9 NFS performance tuning
NOTE: This section applies only to the image version of Cluster Test.
Cluster Test Image allows some kernel parameter tuning that improves NFS performance and slow node booting when all the compute nodes are booted simultaneously. These parameters are optimal values derived after evaluation with supported HP hardware.
The RPCNFSDCOUNT value is increased to 128 from the default value of 8 in /etc/sysconfig/
nfs.
These are the TCP tuning parameters implemented in /etc/sysctl.conf file.
net.core.rmem_default 524288 net.core.rmem_max 524288 net.ipv4.tcp_rmem "8192 262144 524288" net.ipv4.tcp_wmem "8192 262144 524288"
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