Bug 1500646

Summary:	[GSS] I/O between gluster and clients is very slow
Product:	[Red Hat Storage] Red Hat Gluster Storage	Reporter:	Damian Wojsław <dwojslaw>
Component:	glusterfs	Assignee:	Raghavendra G <rgowdapp>
Status:	CLOSED INSUFFICIENT_DATA	QA Contact:	Bala Konda Reddy M <bmekala>
Severity:	high	Docs Contact:
Priority:	high
Version:	rhgs-3.1	CC:	abhishku, amukherj, atumball, bkunal, dwojslaw, moagrawa, nbalacha, pkarampu, psony, rgowdapp, rhs-bugs, vbellur
Target Milestone:	---	Keywords:	Performance, 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:	2018-11-10 02:43:33 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 Damian Wojsław 2017-10-11 09:17:39 UTC

Description of problem:
During various tests Customer experiences constant slow I/O between client and server:
Copying 1.3 Go of data (4Ko file) :
- Source -> Gluster Volume (fuse) : 30 Ko/s
- Source -> Gluster client local : 3 Mo/s
- Gluster client local -> Gluster Volume (fuse) : 30 Ko/s

Several runs were performed, results are consistent.

Version-Release number of selected component (if applicable):
Red Hat Gluster Storage 3.1 update 3
Red Hat Enterprise Linux 7.3
gluster-nagios-addons-0.2.7-1.el7rhgs.x86_64                Wed Feb  8 14:35:51 2017
gluster-nagios-common-0.2.4-1.el7rhgs.noarch                Wed Feb  8 14:34:28 2017
glusterfs-3.7.9-12.el7rhgs.x86_64                           Wed Feb  8 14:34:18 2017
glusterfs-api-3.7.9-12.el7rhgs.x86_64                       Wed Feb  8 14:34:19 2017
glusterfs-cli-3.7.9-12.el7rhgs.x86_64                       Wed Feb  8 14:34:23 2017
glusterfs-client-xlators-3.7.9-12.el7rhgs.x86_64            Wed Feb  8 14:34:19 2017
glusterfs-fuse-3.7.9-12.el7rhgs.x86_64                      Wed Feb  8 14:34:20 2017
glusterfs-ganesha-3.7.9-12.el7rhgs.x86_64                   Wed Feb  8 14:36:10 2017
glusterfs-geo-replication-3.7.9-12.el7rhgs.x86_64           Wed Feb  8 14:35:47 2017
glusterfs-libs-3.7.9-12.el7rhgs.x86_64                      Wed Feb  8 14:34:17 2017
glusterfs-rdma-3.7.9-12.el7rhgs.x86_64                      Wed Feb  8 14:36:11 2017
glusterfs-server-3.7.9-12.el7rhgs.x86_64                    Wed Feb  8 14:35:45 2017
nfs-ganesha-gluster-2.3.1-8.el7rhgs.x86_64                  Wed Feb  8 14:35:48 2017
python-gluster-3.7.9-12.el7rhgs.noarch                      Wed Feb  8 14:34:29 2017
samba-vfs-glusterfs-4.4.5-3.el7rhgs.x86_64                  Wed Feb  8 14:36:00 2017
vdsm-gluster-4.17.33-1.el7rhgs.noarch                       Wed Feb  8 14:36:05 2017


How reproducible:


Steps to Reproduce:
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Expected results:


Additional info:
In next comment.

Comment 22 Amar Tumballi 2018-10-30 08:50:09 UTC

An year since the last update, and the case is closed! (without any response from customer).

We know for sure that a single threaded copy on glusterfs for small file can lead to performance issues, and the suggested work-around looks fine.

Let us know what are the next steps here! We are in the process of fixing the performance issues for small file in upstream, and there are discussions, but we can't do anything for this particular bug for now.

Planning to close it as WONTFIX?