We have the cluster running without problem (RHEL5.3, gfs2). The
improvements over the last 6 months are noticeable, and appreciated.
The problem:
Local file access (cluster member) is 160/135 r/w.
rsh access across the network is 130/115.
nfs access across the network is 45/27.
Our test is
dd if=/dev/zero of=/nfs/mount/test_file bs=1M count=10000
The remote system is also 5.3.
We've tinkered with a whole lot of settings in nfs server/client, gfs2
mount and tune parameters, and the network itself. We've also played
with dd flags. Yet we can't cross the 27 Mb/s write threshold. (But
we're willing to try again.)
Any advice?
djm
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