samba performance difference between old and the latest ?

[Namjae Jeon]

Hi Andrew,

I'm sorry I'm late. I forgot because there are many issues this week. 
I just checked that the performance is degraded from samba 4.8.12. 
The version I checked is as follows.

4.7.12
4.8.12 <--- performance degration
4.9.13
4.10.6
4.11.0

I can look at samba changes more, but I am sorry that I couldn't help
you much because of the event(SDC 2019) next week:)

Thanks!

> -----Original Message-----
> From: Andrew Bartlett [mailto:abartlet at samba.org]
> Sent: Wednesday, September 18, 2019 4:33 AM
> To: Namjae Jeon
> Cc: Namjae Jeon; sergey.senozhatsky at gmail.com; samba-
> technical at lists.samba.org
> Subject: Re: samba performance difference between old and the latest ?
> 
> On Sat, 2019-09-07 at 14:58 +0900, Namjae Jeon via samba-technical
> wrote:
> > 2019-09-07 12:20 GMT+09:00, Andrew Bartlett via samba-technical
> > <samba-technical at lists.samba.org>:
> > > On Fri, 2019-09-06 at 11:01 +0900, Namjae Jeon via samba-technical
> > > wrote:
> > > > Hello,
> > > >
> > > > I found something strange during measuring performance with samba
> > > > these days.
> > > > I checked the performance of samba 4.7.6 and 4.10.6.
> > >
> > >
> > > > samba 4.7.6 : 11.6MB/s
> > > > samba 4.10.6 : 9.5MB/s
> > > >
> > >
> > > Jumping back to the top of this thread to focus on what you could
> > > help
> > > us with.  If you built Samba for both of these tests, then perhaps
> > > you
> > > could do a git bisect between those two versions to work out where
> > > this
> > > degraded?
> >
> > Yes, I agree to narrow it down.
> > >
> > > Of course, this assumes it was a single commit, but who knows, it
> > > just
> > > might be.
> > >
> > > Either way, if you were able to additionally test 4.7.latest,
> > > 4.8.latest, 4.9.latest, 4.11.0rc3 and master (so as to add to the
> > > dataset) it would be a massive help.
> >
> > Hm, okay, I will make time.
> 
> G'Day Namjae,
> 
> I just wondered if you had any more numbers to share with us?
> 
> I know I asked for a lot of work, but we would really appreciate any
> insights you have on this.
> 
> Thanks!
> 
> Andrew Bartlett
> --
> Andrew Bartlett                       https://samba.org/~abartlet/
> Authentication Developer, Samba Team  https://samba.org
> Samba Developer, Catalyst IT
> https://catalyst.net.nz/services/samba
> 
>