QoS for Enterprise Applications

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Antony Douglas
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1 QoS for Enterprise Applications Paul Tunney WhiteView QoS Taskforce: Paris April 2002

2 Current Topology Oracle DB2 UDB Sybase

3 What s in the box CORBA EJB JMS.NET

4 J2EE Application Server Architecture

5 CORBA Architecture Transaction Naming Notification PSS LifeCycle Concurrency

6 Where s the applications process

7 Solaris Resource Manager

8 QoS Characteristics Timeliness (e.g. request/response time) Capacity (e.g. throughput) Accuracy (e.g. error probability) Security (e.g. access control, integrity, auth) Precedence (e.g. priority)

9 Deployment Descriptors could be the way <enterprise-beans> <entity> <description>inventory CMP EJB</description> <display-name>inventoryeb</display-name> <ejb-name>inventoryejb</ejb-name> <local-home>com.sun.j2ee.blueprints.supplier.inventory.ejb.inventorylocalhome</local-home> <local>com.sun.j2ee.blueprints.supplier.inventory.ejb.inventorylocal</local> <ejb-class>com.sun.j2ee.blueprints.supplier.inventory.ejb.inventoryejb</ejb-class> <persistence-type>container</persistence-type> <prim-key-class>java.lang.string</prim-key-class> <reentrant>false</reentrant> <cmp-version>2.x</cmp-version> <abstract-schema-name>inventory</abstract-schema-name> <cmp-field> <field-name>itemid</field-name> </cmp-field> <cmp-field> <field-name>quantity</field-name> </cmp-field> <primkey-field>itemid</primkey-field> <security-identity> <description></description> <use-caller-identity></use-caller-identity> </security-identity> <query> <description>ejbql to find all Inventory Items</description> <query-method> <method-name>findallinventoryitems</method-name>  <method-params /> </query-method> <ejb-ql>select OBJECT(a) From Inventory a</ejb-ql> </query> </entity> </enterprise>

10 QML - Quality Meta Language from Hewlett Parkard Labs type Reliability = contract { numberoffailures : decreasing numeric no / year; TTR : decreasing numeric sec; availability : increasing numeric; }; type Performance = contract { delay : decreasing numeric msec; throughput : increasing numeric mb / sec; }; Reference: Svend Frølund, Jari Kois tinen, Software Technology Laboratory, HPL-98-10, February 1998 systemreliability = Reliability contract { numberoffailures < 10 no / year; TTR { percentile 100 < 2000; mean < 500; variance < 0.3; }; availability > 0.8; };

11 The How of Active Service Level Management Service Level Management Actively manages system Availability Performance Agreement Service Level Agreement Business Agreement Drives System Service Level Reporter Reports back to business Standards based Active Service Level Management High Availability, Applications focus

12 Whitebox Product Marketecture 1.0 Whitebox Enterprise Service Level Management Infrastructure Service Level Policy Manager (*) SLO Repository (*) Shadow Transaction Management IIOP Sniffer (*) RMI Sniffer (*) SOAP Sniffer (*) JMX Agents SLA Business Console (*) Application Group Mgt (*) Whitebox Standard FDN & System Mgt Host Agents CORBA Fault Detection Client Reporting SNMP Adapter Mgt GUI JMX Monitoring Server Fault Detection & Notification (FDN) J2EE Fault Detection (*) Fault Notification Channel Object Group Mgt Server Application Server Application Server Application Server Application Whitebox Professional Fault Tolerant Infrastructure Replication Manager Property Mgt Generic Factory Server Application Server Application State Mgt Middleware Infrastructure Logging & Recovery Message Capture & Replay Startup & Shutdown Client Applications FDN Monitored Client SLA Managed Client FT Managed Client JMX Agents Active Replication Passive (*) Replication RTOM Replication Infrastructure Duplicate Supression Gateway Standard Component Professional Component Hardware Infrastructure Database Infrastructure Network Infrastructure Security Infrastructure Enterprise Component (*) = Future Component Middleware / Environment Component Arch Ver 0.7

13 My little daemon Host 1 BoM Host 2 Billing SLA history GL browser SLM daemon speed Avail. Host 3 Host 4 Payroll browser SLA Editor JMS Sales EJB Managed domain CORBA

14 Globus Resource Allocation Manager From globus.org

15 Globus Resource Broker

16 Where we need standards Portable SLAs a single SLA for a service should be understood by all components in the chain Portable Metrics need to compare apples with apples this may be by component type Agreed interfaces each component should be able to request SLA performance information from another

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