anyway I at least have the samba functionality I need. Would be nice
> to sort out why the unix machines are fine with each other but
> unix<->win32 seems to have much more problems at a basic networking
> level. It could indeed be bad drivers etc.
> Mark
> On 7/20/07, Steve Platt <steve.platt at mrc-bsu.cam.ac.uk> wrote:
> >
> > Mark,
> >
> >
> > It might be worth checking that you can do large ping exchanges between the
> > affected systems ... eg in solaris try
> >
> >  /usr/sbin/ping -s clientpcname 64000
> >
> > This sends several ethernet frames almost "back to back" and can show up
> > duplex problems as well as driver/buffering problems (common in PCs).
> >
> > Steve
> >
> >

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