[PATCH] TDB traverse lock changes for massive AD DC perf improvement

[Ralph Böhme]

On Fri, Apr 07, 2017 at 08:18:14AM +0200, Volker Lendecke via samba-technical wrote:
> On Fri, Apr 07, 2017 at 05:28:02PM +1200, Douglas Bagnall via samba-technical wrote:
> > I had a go at it. Attached.
> > 
> > cheers,
> > 
> > Douglas
> 
> Thanks, looks interesting! Attached find a version with a bit of
> logging beyond strace. Unsurprisingly works fine on debian jessie. Now
> lets find someone with a Solaris box :-)

Is this the expected output?

---8<---
slow at login [login]:~ > ssh unstable10x 
Last login: Fri Apr  7 08:22:49 2017 from login.bo.opencs
Sun Microsystems Inc.   SunOS 5.10      Generic January 2005
slow at unstable10x [global]:~ > gcc -o fcntl_deadlock fcntl_deadlock.c 
slow at unstable10x [global]:~ > ./fcntl_deadlock 
usage: ./fcntl_deadlock <filename>
slow at unstable10x [global]:~ > ./fcntl_deadlock fcntl_deadlock
process 1 lock ofs=0 len=2: Resource temporarily unavailable
slow at unstable10x [global]:~ > 
---8<---

That's on Solaris 10 x86.

Cheerio!
-slow