Bug 1677145

Summary:	Swap and memory usage have been continuously increased by glusterfs native client
Product:	[Red Hat Storage] Red Hat Gluster Storage	Reporter:	Kenichiro Kagoshima <kkagoshi>
Component:	glusterfs	Assignee:	Amar Tumballi <atumball>
Status:	CLOSED WORKSFORME	QA Contact:	Bala Konda Reddy M <bmekala>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rhgs-3.3	CC:	atumball, rgowdapp, rhs-bugs, sankarshan, vbellur
Target Milestone:	---	Keywords:	ZStream
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-05-21 04:50:08 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:	1647277
Bug Blocks:

Comment 4 Amar Tumballi 2019-02-20 10:02:12 UTC

This is a common symptom observed when we don't have lru-limit. bz#1511779, which is proposed for 3.4.4 should resolve this issue.


If customer is not ready to upgrade yet, I recommend them to switch off 'io-cache' based on 2 factors to reduce the memory increase impact.

#1.
> [io-cache.priv]
> page_size=131072
> cache_size=33554432
> cache_used=3781612435840
> inode_count=27512
> cache_timeout=1
> min-file-size=0
> max-file-size=0

The above looks too high, hopefully disabling should help.

#2. https://bugzilla.redhat.com/show_bug.cgi?id=1665029

Comment 8 Amar Tumballi 2019-02-27 03:06:57 UTC

Sorry for missing it out earlier. In our testing, we haven't seen any major impact to server due to turning of 'io-cache'. Please go ahead.

Comment 13 Amar Tumballi 2019-05-21 04:50:08 UTC

https://bugzilla.redhat.com/show_bug.cgi?id=1685361 opened for tracking the pending issue of io-cache showing higher value. The current issues are resolved with comment#8, and also the lru-limit patch in RHGS-3.4.4. Will be closing as WORKSFORME.