On Mon, May 13, 2013 at 12:52:56PM +0200, Danny wrote: > Hi all, > > At the moment we are running Debian squeeze with stock samba 3.5.6. > and are testing some new samba installations from ubuntu 12.04, > centos 6.4 and debian wheezy. All running in a VM on a XenServer. > The samba servers are member of a 2008R2 domain, using smb1 protocol > all are running fine and we get a constant 90MB/s (big file > transfer) on our 1GB network. > We would like to enable smb2 protocol for performance reasons, but > when we do enable SMB2 (max protocol = SMB2) file transfer speed > drops to 50-60MB/s (one big file) instead of the 80-90MB/s we used > to get before. We noticed when this happens the cpu is at its max > instead of 60-70% when using smb1. > iostat doesn't show any serious load and our raid 10 setup isn't > experience any difficulties. > Using the packages (3.6.13) from EnterpriseSamba we get simular results. > > Is it known enabling smb2 requires a faster cpu and our cpu is > simply not powerfull enough or is there another problem which we > should look into? (Or should we just stick to smb1, because smb2 > isn't worth the trouble?)
You should definitely use SMB2. The higher CPU is suprising. You should be able to max out a 1GB network with SMB2 easily. Does Debian support the perf utility to find out what the process does? Volker -- SerNet GmbH, Bahnhofsallee 1b, 37081 Göttingen phone: +49-551-370000-0, fax: +49-551-370000-9 AG Göttingen, HRB 2816, GF: Dr. Johannes Loxen http://www.sernet.de, mailto:kont...@sernet.de -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
