[nfs-rdma-devel] [ofa-general] Status of NFS-RDMA ? (fwd)

[Talpey, Thomas]

At 08:20 AM 3/3/2008, Pawel Dziekonski wrote:
>both nfs server and client have Mellanox MT25204 HCAs. tests were done
>by connecting them port to port (without switch) with DDR cable.
>reported link was 20Gbps.

What kernel base is your client running also? (uname -a) There are some
known issues with cached write throughput over NFS above 1Gb, that
we may be able to work around but it's kernel-dependent.

>currently I have a Flextronix switch that reports itself as "MT47396
>Infiniscale-III Mellanox Technologies".

Looking at your results from earlier this month, it's not at all clear that the
nfs/rdma run was actually using nfs/rdma. The speeds and cpu loads were
very similar to the ethernet results.

Can we take this offline and look into it more? All on the client, I'll be interested
in the exact mount command you ran, the output of "cat /proc/mounts", the
contents of dmesg/kernel logs after a run, and the output of "nfsstat".

Tom.