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Chuck Lever 0b87a46b43 SUNRPC: Make RTT measurement more precise (Receive) 
Some RPC transports have more overhead in their reply handlers
than others. For example, for RPC-over-RDMA:

- RPC completion has to wait for memory invalidation, which is
  not a part of the server/network round trip

- Recently a context switch was introduced into the reply handler,
  which further artificially inflates the measure of RPC RTT

To capture just server and network latencies more precisely: when
receiving a reply, compute the RTT as soon as the XID is recognized
rather than at RPC completion time.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
 		2018-04-10 16:06:22 -04:00
..
auth_gss kernel: make groups_sort calling a responsibility group_info allocators 2017-12-14 16:00:49 -08:00
xprtrdma xprtrdma: Move creation of rl_rdmabuf to rpcrdma_create_req 2018-04-10 16:06:22 -04:00
Kconfig svcrdma: Introduce local rdma_rw API helpers 2017-04-25 17:25:55 -04:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
addr.c replace strict_strto calls 2014-07-12 18:45:49 -04:00
auth.c sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h> 2017-03-02 08:42:31 +01:00
auth_generic.c NFS client updates for Linux 4.9 2016-10-13 21:28:20 -07:00
auth_null.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
auth_unix.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
backchannel_rqst.c SUNRPC: Don't hold the transport lock when receiving backchannel data 2017-08-16 15:10:16 -04:00
cache.c vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
clnt.c SUNRPC: Remove rpc_protocol() 2018-01-14 23:06:30 -05:00
debugfs.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
netns.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rpc_pipe.c vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
rpcb_clnt.c sunrpc: remove net pointer from messages 2017-11-17 16:43:51 -05:00
sched.c fix parallelism for rpc tasks 2018-02-08 16:24:35 -05:00
socklib.c sunrpc: do not pull udp headers on receive 2016-04-11 15:31:33 -04:00
stats.c sunrpc: move pc_count out of struct svc_procinfo 2017-07-13 15:58:02 -04:00
sunrpc.h xprtrdma: "Support" call-only RPCs 2018-04-10 16:06:22 -04:00
sunrpc_syms.c sunrpc: exit_net cleanup check added 2017-11-17 16:43:50 -05:00
svc.c Modules updates for v4.15 2017-11-15 13:46:33 -08:00
svc_xprt.c treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
svcauth.c locking/atomic, kref: Implement kref_put_lock() 2017-01-18 10:03:29 +01:00
svcauth_unix.c kernel: make groups_sort calling a responsibility group_info allocators 2017-12-14 16:00:49 -08:00
svcsock.c This request is late, apologies. 2018-02-08 15:18:32 -08:00
sysctl.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
timer.c
…
xdr.c sunrpc: Fix xdr_init_decode_pages() documenting comment 2017-04-25 16:12:34 -04:00
xprt.c SUNRPC: Make RTT measurement more precise (Receive) 2018-04-10 16:06:22 -04:00
xprtmultipath.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xprtsock.c SUNRPC: Move xprt_update_rtt callsite 2018-04-10 16:06:22 -04:00