[Samba] Vista client / Linux server - high browsing latency

Rune Tønnesen rune at tonnesen.org
Sat Jun 9 12:37:51 GMT 2007

Jay L. T. Cornwall skrev:
> Hash: SHA1
> Hi,
> I have the following system set up:
> Server: Ubuntu 7.04, Samba 3.0.24,
>   http://www.esuna.co.uk/~jay/misc/smb.conf
> Client: Vista Ultimate 64-bit, NetBIOS over TCP/IP disabled, LMHOSTS
> lookup disabled. Share mapped to drive Z:.
> Up until a few days ago this was working fine. Read/write transfer rates
> of over 20MB/s onto a RAID-1 array, speedy browsing. But yesterday I
> noticed a drop in browsing latency; there's now a short but noticeable
> delay before directory listings appear. Cygwin's ls (which I assume was
> inefficient to begin with, but quite usable) takes 9 seconds to list a
> small directory.
> Curiously, *read/write throughput hasn't changed* - it's still >20MB/s.
> Latency also seems normal if I reboot into an XP Professional
> installation, or access the share from my Vista Business 32-bit laptop
> on the same network. The problem briefly seemed to fix itself yesterday
> after I tweaked the configuration file a bit, but returned to poor
> performance later in the day; possibly after a reboot but I don't recall.
> I've upped the log level and can't see any obvious errors in log.smbd or
> in log.(host). Observing traffic with tcpdump turns up nothing obvious -
> the exchange goes on for longer but the difference in per-packet latency
> isn't visible (Samba sure sends a *lot* of packets to list a directory).
> Any ideas what I could do to trace this problem?
> Thanks,
> - --
> Jay L. T. Cornwall, http://www.esuna.co.uk/~jay/
> PhD Student
> Imperial College London
> Version: GnuPG v1.4.7 (MingW32)
> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
> iD8DBQFGao07oHnC75cy2zgRAkyzAJ98b197bLi6pVjPxrIo1zi0wo0z3QCdHRjj
> u76kid/jRRM8Oj4Uoiy86IY=
> =xDVi
Which one of your computer is master browse?

Rune Tønnesen
Bedste Hilsner/Best Regards

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