Hi Gary, We don't use NFS for our TSM servers, but we have been struggling with NFS over 10GbE in other areas. While not a universal solution, we've gotten significant performance improvements by disabling the following NIC offload options:
gro lro rxvlan txvlan rxhash For instance, you can disable gro with ethtool --offload eth0 gro off (assuming eth0 is your NIC) There's a bunch more we haven't had a chance to play with, but hopefully that's a starting point. On Tue, Feb 02, 2016 at 05:54:46PM +0000, Lee, Gary wrote: > Tsm server 6.4.3, > RHEL 6.7 > 4 Dual-Core AMD Opteron(tm) Processor 8220 SE CPUs > 128 gB memory > > I recently installed an intel 10 gB Ethernet card. > Iperf3 test shown below gives around 7 gb throughput. > However, when running multiple migration and reclamation processes, and > watching network traffic through an independent tool, I cannot get over the > 900 mb/s threshold. > > The tsm storage pools are on a file system mounted as follows: > > Nxback-Pool02.servers.bsu.edu:/volumes/Pool02/TSMBackup/tsm02 > /tsminst1/storage nfs > rw,relatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys > 0 0 > > I am running out of options. > > I don't expect to see the full throughput, as disk speeds will have a good > deal of impact. > > Any ideas would be helpful. -- -- Skylar Thompson (skyl...@u.washington.edu) -- Genome Sciences Department, System Administrator -- Foege Building S046, (206)-685-7354 -- University of Washington School of Medicine
