To Mike:

Thanks for the link, hadn't seen that.

Also, the nfs server is a dedicated SAN head end, so I have little to no 
control of its nfs parms.

To 

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Skylar Thompson
Sent: Tuesday, February 02, 2016 4:43 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] getting performance from nfs storage over 10 gb link

Hi Gary,

To Skylar:

I will check into those options.

To all:

I can say that tsm performance was better when the same storage was mounted 
with the same mount options using a 1 gb adapter.
Strange, I know, but that's the riddle I'm dealing with.

Thanks for everything so far. Will keep you posted on results.

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 (skylar2 AT u.washington DOT edu)
-- Genome Sciences Department, System Administrator
-- Foege Building S046, (206)-685-7354
-- University of Washington School of Medicine