[PATCH] Fix bug 9412 - SMB2 server doesn't support recvfile.

Volker Lendecke Volker.Lendecke at SerNet.DE
Mon Mar 31 04:02:28 MDT 2014

Hello, Jones!

On Mon, Mar 31, 2014 at 05:34:14PM +0800, Jones wrote:
> Excuse me to recall this old thread,
> i am trying to find bottleneck with samba-4.0.5 in the linux box,
> the iometer access spec is set to 512bytes sequential write.
> And my samba-4.0.5 is patched with Bug#9412,
> https://bugzilla.samba.org/show_bug.cgi?id=9412

While I can't really comment on this specific issue, let me
point out that Samba master has seen some really significant
performance improvements, in particular for small CPUs.
Just last week I did a comparison of 4.0.something against
master with async I/O, and the user-space CPU had dropped by
roughly half. This was a bit comparing Apples and Oranges,
but the changes were significant. So it might be worth a
look at master, in particular as there will pretty soon be
patches to use tdb mutexes instead of fcntl for tdb locking.

With best regards,

Volker Lendecke

SerNet GmbH, Bahnhofsallee 1b, 37081 Göttingen
phone: +49-551-370000-0, fax: +49-551-370000-9
AG Göttingen, HRB 2816, GF: Dr. Johannes Loxen
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