FW: Speed comp. TNG & 2.2.alpha (fwd)

[Andrew Bartlett]

I have around 300 users, most of who are in a 'students' primary group. 
There are a few groups (54 including system groups), all of which don't
have very many (non-primary) members.

Hope this helps,
Andrew Bartlett

Luke Kenneth Casson Leighton wrote:
> 
> andrew,
> 
> appreciate your rewsponse.
> 
> do you, by chance, have a large number of unix groups and large numbers of
> users in those groups?
> 
> luke
> 
> On Fri, 23 Feb 2001, Andrew Bartlett wrote:
> 
> > For some reason I implemented TNG in a production environment (I needed
> > user-level security for Win9X shares), and noticed an immediate slowdown
> > for logons and I had reports that logons where timing out, with users
> > unable to login before the timeout - even pressing retry for 45min!
> >
> > These logins are from NT4, with a logon applet that sends 2 incorrect
> > passwords (local user, new user with no password) before the final
> > password from the user.  When the system is not in use a logon (with the
> > applet) took 30secs with TNG compared with immediate on 2.2
> >
> > Other logons are from Win9X, as standard domain logons.
> >
> > I ended up having to move back to 2.2, but I should note the mitigating
> > factors:
> > I enabled and used utmp, syslog and quotas (all of which I am sure are
> > entirely untested).
> >
> > My system in RedHat 6.2 on a p166, on a separate subnet from the
> > clients, with a firewall in between.
> >
> > Just another data-point,
> > Andrew Bartlett
> >
> > Luke Kenneth Casson Leighton wrote:
> > >
> > > raoul,
> > >
> > > i am fascinated.
> > >
> > > did you set any debug log levels?  remember: if you set log level to 100
> > > on TNG, expect a performance hit of about a factor of ten or 20!
> > >
> > > did you compile TNG with dynamic libraries or static?  (it's a ./configure
> > > option, the default is dynamic.  it affects the binary size - vastly
> > > smaller: smbd is... urr... 417k in TNG latest cvs instead of.... urr...
> > > 2meg?  - but has an overhead of 15% roughly on the actual function calls
> > > etc. and also on the libaries all being PIC - position independent code)
> > >
> > > another recommended test:
> > >
> > > how long does a domain logon take?
> > >
> > > important things to do:
> > >
> > > reboot the client in between tests.  wait for the dialog box to come up.
> > > wait for the client disk to stop spinning.  wait another 20 seconds.
> > > _then_ log in, starting the timer from then.
> > >
> > > include downloading your user-profile, if you have one.  do not modify the
> > > desktop as you log out.
> > >
> > > run this twice (each machine) to make sure.
> > >
> > > many thanks raoul,
> > >
> > > luke
> > >
> > > -----Original Message-----
> > > From: tng-users-bounce at lists.dcerpc.org
> > > [mailto:tng-users-bounce at lists.dcerpc.org]On Behalf Of Raoul Schroeder
> > > Sent: 21 February 2001 15:54
> > > To: users tng
> > > Subject: Speed comp. TNG & 2.2.alpha
> > >
> > > Just in case anyone was interested, I compared the speed of TNG and
> > > 2.2.alpha...
> > > This was the setup:
> > > FreeBSD Release 4.1
> > > TNG 2.6 good  vs. 2.2.alpha from CVS
> > > Pentium III 750 with 128MB and 2 Ultra-2LD SCSI Harddisks (18 GB each)
> > > Three shares are set browseable.
> > > Domain logons are enabled. (Win2K and WinNT)
> > >
> > > Initial browsing in Windows Explorer (finding drives R:, S:, V:):
> > > TNG: 0.4 - 0.5 s (is slightly difficult to measure, dunno how much is
> > > Windows, how much is TNG related)
> > > 2.2.alpha: around 2 s
> > >
> > > Copying of 100 MB (mixture of small and big files) from the server:
> > > This was unfortunately mainly limited by the fact that I am sitting on a
> > > 10 MBit half duplex network, partially switched.
> > > TNG: 6 minutes
> > > 2.2.alpha: 9 minutes
> >
> > --
> > Andrew Bartlett
> > abartlet at pcug.org.au
> >
> 
>  ----- Luke Kenneth Casson Leighton <lkcl at samba-tng.org> -----
> 
> "i want a world of dreams, run by near-sighted visionaries"
> "good.  that's them sorted out.  now, on _this_ world..."

-- 
Andrew Bartlett
abartlet at pcug.org.au