Managing NFS and KRPC Kernel Configurations in HP-UX 11i v3 (762807-002, June 2014)

2.4.3 rpc_svc_default_max_same_xprt
Description
The rpc_svc_default_max_same_xprt tunable controls the maximum number of requests that are
processed for each transport endpoint, (or connection), before switching transport endpoints. The
KRPC has a pool of service threads and a pool of transport endpoints. Any of the service threads
can service requests from any of the endpoints. To enhance performance, multiple requests are
serviced on each transport endpoint before switching endpoints.
Tested Values
Default: 8 requests
Min: 1 request
Max: 64 requests
Note: If the tunable is set to a value greater than 64
requests, an informational warning is issued, at runtime.
Any value greater than 64 is beyond the tested limits.
Restrictions on Changing
The rpc_svc_default_max_same_xprt tunable is dynamic. System reboot is not required to activate
changes made to this tunable. However, the maximum number of requests that can be processed
before switching transport endpoints is set when the transport endpoint is configured into the KRPC
subsystem. Changes made to this tunable affect only the new endpoints and not the existing ones.
Modifying the Value
Modify the value of this tunable so services can take advantage of certain client behaviors, such as
write clustering. Increasing the value of this tunable enables the server to take better advantage of
client behaviors.
2.4.4 rpc_svc_idle_timeout
Description
The rpc_svc_idle_timeout tunable controls the time interval, in milliseconds, that a TCP connection
between the server and client may remain idle before it is forcibly closed by the NFS server system.
Tested Values
Default: 360000 (6 minutes)
Min: 1000 (1 second)
Max: 600000 (10 minutes)