[Lustre-discuss] understanding max_rpc_in_flight

teng wang tzw0019 at gmail.com
Wed Mar 11 17:15:42 PDT 2015

Dear All,

Is there any concrete explanation of max_rpc_in_flight?
Most definitions online simply interpret it as the name suggests.
Can any one explain it from the I/O path?
For example, when the client wants to write, it sends an RPC
for the write to the object server. The server then pulls
the data with RDMA and commit to disks. During this process,
only 1 RPC is issued. What's the situation for 'max_rpc_in_flight'?
Could any one explain it more concretely?

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