1. SERVER MANAGEMENT MODULE
HIGH PERFORMANCE & HIGH AVAILABILITY
SA – G9
SENADHEERA R.I. A (050415V)
SENARATHNA U.D.P (050422N)
WIMALASENA P.K.C.K (050498B)

2. Server Startup
Node Added to Cluster
MOINC SMM
Load balancer Initialized
Service Repository
Initialize Service Domains
Assignment Services to Domains
User Registration
User and Benchmark Verification
Calculation of node weight for load balancing
Updating User Statistics
Registration request
Services Deployed Idle Request to Server
Statistics Submission
Active State
Idle State

3. Introduction to MOINC – SMM
 Enhances basic server functionalities
 Advanced LB Algorithm
 Credit Management
 MOINC User Management
 Community Portal
 Statistics
 Benchmarking Agents
2/1/2009
3

4. Advanced Load Balancing Algo
 Server Core uses default Round Robin
algorithm provided by Synapse
 Problems :
 Nodes are heterogeneous in terms of performance
& locations
 High risk of allocating high performing & available
nodes to low performing & available services and
vice versa
 Solution :
 Advanced round robin algorithm based on
performance & availability of nodes & services
4
MOINC Server Manager 2/1/2009

5.  Measuring Node’s availability & Performance
 Availability : Node total Contribution
 Performance : Node Benchmark
 Define node weight as
 Measuring WS’s availability and performance
 Availability : hit rate (request count)
 Performance : web service size
where c is the performance constant in both cases
5
MOINC Server Manager 2/1/2009

6.  Clustering and Service Grouping
 Predefined no of domains
 Decide boundaries for domains based on statistics of
weights
min mean max
3 Groups
3 Groups
 Both nodes and web services grouped in the same manner
6
MOINC Server Manager 2/1/2009

7.  As a result, clusters and service groups are
mapped
Clustering Clustering
Domain 1 Domain 1
Clustering
Clustering
Domain k
Domain k
Node Clusters
Service Groups
7
MOINC Server Manager 2/1/2009

8. Agent Benchmarking
 Agent is benchmarked according to Linpack
Algorithm
8
MOINC Server Manager 2/1/2009

9. Verifying Benchmarking algo
 Why we need to verify benchmark Algorithm ?
 Benchmark directly used for credit calculating
 All the source code is freely available
 Attacks can be happen from malicious participants
 How verification happens ?
 Agent send the MD 5 hash value with idle request
and compared with the initial hash value
9
MOINC Server Manager 2/1/2009

10. MD5
d41d8cd98f00b204e0998ecf842
Client Side
Pre calculated benchmark hash
value in SMM
=
d41d8cd98f00b204e0998ecf842 d41d8cd98f00b204e0998ecf842
validation Server Side
10
MOINC Server Manager 2/1/2009

11. Credit Management
 Credit calculation
 RAC calculation
604,800 = seconds per week (60*60*7*24)
11
MOINC Server Manager 2/1/2009

12. User Management
 User roles
 Admin
 Agent
 Community user
 Authentication
 Agent Registration
 Agent validation
 Update agent information at the end of the
session
12
MOINC Server Manager 2/1/2009

13. User Manager ctd..
 User authorization
 Admin privileges
 Adding and deleting services from the repo
 Add and edit service properties
 Charts to view overall system performance and
status
 Agent privileges
 Edit profile
 View agent specific graphs
 Community user privileges
 General details of the MOINC network
13
MOINC Server Manager 2/1/2009

14. User Manager ctd..
 Searching for history activities
 Different filtering criterions
 By specific period
 By agent name
 By action
14
MOINC Server Manager 2/1/2009

15. Extending WSO2 Registry
 Adding user properties
 Adding new activities
 Adding community portal to the registry with
forums and other social networking features
 Adding charts and tables to view statistical
analysis of the MOINC system
15
MOINC Server Manager 2/1/2009

16. Future Enhancements
 RAC based clustering
 Benchmarking of agents
 Better than Linpack
 New weighting criterion for WS
(benchmarking of web services)
16
MOINC Server Manager 2/1/2009

17. Research Areas
 The Concepts of Grid Computing and
Distributed Computing
 The Volunteer Computing Model
 Web Service Grouping
 Benchmarking Web Services
 Load Balancing
 Customization of Web Service Repository -
WSO2 Registry
 LINPACK (100)
17
MOINC Server Manager 2/1/2009

18. Summary
 Introduction to MOINC – SMM
 Advanced Load Balancing algorithm
 Agent Benchmarking
 Benchmarking alto verification
 Credit Management
 User Management
 Extending WSO2 Registry
 Future work
18
MOINC Server Manager 2/1/2009

19. Questions
19
MOINC Server Manager 2/1/2009

20. High Performance & High Availability
Thank You!
2/1/2009
20