The document analyzes data from the online communities and code repositories of four open source Infrastructure as a Service (IaaS) projects: OpenStack, OpenNebula, Eucalyptus, and CloudStack. It includes 17 figures that visualize metrics like monthly message/thread counts, participant numbers, code commits, and contributor/organization numbers for each project over time from 2009 to 2013. The goal is to understand and compare the development and adoption of these four open source IaaS platforms.

1. CY13-Q4
Open Source IaaS Community Analysis
OpenStack vs OpenNebula vs Eucalyptus vs CloudStack
Qingye Jiang (John)
qjiang@ieee.org
http://www.qyjohn.net/

2. Discussion Data Source
●
OpenStack
●
●
https://answers.launchpad.net/openstack/
●
http://lists.openstack.org/pipermail/*/
●
●
https://lists.launchpad.net/openstack/
https://ask.openstack.org/
OpenNebula
●
●
http://lists.opennebula.org/pipermail/ecosystem-opennebula.org/
●
●
http://lists.opennebula.org/pipermail/users-opennebula.org/
http://lists.opennebula.org/pipermail/interoperability-opennebula.org/
Eucalyptus
●
●
http://lists.eucalyptus.com/pipermail/community/ (Until 2013-01)
●
●
https://engage.eucalyptus.com/customer/portal/topics/215645-general-discussions/questions
https://groups.google.com/a/eucalyptus.com/forum/#!forum/euca-users
CloudStack
●
http://mail-archives.apache.org/mod_mbox/incubator-cloudstack-users/
●
http://mail-archives.apache.org/mod_mbox/incubator-cloudstack-dev/
●
http://mail-archives.apache.org/mod_mbox/incubator-cloudstack-users-cn/
●
http://www.cloudstack.org/forum/index.html (Until 2012-09)

3. CloudStack
OpenStack
OpenNebula
Eucalyptus
Figure 1 - Monthly Number of Threads
1600
1400
1200
1000
800
600
400
200
0
2009.04
2009.10
2010.04
2010.10
2011.04
2011.10
2012.04
2012.10
2013-04
2013-10
2009.01
2009.07
2010.01
2010.07
2011.01
2011.07
2012.01
2012.07
2013-01
2013-07 2013-12

4. CloudStack
OpenStack
OpenNebula
Eucalyptus
Figure 2 - Monthly Number of Messages
4500
4000
3500
3000
2500
2000
1500
1000
500
0
2009.04
2009.10
2010.04
2010.10
2011.04
2011.10
2012.04
2012.10
2013-04
2013-10
2009.01
2009.07
2010.01
2010.07
2011.01
2011.07
2012.01
2012.07
2013-01
2013-07 2013-12

5. CloudStack
OpenStack
OpenNebula
Eucalyptus
Figure 3 - Monthly Participation Ratio
14.00
12.00
10.00
8.00
6.00
4.00
2.00
0.00
2009.04
2009.10
2010.04
2010.10
2011.04
2011.10
2012.04
2012.10
2013-04
2013-10
2009.01
2009.07
2010.01
2010.07
2011.04
2011.07
2012.01
2012.07
2013-01
2013-07 2013-12

6. CloudStack
OpenStack
OpenNebula
Eucalyptus
Figure 4 - Monthly Number of Participants
1200
1000
800
600
400
200
0
2009.04
2009.10
2010.04
2010.10
2011.04
2011.10
2012.04
2012.10
2013-04
2013-10
2009.01
2009.07
2010.01
2010.07
2011.01
2011.07
2012.01
2012.07
2013-01
2013-07 2013-12

7. CloudStack
OpenStack
OpenNebula
Eucalyptus
Figure 5 - Accumulated Community Population
7000
6000
5000
4000
3000
2000
1000
0
2009.04
2009.10
2010.04
2010.10
2011.04
2011.10
2012.04
2012.19
2013-04
2013-10
2009.01
2009.07
2010.01
2010.07
2011.01
2011.07
2012.01
2012.07
2013-01
2013-07 2013-12

8. CloudStack
OpenStack
OpenNebula
Eucalyptus
Figure 6 - Monthly Population Growth
450
400
350
300
250
200
150
100
50
0
2009.04
2009.10
2010.04
2010.10
2011.04
2011.10
2012.04
2012.10
2013-04
2013-10
2009.01
2009.07
2010.01
2010.07
2011.01
2011.07
2012.01
2012.07
2013-01
2013-07 2013-12

9. 1200
Figure 7 - Monthly Participants vs New Members
OpenStack New
OpenStack Total
CloudStack New
CloudStack Total
OpenNebula New
OpenNebula Total
1000
800
Eucalyptus New
Eucalyptus Total
600
400
200
0
2009.04
2009.10
2010.04
2010.10
2011.04
2011.10
2012.04
2012.10
2013-04
2013-10
2009.01
2009.07
2010.01
2010.07
2011.01
2011.07
2012.01
2012.07
2013-01
2013-07 2013-12

10. 7000
Figure 8 - Active Community Population
6000
Total
5000
Last Quarter
Last Month
4000
3000
2000
1000
0
OpenStack
OpenNebula
Eucalyptus
CloudStack

11. Figure 9 – Community Activeness Index
Computing the Reference Data Set
OpenStack
OpenNebula Eucalyptus
CloudStack
Average
Quarterly
Messages
11749
1343
706
7767
5391
Quarterly
Participation
Ratio
2.75
2.95
3.00
3.52
3.06
Quarterly
Population
2031
139
126
383
649
Relative
Quarterly
Messages
Relative
Quarterly
Participation
Ratio
Relative
Quarter
Population
Activeness
Index
OpenStack
2.17
0.90
2.92
6.00
OpenNebula
0.25
0.97
0.20
1.42
Eucalyptus
0.13
0.98
0.18
1.29
CloudStack
1.44
1.15
0.70
3.29
Computing the Activeness Index

12. Git Data Source
●
OpenStack
●
●
●
https://github.com/openstack/ (57 projects)
https://github.com/openstack-infra/ (33 projects)
OpenNebula
●
●
Eucalyptus
●
●
https://git.opennebula.org/one.git
https://github.com/eucalyptus/eucalyptus.git
CloudStack
●
https://git-wip-us.apache.org/repos/asf/cloudstack.git

13. 3000
OpenStack
OpenNebula
Eucalyptus
CloudStack
Figure 10 -- Monthly Git Commits
2500
2000
1500
1000
500
0
2009-04
2009-10
2010-04
2010-10
2011-04
2011-10
2012-04
2012-10
2013-04
2013-10
2009-01
2009-07
2010-01
2010-07
2011-01
2011-07
2012-01
2012-07
2013-01
2013-07 2013-12

14. 1200
Cinder
Glance
Horizon
Keystone
Nova
Neutron
Swift
Figure 11 -- Monthly Git Commits (OpenStack)
1000
800
600
400
200
2010-10
2010-07
2011-04
2011-01
2011-10
2011-07
2012-04
2012-01
2012-10
2012-07
2013-04
2013-01
0
2013-10
2013-07
2013-12

15. 450
OpenStack
OpenNebula
Eucalyptus
CloudStack
Figure 12 -- Monthly Git Contributors
400
350
300
250
200
150
100
50
0
2009-04
2009-10
2010-04
2010-10
2011-04
2011-10
2012-04
2012-10
2013-04
2013-10
2009-01
2009-07
2010-01
2010-07
2011-01
2011-07
2012-01
2012-07
2013-01
2013-07 2013-12

16. Cinder
Glance
Horizon
Keystone
Nova
Neutron
Swift
140
Figure 13 -- Monthly Git Contributors (OpenStack)
120
100
80
60
40
20
2010-07
2010-10
2011-01
2011-04
2011-07
2011-10
2012-01
2012-04
2012-07
2012-10
2013-01
2013-04
0
2013-10
2013-07
2013-12

17. 140
OpenStack
OpenNebula
Eucalyptus
CloudStack
Figure 14 -- Monthly Git Domains
120
100
80
60
40
20
0
2009-04
2009-10
2010-04
2010-10
2011-04
2011-10
2012-04
2012-10
2013-04
2013-10
2009-01
2009-07
2010-01
2010-07
2011-01
2011-07
2012-01
2012-07
2013-01
2013-07 2013-12

18. 45
Cinder
Glance
Horizon
Keystone
Nova
Neutron
Swift
Figure 15 -- Monthly Git Domains (OpenStack)
40
35
30
25
20
15
10
5
2010-10
2010-07
2011-04
2011-01
2011-10
2011-07
2012-04
2012-01
2012-10
2012-07
2013-04
2013-01
0
2013-10
2013-07
2013-12

19. 2000
OpenStack
OpenNebula
Eucalyptus
CloudStack
Figure 16 -- Accumulated Developer Population
1800
1600
1400
1200
1000
800
600
400
200
0
2009-04
2009-10
2010-04
2010-10
2011-04
2011-10
2012-04
2012-10
2013-04
2013-10
2009-01
2009-07
2010-01
2010-07
2011-01
2011-07
2012-01
2012-07
2013-01
2013-07 2013-12

20. 600
OpenStack
OpenNebula
Eucalyptus
CloudStack
Figure 17 -- Accumulated Contributing Organizations
500
400
300
200
100
0
2009-04
2009-10
2010-04
2010-10
2011-04
2011-10
2012-04
2012-10
2013-04
2013-10
2009-01
2009-07
2010-01
2010-07
2011-01
2011-07
2012-01
2012-07
2013-01
2013-07 2013-12