From 70c948206f0616c7e46130a26165b6a5d98bade4 Mon Sep 17 00:00:00 2001 From: Xiubo Li Date: Thu, 19 Mar 2020 23:45:02 -0400 Subject: ceph: add metadata perf metric support Add a new "r_ended" field to struct ceph_mds_request and use that to maintain the average latency of MDS requests. URL: https://tracker.ceph.com/issues/43215 Signed-off-by: Xiubo Li Reviewed-by: Jeff Layton Signed-off-by: Ilya Dryomov --- fs/ceph/metric.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'fs/ceph/metric.c') diff --git a/fs/ceph/metric.c b/fs/ceph/metric.c index f5cf32e7789f..9217f35bc2b9 100644 --- a/fs/ceph/metric.c +++ b/fs/ceph/metric.c @@ -44,6 +44,13 @@ int ceph_metric_init(struct ceph_client_metric *m) m->total_writes = 0; m->write_latency_sum = 0; + spin_lock_init(&m->metadata_latency_lock); + m->metadata_latency_sq_sum = 0; + m->metadata_latency_min = KTIME_MAX; + m->metadata_latency_max = 0; + m->total_metadatas = 0; + m->metadata_latency_sum = 0; + return 0; err_i_caps_mis: @@ -123,3 +130,19 @@ void ceph_update_write_latency(struct ceph_client_metric *m, &m->write_latency_sq_sum, lat); spin_unlock(&m->write_latency_lock); } + +void ceph_update_metadata_latency(struct ceph_client_metric *m, + ktime_t r_start, ktime_t r_end, + int rc) +{ + ktime_t lat = ktime_sub(r_end, r_start); + + if (unlikely(rc && rc != -ENOENT)) + return; + + spin_lock(&m->metadata_latency_lock); + __update_latency(&m->total_metadatas, &m->metadata_latency_sum, + &m->metadata_latency_min, &m->metadata_latency_max, + &m->metadata_latency_sq_sum, lat); + spin_unlock(&m->metadata_latency_lock); +} -- cgit