On 6/12/2014 2:54 PM, Mark Lehrer wrote:
Awesome work on nfs-rdma in the later kernels! I had been having
panic problems for awhile and now things appear to be quite reliable.
Now that things are more reliable, I would like to help work on speed
issues. On this same hardware with SMB Direct and the standard
storage review 8k 70/30 test, I get combined read & write performance
of around 2.5GB/sec. With nfs-rdma it is pushing about 850MB/sec.
This is simply an unacceptable difference.
I'm using the standard settings -- connected mode, 65520 byte MTU,
nfs-server-side "async", lots of nfsd's, and nfsver=3 with large
buffers. Does anyone have any tuning suggestions and/or places to
start looking for bottlenecks?
What RDMA device?
Steve.
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