doc: update rgw configuration on multiple rgw rados handlers feature

Signed-off-by: Yuan Zhou <yuan.zhou@intel.com>

diff --git a/doc/radosgw/config-ref.rst b/doc/radosgw/config-ref.rst
index 7cac514562a7bf1c86a6b6e73e02e20dc4d0aebc..b77d9277e37716a4202b35879a0b15e945f3e65f 100644 (file)
--- a/doc/radosgw/config-ref.rst
+++ b/doc/radosgw/config-ref.rst
@@ -131,6 +131,18 @@ Ceph configuration file, the default value will be set automatically.
 :Default: 100 threads.
 
 
+``rgw num rados handles``
+
+:Description: The numer of the `RADOS cluster handles`_ for Ceph Object Gateway.
+              Having a configurable number of RADOS handles is resulting in
+              significant performance boost for all types of workloads. Each RGW
+              worker thread would now get to pick a RADOS handle for its lifetime,
+              from the available bunch.
+
+:Type: Integer
+:Default: ``1``
+
+
 ``rgw num control oids``
 
 :Description: The number of notification objects used for cache synchronization
@@ -966,3 +978,4 @@ Keystone Settings
 .. _Architecture: ../../architecture#data-striping
 .. _Pool Configuration: ../../rados/configuration/pool-pg-config-ref/
 .. _Cluster Pools: ../../rados/operations/pools
+.. _Rados cluster handles: ../../rados/api/librados-intro/#step-2-configuring-a-cluster-handle