linux.git/net/sunrpc/stats.c, branch v3.12

SUNRPC: Deprecate rpc_client->cl_protname

2013-08-30T13:19:34+00:00

It just duplicates the cl_program->name, and is not used in any fast
paths where the extra dereference will cause a hit.

Signed-off-by: Trond Myklebust

procfs: new helper - PDE_DATA(inode)

2013-04-09T18:13:32+00:00

The only part of proc_dir_entry the code outside of fs/proc
really cares about is PDE(inode)->data.  Provide a helper
for that; static inline for now, eventually will be moved
to fs/proc, along with the knowledge of struct proc_dir_entry
layout.

Signed-off-by: Al Viro

SUNRPC: Use RCU to dereference the rpc_clnt.cl_xprt field

2012-03-02T20:36:38+00:00

A migration event will replace the rpc_xprt used by an rpc_clnt.  To
ensure this can be done safely, all references to cl_xprt must now use
a form of rcu_dereference().

Special care is taken with rpc_peeraddr2str(), which returns a pointer
to memory whose lifetime is the same as the rpc_xprt.

Signed-off-by: Trond Myklebust 
[ cel: fix lockdep splats and layering violations ]
[ cel: forward ported to 3.4 ]
[ cel: remove rpc_max_reqs(), add rpc_net_ns() ]
Signed-off-by: Chuck Lever 
Signed-off-by: Trond Myklebust

NFS: include filelayout DS rpc stats in mountstats

2012-02-17T18:39:47+00:00

Include RPC statistics from all data servers in /proc/self/mountstats for pNFS
filelayout mounts.

Signed-off-by: Weston Andros Adamson 
Signed-off-by: Trond Myklebust

SUNRPC: register service stats /proc entries in passed network namespace context

2012-02-01T00:28:18+00:00

This patch makes it possible to create NFSd program entry ("/proc/net/rpc/nfsd")
in passed network namespace context instead of hard-coded "init_net".

Signed-off-by: Stanislav Kinsbursky 
Signed-off-by: Trond Myklebust

SUNRPC: register RPC stats /proc entries in passed network namespace context

2012-02-01T00:28:17+00:00

This patch makes it possible to create NFS program entry ("/proc/net/rpc/nfs")
in passed network namespace context instead of hard-coded "init_net".

Signed-off-by: Stanislav Kinsbursky 
Signed-off-by: Trond Myklebust

SUNRPC: Simplify rpc_alloc_iostats by removing pointless local variable

2010-11-16T16:58:51+00:00

Hi,

We can simplify net/sunrpc/stats.c::rpc_alloc_iostats() a bit by getting
rid of the unneeded local variable 'new'.

Please CC me on replies.

Signed-off-by: Jesper Juhl 
Signed-off-by: Trond Myklebust

sunrpc: Make the /proc/net/rpc appear in net namespaces

2010-09-27T14:16:12+00:00

Signed-off-by: Pavel Emelyanov 
Signed-off-by: J. Bruce Fields

SUNRPC: Move the task->tk_bytes_sent and tk_rtt to struct rpc_rqst

2010-05-14T19:09:36+00:00

It seems strange to maintain stats for bytes_sent in one structure, and
bytes received in another. Try to assemble all the RPC request-related
stats in struct rpc_rqst

Signed-off-by: Trond Myklebust

SUNRPC: Replace jiffies-based metrics with ktime-based metrics

2010-05-14T19:09:33+00:00

Currently RPC performance metrics that tabulate elapsed time use
jiffies time values.  This is problematic on systems that use slow
jiffies (for instance 100HZ systems built for paravirtualized
environments).  It is also a problem for computing precise latency
statistics for advanced network transports, such as InfiniBand,
that can have round-trip latencies significanly faster than a single
clock tick.

For the RPC client, adopt the high resolution time stamp mechanism
already used by the network layer and blktrace: ktime.

We use ktime format time stamps for all internal computations, and
convert to milliseconds for presentation.  As a result, we need only
addition operations in the performance critical paths; multiply/divide
is required only for presentation.

We could report RTT metrics in microseconds.  In fact the mountstats
format is versioned to accomodate exactly this kind of interface
improvement.

For now, however, we'll stay with millisecond precision for
presentation to maintain backwards compatibility with the handful of
currently deployed user space tools.  At a later point, we'll move to
an API such as BDI_STATS where a finer timestamp precision can be
reported.

Signed-off-by: Chuck Lever 
Signed-off-by: Trond Myklebust