From: Neha <nojha@redhat.com>
Date: Wed, 22 Jan 2020 15:21:21 +0000 (+0000)
Subject: mgr/pg_autoscaler: default to pg_num[_min] = 32
X-Git-Tag: v15.1.0~66^2~1
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=0c7991c0e87b2924c6584a064259190d6882a44d;p=ceph.git

mgr/pg_autoscaler: default to pg_num[_min] = 32

78bf92448002eece7501da01b67f900a84207e70 increased the default to 16.
Increasing it further to 32 will provide enough parallelism to improve
out of the box performance for new users.

Fixes: https://tracker.ceph.com/issues/43757
Signed-off-by: Neha Ojha <nojha@redhat.com>
---

diff --git a/doc/rados/configuration/pool-pg-config-ref.rst b/doc/rados/configuration/pool-pg-config-ref.rst
index 370e7044e22c..e0b81200cf62 100644
--- a/doc/rados/configuration/pool-pg-config-ref.rst
+++ b/doc/rados/configuration/pool-pg-config-ref.rst
@@ -198,7 +198,7 @@ Ceph configuration file.
               value is the same as ``pg_num`` with ``mkpool``.
 
 :Type: 32-bit Integer
-:Default: ``16``
+:Default: ``32``
 
 
 ``osd pool default pgp num``
diff --git a/src/common/options.cc b/src/common/options.cc
index fbd171c743b7..254a038e2b9c 100644
--- a/src/common/options.cc
+++ b/src/common/options.cc
@@ -2570,7 +2570,7 @@ std::vector<Option> get_global_options() {
     .add_service("mon"),
 
     Option("osd_pool_default_pg_num", Option::TYPE_UINT, Option::LEVEL_ADVANCED)
-    .set_default(16)
+    .set_default(32)
     .set_description("number of PGs for new pools")
     .set_flag(Option::FLAG_RUNTIME)
     .add_service("mon"),
diff --git a/src/pybind/mgr/pg_autoscaler/module.py b/src/pybind/mgr/pg_autoscaler/module.py
index e3dc83ff2cd1..db2d0a72218b 100644
--- a/src/pybind/mgr/pg_autoscaler/module.py
+++ b/src/pybind/mgr/pg_autoscaler/module.py
@@ -24,7 +24,7 @@ Some terminology is made up for the purposes of this module:
 
 INTERVAL = 5
 
-PG_NUM_MIN = 16  # unless specified on a per-pool basis
+PG_NUM_MIN = 32  # unless specified on a per-pool basis
 
 def nearest_power_of_two(n):
     v = int(n)