HammerDB DB2 Quick Start

Transcription

1 HammerDB DB2 Quick Start This quick start tutorial gets you up and running with the essentials of load testing and benchmarking for the IBM DB2 Database. Install DB2 Server... 1 Optional: Install DB2 Client Software for Networked Access... 3 Install HammerDB... 4 Build a DB2 Test Schema... 5 Run a DB2 Load Test... 8 Support and Questions Install DB2 Server IBM provide DB2 in a virtual appliance format with a pre-configured DB2 test database in a Linux operating system. This provides the most rapid way to install and configure DB2 and the recommended virtual environment for DB2 VM testing is Oracle VirtualBox. Figure 1 Oracle VirtualBox Alternatively IBM also offer DB2 Express-C as a freely available version of DB2 that can be run in the 32 or 64-bit Windows and Linux environments that HammerDB supports. 1

2 Figure 2 DB2 Running Start DB2 and create a database with the name of your choosing, in this example tpcc is used. 2

3 Figure 3 DB2 Database Created Optional: Install DB2 Client Software for Networked Access Alternatively if you already have a DB2 database running and you wish to connect across a network HammerDB only requires the IBM Data Server Driver for ODBC and CLI. Note that HammerDB connects to DB2 via CLI as the db2tcl interface is C based interface enabling CLI connectivity. ODBC is not used for HammerDB connectivity to DB2. Figure 5 Data Server Driver Configure your db2dsdriver.cfg file with the hostname, port and database that you have created on the server. db2inst1:~/odbc_cli/clidriver/cfg> more db2dsdriver.cfg <?xml version="1.0" encoding="utf-8" standalone="no"?> <configuration> <dsncollection> <dsn alias="tpcc" host="db2v1032bit" name="tpcc" port="50001"/> </dsncollection> 3

4 <databases> <database host="db2v1032bit" name="tpcc" port="50001"/> </databases> </configuration> Install HammerDB To install HammerDB follow the HammerDB installation guide. Before proceeding you should have your DB2 database software installed and running. Firstly you will need to select which benchmark and database you wish to use by choosing select benchmark from under the TPC menu. The initial settings are determined by the values in your config.xml file. Select DB2 and TPC- C and press OK as shown in Figure 6. Figure 6 Select Benchmark You are now ready to begin building a schema as shown in Figure 7. 4

5 Figure 7 TPC-C Schema Options Build a DB2 Test Schema Click on the Benchmark tree view and under TPC-C select TPC-C Schema options to display the TPC-C Schema options window as shown in Figure 8. Within this window enter the details for DB2 connectivity. The specified database will be created during installation. Select a number of warehouses with the slider, 5 is good for a first test under a VM and set the Virtual Users to build schema to the number of virtual CPU cores on your guest system. Click OK. 5

6 Figure 8 Build Options Double-click on the Build option as shown in Figure 9. Figure 9 Build Option 6

7 On the Create Schema prompt check the details and Click Yes. Figure 10 Confirm Schema Wait for the Schema creation to complete, the time to completion depends on your system but should normally be less than 10 minutes. Figure 11 Schema Building 7

8 Figure 12 Schema Build Complete When the Display shows TPCC SCHEMA COMPLETE and all users have completed successfully the build is finished. Press the red traffic light icon to close the users down. Run a DB2 Load Test You can now proceed to run a load test against your created schema. Under the benchmark tree view select Driver Script and options. The choices to select for the driver script are displayed. Note that the database name and usernames if changed for the build options will also be reflected here. Accept the default values and click OK. 8

9 Figure 14 Driver Options Now select the Driver Script option and double-click on Load as shown in Figure 15, this populates the Script Editor window with the driver script. You can observe that the EDITABLE OPTIONS correspond to the driver script options set in the previous step. You do not need to edit the script. 9

10 Figure 15 TPC-C Driver Script Under the Virtual User view double-click on Options and enter the number of users you wish to run against your system. Don t select too many to start with as the workload is intensive. If you wish check the Show Output button to see what your users are doing whilst the test is running, however note that displaying the output will reduce the overall level of performance and click OK. Figure 16 Select Virtual Users Double-click on Create Virtual Users as shown in Figure 17 to create the virtual users, they will not start 10

11 running yet. Figure 17 Create Virtual Users You can observe that the virtual users have been created but their status is shown as waiting. Now click the Run Virtual Users button as shown in Figure 18 to start the test. The virtual users will begin to execute the driver script in the Script Editor Window. 11

12 Figure 18 Virtual Users Created and Run You can now observe that the load test is in progress as the virtual users display their output. 12

13 Figure 19 Load Testing Running By clicking on the pencil icon shown in Figure 19 you can observe the transaction rate reported by DB2. Figure 20 Transaction Counter 13

14 Also observe with HammerDB Metrics that a load has been placed on the system. Figure 21 HammerDB Metrics The load will complete when all virtual users have completed the number of transactions you defined or can be stopped by pressing the red traffic light icon as shown in Figure 22 to destroy the virtual users. Figure 22 Virtual Users Complete 14

15 HammerDB users of other databases should note that at the present time DB2 does not make Transaction Counter statistics queryable and therefore a transaction counter is not available. Performance statistics are available as NOPM by running a timed test. For next steps such as running timed and automated tests follow the Introduction to Transactional (OLTP) Load Testing for all Databases. Support and Questions For help use the HammerDB Sourceforge forum available at the HammerDB sourceforge project 15