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There are three settings related to client performance that are presented here as recommendations for EDA.
To view the default settings for each setting run following commands:
# isi_gconfig registry.Services.lwio.Parameters.Drivers.nfs.nlm.QuarantineTimeSec
# isi_gconfig registry.Services.lwio.Parameters.Drivers.nfs.nlm.RpcIdleTimeout
# isi_gconfig registry.Services.lwio.Parameters.Drivers.nfs.SecurityCacheUidGidLruSize
The values recommended are 30, 360, and 4000 respectively for QuarantineTimeSec, RpcIdleTimeout, and SecurityCacheUidGidLruSize settings above.
QuarantineTimeSec controls how long a client is put on a quarantine list if the client requests a deferred lock, and the cluster cannot contact the client’s NLM lock manager. Reduce the value to 30 or even set to 0.
RpcIdleTimeout controls how long before an NFS connection is considered idle. Set the value to 360 seconds.
SecurityCacheUidGidLruSize control users and groups to be cached on memory. Increasing the default value to 4000 to speed up users and groups lookup.
# isi_gconfig registry.Services.lwio.Parameters.Drivers.nfs.nlm.QuarantineTimeSec=30
# isi_gconfig registry.Services.lwio.Parameters.Drivers.nfs.nlm.RpcIdleTimeout=360
# isi_gconfig registry.Services.lwio.Parameters.Drivers.nfs.SecurityCacheUidGidLruSize=4000