1. SPECjAppServer2004
Scott Oaks
Java Enterprise Performance

2. Agenda Sun Java Systems Application Server is new performance leader
Overview of the benchmark and the parts of the appserver it affects

3. SPECjAppServer 2004 Standard SPEC benchmark for appservers
Also includes database and other external resources
Much more of a system benchmark
SJSAS 9.1 best score on T2000
JDK 6.0 Update 2
DB2 Database
Will be revved in late 2007
Include WebServices
JPA replace Entity EJB

4. What it measures Several types of transactions Inject a load
1 IR == 13 users
2 – 5 second think time per transactions
Measures 90% response time
The transactions/sec essentially fixed per IR
Pick an IR, run, see if you pass
Then pick a new IR

5. SPECjAppServer Deployments
Client 1
Appserver 1
Database
...
...
Client N
Cliet N
Appserver N
Emulator
(WebServer)

6. Minimum Hardware Requirements
One Appserver Machine
One Machine for Database, Clients, Emulator
Requires fast disk with battery cache
Must have at least as much CPU as appserver
1GB link between machines
Not via SWAN

7. Minimum Software Requirements
Application Server (SJSAS 9.1)
JVM
Commercial (fast) database
Oracle 10G, DB2 9.1
Tomcat
SPECjAppServer code
Part of refworkload

8. Key Transactions: MFG Driver makes ORB call into SLSB Create WorkOrder
SLSB creates CMP based on data retrived from about 12 other CMP
for i = 0 to 3 do updateWorkOrder; sleep 333
SLSB updates CMP
Complete WorkOrder
SLSB updates 2-5 CMP beans

9. Key Transactions: Browse
for i = 1 to 10
Driver makes HTTP call to servlet
Servlet locates 20 cached CMP beans
Refreshed every 1200 seconds
Data forwarded to JSP for display

10. Key Transactions: Purchase
4-5 servlet calls to add/clear items from SFSB
1-2 browse calls
Servlet call to purchase
Update CMP beans
Create JMS messages

11. AppServer Configuration
Thread Pools
HTTP: 65 on T2000
ORB: 45 on T2000
JMS: 40 on T2000
JDBC Pools: 200 connections
Heap: 2560M

12. Things we don't always think about
Synchronization points
Will need to run on 64-CPU Niagara machines in 9.1_01 GC
Invocation Object is 128 bytes
20-60 per operation
It's only one short/little method
Called times per operation

13. Q&A Q? A!

14. TEMPLATE – ENDING SLIDE WITHOUT PHOTO
Presenter’s Name