samba performance difference between old and the latest ?

[Andrew Bartlett]

Thanks so much for getting back to us.  Make sure to catch up with the
Samba Team at SDC to pin this down further. 

Finally, to ensure I understand your reply correctly:  Is it correct
that 4.8.12 is 'normal', but 4.9.13 is 'slow'?

Thanks!

Andrew Bartlett

On Wed, 2019-09-18 at 09:33 +0900, Namjae Jeon via samba-technical
wrote:
> 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
> > 
> > 
> 
> 
> 
-- 
Andrew Bartlett
https://samba.org/~abartlet/
Authentication Developer, Samba Team         https://samba.org
Samba Development and Support, Catalyst IT   
https://catalyst.net.nz/services/samba