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 --- This message contains confidential information and is intended only f or the individual named. If you are not the named addressee you s hould not disseminate, distribute or copy this e-mail. Please notify t he sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. E-mail transmission ca n not be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message, which arise as a result of e-mail transmission. If verification is required please request a hard-copy version.
Sorry guys i failed to mention that under a normal load where only a few people would login at the one time, there was no sign of degraded performance however when everyone tried to login at once thats when these results occurred.. so for now people will login 3 machines at a time which is obviously not acceptable. Kind Regards, Chris Anders Network Engineer Anders Networks Mobile - 0421 580 017 Email - chris@anders.net.au Web - http://www.anders.net.au --- This message contains confidential information and is intended only f or the individual named. If you are not the named addressee you s hould not disseminate, distribute or copy this e-mail. Please notify t he sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. E-mail transmission ca n not be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message, which arise as a result of e-mail transmission. If verification is required please request a hard-copy version. On 04/04/2006, at 10:20 PM, Chris Anders wrote:> 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 > > --- > This message contains confidential information and is intended only > f or the individual named. If you are not the named addressee you s > hould not disseminate, distribute or copy this e-mail. Please > notify t he sender immediately by e-mail if you have received this > e-mail by mistake and delete this e-mail from your system. E-mail > transmission ca n not be guaranteed to be secure or error-free as > information could be intercepted, corrupted, lost, destroyed, > arrive late or incomplete, or contain viruses. The sender therefore > does not accept liability for any errors or omissions in the > contents of this message, which arise as a result of e-mail > transmission. If verification is required please request a hard- > copy version. > > > -- > To unsubscribe from this list go to the following URL and read the > instructions: https://lists.samba.org/mailman/listinfo/samba
I had a similar problem to this, but as an add bonus my client stations will also drop connection. We found the problem to be hardware related and not Software. We test the software and found it to perform just fine in normal conditions, so we started to test hardware, hardware being switch, network cards etc... We started with network cards. It preformed the same then we started to replace our networked switch with smaller 4 port switch just to test the performance and AHAA that was the problem. The switch was failing. Of course it was an unmanaged switch so we just replaced. Hope this helps Mark -----Original Message----- From: samba-bounces+mes4294=lausd.k12.ca.us@lists.samba.org [mailto:samba-bounces+mes4294=lausd.k12.ca.us@lists.samba.org] On Behalf Of Chris Anders Sent: Tuesday, April 04, 2006 6:11 AM To: samba@lists.samba.org Subject: Re: [Samba] degraded performance under domain login load Sorry guys i failed to mention that under a normal load where only a few people would login at the one time, there was no sign of degraded performance however when everyone tried to login at once thats when these results occurred.. so for now people will login 3 machines at a time which is obviously not acceptable. Kind Regards, Chris Anders Network Engineer Anders Networks Mobile - 0421 580 017 Email - chris@anders.net.au Web - http://www.anders.net.au --- This message contains confidential information and is intended only f or the individual named. If you are not the named addressee you s hould not disseminate, distribute or copy this e-mail. Please notify t he sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. E-mail transmission ca n not be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message, which arise as a result of e-mail transmission. If verification is required please request a hard-copy version. On 04/04/2006, at 10:20 PM, Chris Anders wrote:> 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 > > --- > This message contains confidential information and is intended only > f or the individual named. If you are not the named addressee you s > hould not disseminate, distribute or copy this e-mail. Please > notify t he sender immediately by e-mail if you have received this > e-mail by mistake and delete this e-mail from your system. E-mail > transmission ca n not be guaranteed to be secure or error-free as > information could be intercepted, corrupted, lost, destroyed, > arrive late or incomplete, or contain viruses. The sender therefore > does not accept liability for any errors or omissions in the > contents of this message, which arise as a result of e-mail > transmission. If verification is required please request a hard- > copy version. > > > -- > To unsubscribe from this list go to the following URL and read the > instructions: https://lists.samba.org/mailman/listinfo/samba-- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
On Tuesday 04 April 2006 08:50, Chris Anders wrote:> Any ideas ?Wondering if there's some difference in certain default parameter settings between the two versions; parameters whose values are not being set in smb.conf and therefore the defaults are in place. Try looking at a diff of the output of "testparm -sv" between the two versions. Chris