[Simh] poor NFS performance

[Erkan Baykan]

Hi,

I have installed SIMH 3.6 on top of RHEL linux 2.6.9-42
and running VAX - OpenVMS 7.3 and TCPIP 5.01 (no patches applied).

Everything seems to be working fine, except for NFS.

I am trying mount directories from VAX to Unix and Windows
(via Hummingbird) boxes.

I am able to mount directories. Initially, Hummingbird was
causing lockd on VAX to hang with 100% CPU usage. I disabled
lockd on VAX. This helped greatly and I was able to access VAX
filesystems from both Unix and PC.

However, the NFS performance is really poor. If a directory
has a quite few files (>20), it takes 2 min to get a listing
of directory, and copying 10K file takes 5 min (worse on PC)
meanwhile VAX becomes unresponsive until the operation completes.

So I was wondering If I could do anything to improve NFS
performance on VAX. I am new to OpenVMS, how can I troubleshoot
this?

Any help will be greatly appreciated.

Thanks

Erkan

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