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| author |   Chuck Lever <chuck.lever@oracle.com> | 2018-03-05 15:13:07 -0500 |
|---|---|---|
| committer |   Anna Schumaker <Anna.Schumaker@Netapp.com> | 2018-04-10 16:06:22 -0400 |
| commit | 78215759e20d859b8f1de7d0aebd08878fbc4eed (patch) | |
| tree | 8817e841aacc3cd1272679b0cf11345000fff89a /net/sunrpc/xprtmultipath.c | |
| parent | SUNRPC: Make RTT measurement more precise (Receive) (diff) | |
| download | linux-dev-78215759e20d859b8f1de7d0aebd08878fbc4eed.tar.xz linux-dev-78215759e20d859b8f1de7d0aebd08878fbc4eed.zip | |
SUNRPC: Make RTT measurement more precise (Send)
Some RPC transports have more overhead in their send_request
callouts than others. For example, for RPC-over-RDMA:
- Marshaling an RPC often has to DMA map the RPC arguments
- Registration methods perform memory registration as part of
marshaling
To capture just server and network latencies more precisely: when
sending a Call, capture the rq_xtime timestamp _after_ the transport
header has been marshaled.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc/xprtmultipath.c')
0 files changed, 0 insertions, 0 deletions