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Bug 1533266

Summary:	[RHCS 2.5]filestore: randomize split threshold
Product:	[Red Hat Storage] Red Hat Ceph Storage	Reporter:	Vikhyat Umrao <vumrao>
Component:	RADOS	Assignee:	Josh Durgin <jdurgin>
Status:	CLOSED ERRATA	QA Contact:	shylesh <shmohan>
Severity:	urgent	Docs Contact:	Bara Ancincova <bancinco>
Priority:	urgent
Version:	2.4	CC:	agunn, anharris, ceph-eng-bugs, dzafman, hnallurv, jdurgin, kchai, kdreyer, shmohan, tbrekke, uboppana
Target Milestone:	rc	Keywords:	FutureFeature
Target Release:	2.5
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	RHEL: ceph-10.2.10-10.el7cp Ubuntu: ceph_10.2.10-7redhat1xenial	Doc Type:	Enhancement
Doc Text:	.Split threshold is now randomized Previously, the split threshold was not randomized, so that many OSDs reached it at the same time. As a consequence, such OSDs incurred high latency because they all split directories at once. With this update, the split threshold is randomized which ensures that OSDs split directories over a large period of time.	Story Points:	---
Clone Of:	1337018	Environment:
Last Closed:	2018-02-21 19:47:28 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:
Bug Blocks:	1536401

Comment 1 Vikhyat Umrao 2018-01-10 22:28:35 UTC

Josh has marked it for backporting to the jewel release in the upstream tracker https://tracker.ceph.com/issues/15835.

Comment 2 Josh Durgin 2018-01-11 02:34:14 UTC

pushed to ceph-2-rhel-patches

Comment 11 errata-xmlrpc 2018-02-21 19:47:28 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, 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/RHBA-2018:0340