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SUNRPC: introduce per-task RPC iostats

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Account for various things that occur while an RPC task is executed.
Separate timers for RPC round trip and RPC execution time show how
long RPC requests wait in queue before being sent.  Eventually these
will be accumulated at xprt_release time in one place where they can
be viewed from userland.

Test plan:
Compile kernel with CONFIG_NFS enabled.

Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever
2006-03-20 13:44:17 -05:00
committed by Trond Myklebust
parent 262ca07de4
commit ef759a2e54
5 changed files with 14 additions and 0 deletions
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2
net/sunrpc/clnt.c
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@@ -996,6 +996,8 @@ call_timeout(struct rpc_task *task)
}
dprintk("RPC: %4d call_timeout (major)\n", task->tk_pid);
task->tk_timeouts++;
if (RPC_IS_SOFT(task)) {
printk(KERN_NOTICE "%s: server %s not responding, timed out\n",
clnt->cl_protname, clnt->cl_server);