Dell POWEREDGE R720XD - Manual (Page 38)

Improving NFS Performance on HPC Clusters with Dell Fluid Cache for DAS
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Metadata file and directory creation test:
# mpirun -np 32 -rr --hostfile ./hosts /nfs/share/mdtest -d
/nfs/share/filedir -i 6 -b 320 -z 1 -L -I 3000 -y -u -t -C
Metadata file and directory stat test:
# mpirun -np 32 -rr --hostfile ./hosts /nfs/share/mdtest -d
/nfs/share/filedir -i 6 -b 320 -z 1 -L -I 3000 -y -u -t -R -T
Metadata file and directory removal test:
# mpirun -np 32 -rr --hostfile ./hosts /nfs/share/mdtest -d
/nfs/share/filedir -i 6 -b 320 -z 1 -L -I 3000 -y -u -t -r