diff options
| author | Xiubo Li <xiubli@redhat.com> | 2020-03-19 23:45:01 -0400 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2020-06-01 13:22:51 +0200 |
| commit | 97e27aaa9a2cbd6238c66b3251d397e0eacc9968 (patch) | |
| tree | cc34ba226bc715dac52a87025351d3ae5e8d1465 /include/linux/ceph | |
| parent | 1af16d547f3080d71060092d22e79a34527d1d08 (diff) | |
ceph: add read/write latency metric support
Calculate the latency for OSD read requests. Add a new r_end_stamp
field to struct ceph_osd_request that will hold the time of that
the reply was received. Use that to calculate the RTT for each call,
and divide the sum of those by number of calls to get averate RTT.
Keep a tally of RTT for OSD writes and number of calls to track average
latency of OSD writes.
URL: https://tracker.ceph.com/issues/43215
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'include/linux/ceph')
| -rw-r--r-- | include/linux/ceph/osd_client.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 9d9f745b98a1..734f7c6a9f56 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -8,6 +8,7 @@ #include <linux/mempool.h> #include <linux/rbtree.h> #include <linux/refcount.h> +#include <linux/ktime.h> #include <linux/ceph/types.h> #include <linux/ceph/osdmap.h> @@ -213,6 +214,8 @@ struct ceph_osd_request { /* internal */ unsigned long r_stamp; /* jiffies, send or check time */ unsigned long r_start_stamp; /* jiffies */ + ktime_t r_start_latency; /* ktime_t */ + ktime_t r_end_latency; /* ktime_t */ int r_attempts; u32 r_map_dne_bound; |