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sunrpc: Report per-RPC execution stats

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Introduce a mechanism to report the server-side execution latency of
each RPC. The goal is to enable user space to filter the trace
record for latency outliers, build histograms, etc.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Chuck Lever 2018-03-27 10:51:39 -04:00 • committed by J. Bruce Fields
parent 0b9547bf6b
commit aaba72cd4e
3 changed files with 24 additions and 1 deletions
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include/linux/sunrpc/svc.h
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@ -283,6 +283,7 @@ struct svc_rqst {
int rq_reserved; /* space on socket outq
* reserved for this request
*/
ktime_t rq_stime; /* start time */
struct cache_req rq_chandle; /* handle passed to caches for
* request delaying