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

Elrond elrond at samba-tng.org
Fri Feb 23 18:10:35 GMT 2001


On Fri, Feb 23, 2001 at 09:22:29AM +1100, Andrew Bartlett wrote:
> I have around 300 users, most of who are in a 'students' primary group. 

300 users in smbpasswd...

TNGs use of smbpasswd is quite "suboptimal"...
We actualy want and need to switch to a new format, which
supports our view of things much better.

You might trying to switch to ldap as a backend, which
should be somewhat faster...


    Elrond


> 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
> 




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