Ten to 1 expansion of SMB requests to fcntl system calls?

[Volker Lendecke]

On Wed, May 22, 2013 at 09:52:14PM -0700, Richard Sharpe wrote:
> On Wed, May 22, 2013 at 9:50 PM, Volker Lendecke
> <Volker.Lendecke at sernet.de> wrote:
> > On Wed, May 22, 2013 at 09:04:50PM -0700, Richard Sharpe wrote:
> >> Hi folks,
> >>
> >> I have been running some dbench runs using the standard client.txt
> >> file and using dtrace to measure system calls made by the smbd.
> >>
> >> For ~97,000 requests (SMB1 requests) I see 1,288,252 fcntl syscalls.
> >> This seems excessive. Where might those be coming from?
> >>
> >> This is a FreeBSD 8.0 system.
> >
> > What Samba version?
> 
> 3.6.12 plus some patches from 3.6.13 and your patch to remove stat
> from the non-sendfile read path.

Can you find out if it's the serverid.tdb that is accessed
most? If so, then this might go away with Samba 4.0.

Volker

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