Bug 1999710

Summary:	[RFE] [Ceph-Dashboard] Implement BlueStore onode hit/miss counters into the dashboard
Product:	[Red Hat Storage] Red Hat Ceph Storage	Reporter:	Mike Hackett <mhackett>
Component:	Ceph-Dashboard	Assignee:	Aashish sharma <aasharma>
Status:	CLOSED ERRATA	QA Contact:	Sunil Angadi <sangadi>
Severity:	medium	Docs Contact:	Akash Raj <akraj>
Priority:	medium
Version:	5.0	CC:	aasharma, akraj, ceph-eng-bugs, epuertat, kdreyer, mnelson, sangadi, tserlin, vereddy, vumrao
Target Milestone:	---	Keywords:	FutureFeature
Target Release:	5.2	Flags:	sangadi: needinfo+
Hardware:	All
OS:	Unspecified
Whiteboard:
Fixed In Version:	ceph-16.2.8-2.el8cp	Doc Type:	Enhancement
Doc Text:	.Dashboard displays onode hit or miss counters With this release, the dashboard provides details pulled from the Bluestore stats, to display the onode hit or miss counters to help you deduce whether increasing the RAM per OSD could help improve the cluster performance.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-08-09 17:36:05 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2098105
Bug Blocks:	2102272

Description Mike Hackett 2021-08-31 15:39:44 UTC

Description of problem:

Increasing RAM per OSD in a Ceph cluster can improve the performance of the OSD in some use cases. By default we deploy 5GB per OSD, which in some cases can limit the performance of the OSD when the physical node has additional RAM available that "could" be allocated to the OSD's. 

The dashboard can provide the details pulled from Bluestore stats in order to display the onode hit/miss counters to help inform the customer if increasing RAM per OSD could help improve the performance for their cluster. With this data the customer can make the decision if they want to increase the avail memory per OSD or increase the RAM in the system.

Version-Release number of selected component (if applicable):
RHCS 5.0

Comment 25 Aashish sharma 2022-08-01 05:21:35 UTC

Hi Akash,

Doc text looks good.

Comment 27 errata-xmlrpc 2022-08-09 17:36:05 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Moderate: Red Hat Ceph Storage Security, Bug Fix, and Enhancement Update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2022:5997