Hi guys,

Not sure how to diagnose this problem however i have recently
upgraded one of my schools sites from gentoo to freebsd which moved
us from samba 3.0.14 to 3.0.21b and the first thing I noticed was
when the students came to login if they all logged in at once the
performance of login was crippled to a near standstill!

As a test i swapped in the gentoo box and forced the upgrade to samba
3.0.21b (incase it was distro related) and to my surprise the same
problem occurred, a class will come into the computer lab all try to
login, kixtart will start do its login procedures and everything
would login at a snail pace, to the point kixtart will lockup and
generate errors!!!

As the next test, i swaped the fresh installed freebsd system back in
removed the latest samba from ports and manually installed samba
3.0.14 and the problem was resolved. This leads me to believe that
this is not distro specific at all, however a serious problem in high
load systems of login.

Is there is a way to tune the latest versions of samba to combat this
problem as i even noticed loading some apps off the network, if
everyone is trying to access the same app at the same time that it
too will loads at a snail pace...

I have monitored server load and smbd usage and nothing looks out of
the ordinary, i have watched logs with nothing standing out as a
problem...

This computer lab only consists of 25 computers and the server is a
dual xeon with a 3ware card running raid5 using raptors, so it has
plenty of IO!
The workstation OS is win2k w/sp4

Any ideas ?



Kind Regards,


Chris Anders
Network Engineer

Anders Networks
Mobile - 0421 580 017
Email - chris@anders.net.au
Web - http://www.anders.net.au

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