Bug 1021089

Summary:	quota: performance degradation, limit-set on 64000 directories is taking long time
Product:	[Red Hat Storage] Red Hat Gluster Storage	Reporter:	Saurabh <saujain>
Component:	glusterd	Assignee:	Krutika Dhananjay <kdhananj>
Status:	CLOSED DUPLICATE	QA Contact:	Sudhir D <sdharane>
Severity:	urgent	Docs Contact:
Priority:	unspecified
Version:	2.1	CC:	grajaiya, kdhananj, mzywusko, vbellur
Target Milestone:	---	Keywords:	ZStream
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-10-23 13:44:57 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:

Description Saurabh 2013-10-19 09:47:19 UTC

Description of problem:
I have been trying to set quota limits on 64000 directories and since last 14-15 hours it has only finished somewhere around 7200 directories having limits set.

When I started the test, the limit set on directories was quite fast but now it is quite slow. 


Version-Release number of selected component (if applicable):
gluster-3.4.0.35rhs

How reproducible:
performance degradation happen to be seen second time

Steps to Reproduce:
1. mount volume over nfs
2. create 64000 directories
3. set quota limits on 64000 directories

Actual results:
it has just finished 7200 directories in last 14-15 hours

Expected results:
this performance is very slow, as per the expectation 1/4 sec should be taken to set limit and no eventual degradation in performance.

Additional info:
I having 4 VM setup on a hyper visor, dedicated just for quota related test efforts
each VM has 8GB RAM and 4CPUs.