doc: include read, write, metadata average latencies in doc/man.

Also, the sample cephfs-top image in the doc is outdated. Update that!

Fixes: http://tracker.ceph.com/issues/48619
Signed-off-by: Venky Shankar <vshankar@redhat.com>
(cherry picked from commit aa04f3faedb6edcb0897e802a8390904deb6f936)

diff --git a/doc/cephfs/cephfs-top.png b/doc/cephfs/cephfs-top.png
index f65aea1d2b9011701999729c8c71f9f00344c845..807029d00703effe49032b6f7d2d6f46492f7cb6 100644 (file)
Binary files a/doc/cephfs/cephfs-top.png and b/doc/cephfs/cephfs-top.png differ

diff --git a/doc/man/8/cephfs-top.rst b/doc/man/8/cephfs-top.rst
index 654633c7568038565dd750694cb33acf4409cfeb..c3719cd36fcd8fa48c0233b72600676547cdd6b6 100644 (file)
--- a/doc/man/8/cephfs-top.rst
+++ b/doc/man/8/cephfs-top.rst
@@ -43,18 +43,6 @@ Descriptions of fields
 
    cap hit rate
 
-.. describe:: rlat
-
-   read latency
-
-.. describe:: wlat
-
-   write latency
-
-.. describe:: mlat
-
-   metadata latency
-
 .. describe:: dlease
 
    dentry lease rate
@@ -95,6 +83,29 @@ Descriptions of fields
 
    speed of write IOs compared with the last refresh
 
+.. describe:: rlatavg
+
+   average read latency
+
+.. describe:: rlatsd
+
+   standard deviation (variance) for read latency
+
+.. describe:: wlatavg
+
+   average write latency
+
+.. describe:: wlatsd
+
+   standard deviation (variance) for write latency
+
+.. describe:: mlatavg
+
+   average metadata latency
+
+.. describe:: mlatsd
+
+   standard deviation (variance) for metadata latency
 
 Availability
 ============