[PATCH] Use the same process and krb5 ccache when invoking samba-tool in drs tests

[Andrew Bartlett]

On Wed, 2017-07-26 at 07:58 +0200, Andreas Schneider wrote:
> On Tuesday, 25 July 2017 22:07:24 CEST Andrew Bartlett via samba-technical 
> wrote:
> > On Sat, 2017-07-22 at 09:00 +1200, Andrew Bartlett via samba-technical
> > 
> > wrote:
> > > On Sat, 2017-07-22 at 08:19 +1200, Andrew Bartlett via samba-technical
> > > 
> > > wrote:
> > > > This patch removes a number of calls to fork() inside python, and
> > > > instead of passing -Uusername%password on the internal command line, we
> > > > pass around the name of the krb5 credentials cache we already have.
> > > > 
> > > > I've not been able to quantify the speed benefits - there seems to be
> > > > more noise than signal in the timing here, hence my other patch
> > > > reducing idle time, but when we had these tests under perf/FlameGraph
> > > > the string2key routines really dominated the time what was spent on the
> > > > CPU.
> > > 
> > > Actually, if I use my tevent_immediate patch as the baseline, it saves
> > > about 80 seconds per repl_move test on my laptop.
> > > 
> > > Aside from making the timing more reliable, it is however independent
> > > of that patch.
> > > 
> > > > Earlier in the thread, Jeremy looked over the C parts, but if someone
> > > > could look over the rest that would be great!
> > > > 
> > > > Please review!
> > 
> > Can I please get a review on this patch series?  As above, it makes a
> > measurable reduction to the time taken for make test, which we would
> > all appreciate.
> 
> I was busy with metze his async spnego patchset, that one is the next on my 
> list.

Thanks for all your work on that.  I got some very helpful feedback
(this patch set has a botched patch split up) and then Douglas' review
on this today, and so it is in autobuild.

Thanks!

Andrew Bartlett

-- 
Andrew Bartlett                       http://samba.org/~abartlet/
Authentication Developer, Samba Team  http://samba.org
Samba Developer, Catalyst IT          http://catalyst.net.nz/services/samba