Samba 3.0.22 - slow performance - Really urgent help
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From: Volker Lendecke on 1 Apr 2010 08:00 On Thu, Apr 01, 2010 at 01:49:56PM +0200, christoph.beyer(a)desy.de wrote: > Hi, > > I bet they are but I see thousands of them per second for every client > that is 'just connected' and not doing anything, (on solaris) it slows > down a t5120 machine with five connections to become unusable... I see > the problem with: > > samba-3.0.20 > samba-3.2.14 > samba-3.3.10 > samba-3.4.1 samba-3.4.5 > > stopped trying more versions than as there was no single response on this > list and changed my service to a linux box where all of these versions > run just fine :) That might be a symptom of a corrupt tdb file somewhere. lsof might show you which of the tdbs is being beaten. Volker -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
From: christoph.beyer on 1 Apr 2010 08:00 Hi, I bet they are but I see thousands of them per second for every client that is 'just connected' and not doing anything, (on solaris) it slows down a t5120 machine with five connections to become unusable... I see the problem with: samba-3.0.20 samba-3.2.14 samba-3.3.10 samba-3.4.1 samba-3.4.5 stopped trying more versions than as there was no single response on this list and changed my service to a linux box where all of these versions run just fine :) cheers christoph On Thu, 1 Apr 2010, Volker Lendecke wrote: > On Thu, Apr 01, 2010 at 01:32:02PM +0200, Christoph Beyer wrote: >> if you do 'truss -f -p <smbd-PID>' do you see a lot of: >> >> 19702: fcntl(17, F_SETLKW64, 0xFFBFE640) = 0 >> >> ? >> >> If yes this is a problem that is present in most of the recent samba >> versions (tried 5 or 6 versions off the different branches) it's a >> solaris related bug but that's all I can say. It might be fixed in 3.5.1 >> ... > > Those many fcntl calls are just normal Samba operation. They > should be *very* fast. There might be a problem with the > messages.tdb, notify.tdb and notify_onelevel.tdb in current > Samba version, where there is one fcntl read lock being held > per smbd on each of these databases. This might be a > performance problem if you have thousands of connected > clients. But normally, fcntl calls should be very fast. > > Volker > best regards ~christoph -- /* Christoph Beyer | Office: Building 2b / 23 *\ * DESY | Phone: 040-8998-2317 * * - IT - | Fax: 040-8998-4060 * \* 22603 Hamburg | http://www.desy.de */ -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
From: christoph.beyer on 1 Apr 2010 08:10 hmm, the symptoms went away using the older version of 3.0.x with the same tdbs, anyway thanks for the hint and maybe Alan has a complete different problem... cheers christoph On Thu, 1 Apr 2010, Volker Lendecke wrote: > On Thu, Apr 01, 2010 at 01:49:56PM +0200, christoph.beyer(a)desy.de wrote: >> Hi, >> >> I bet they are but I see thousands of them per second for every client >> that is 'just connected' and not doing anything, (on solaris) it slows >> down a t5120 machine with five connections to become unusable... I see >> the problem with: >> >> samba-3.0.20 >> samba-3.2.14 >> samba-3.3.10 >> samba-3.4.1 samba-3.4.5 >> >> stopped trying more versions than as there was no single response on this >> list and changed my service to a linux box where all of these versions >> run just fine :) > > That might be a symptom of a corrupt tdb file somewhere. > lsof might show you which of the tdbs is being beaten. > > Volker > best regards ~christoph -- /* Christoph Beyer | Office: Building 2b / 23 *\ * DESY | Phone: 040-8998-2317 * * - IT - | Fax: 040-8998-4060 * \* 22603 Hamburg | http://www.desy.de */ -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
From: Volker Lendecke on 1 Apr 2010 08:30
On Thu, Apr 01, 2010 at 02:00:51PM +0200, christoph.beyer(a)desy.de wrote: > the symptoms went away using the older version of 3.0.x with the same > tdbs, anyway thanks for the hint and maybe Alan has a complete different > problem... This needs fixing. Using samba-ancient is no solution :-) Can you send a debug level 10 smbd log and the truss output of a smbd? Volker -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba |