Bug 1329185

Summary: [scale] - big jvm GC cycles while ramp up vms.
Product: [oVirt] ovirt-engine Reporter: Eldad Marciano <emarcian>
Component: Backend.CoreAssignee: Martin Perina <mperina>
Status: CLOSED DEFERRED QA Contact: Eldad Marciano <emarcian>
Severity: high Docs Contact:
Priority: medium    
Version: 3.6.5.1CC: bugs, emarcian, oourfali
Target Milestone: ---Keywords: Performance
Target Release: ---Flags: ykaul: ovirt-4.2?
rule-engine: planning_ack?
rule-engine: devel_ack?
rule-engine: testing_ack?
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2017-01-25 14:44:49 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: Infra RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description Eldad Marciano 2016-04-21 11:03:54 UTC 
Description of problem:
engine java heap usage running big GC cycles in size ~1G.
this behavior exist for along time.

see the following report:

further profiling investigation required


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


How reproducible:
100%

Steps to Reproduce:
1. 1 cluster, 500 hosts, ramp up vms.
2.
3.

Actual results:
big GC cycles

Expected results:
smaller GC cycles might improve the performance such as memory and CPU utilization.

Additional info:
Comment 2 Sandro Bonazzola 2016-05-02 10:06:46 UTC 
Moving from 4.0 alpha to 4.0 beta since 4.0 alpha has been already released and bug is not ON_QA.
Comment 3 Yaniv Lavi 2016-05-23 13:21:27 UTC 
oVirt 4.0 beta has been released, moving to RC milestone.
Comment 4 Yaniv Lavi 2016-05-23 13:24:23 UTC 
oVirt 4.0 beta has been released, moving to RC milestone.
Comment 7 Yaniv Kaul 2016-07-11 08:43:13 UTC 
Raising severity and priority so we'll get to look at it early in 4.1, wrt scale and performance.
Comment 8 Yaniv Kaul 2017-01-25 14:44:49 UTC 
Closing - for the time being, we don't see how it affects the user experience.