Home > Storage > PowerFlex > White Papers > Dell APEX Block Storage for AWS: Oracle Database Deployment and Performance > OLTP workload test scenario and test results
Setting UPDATE_PCT to non-zero in the slob.conf file results in an OLTP workload which is a mix of database read and write operations. The OLTP workload test was conducted with a 75/25 read/write ratio with one Amazon EC2 instance running an Oracle single instance database and uses Amazon EBS volumes for storing Oracle database files, and gradually increasing the number of Amazon EC2 and Oracle database instances distributed across multiple availability zones.
Gradually increase the number of Oracle single instance databases and the number of concurrent users.
Each Oracle single instance database is built with 128 SLOB schemas, each with 8 GB dataset. The size of each schema is controlled by the scale parameter in the slob.conf file. The 128 schemas with 8 GB scale yield a total of 1 TB test data.
The test process includes the following steps:
The following table shows the results of the 75/25 OLTP workload test, where database read/write IOPS increased with the scaling of the Oracle single instance databases.
Table 5. Scaling of Oracle single instance databases resulting in IOPS increase
Metrics | 1 x Oracle database | 2 x Oracle databases | 3 x Oracle databases | 4 x Oracle databases |
Database write IO requests | 9,583 | 19,812 | 29,135 | 36,473 |
Database read IO requests | 38,818 | 79,943 | 117,418 | 147,520 |
Total database read/write IO requests | 48,401 | 99,755 | 146,553 | 183,993 |
DB file read latency (ms) | 1 | 0.98 | 0.99 | 1.1 |
Figure 14 shows PowerFlex performance metrics for OLTP workload for four Oracle single instance databases run simultaneously on Dell APEX Block Storage for AWS. The overall performance and latency metrics from the PowerFlex manager dashboard shows similar IOPS and read response time metrics to those shown in the Oracle AWR report.
Figure 14. PowerFlex manager showing OLTP workload metrics for Amazon EBS volumes
Figure 15 shows the database IOPS with the scaling of Amazon EC2 instances running Oracle single instance databases on PowerFlex storage, while the average database read response time remains under one millisecond. A total of 183,993 database read/write IOPS and an average database read latency of 1.1 milliseconds with the four databases using Dell APEX Block Storage for AWS when using Amazon EBS volumes.
Figure 15. Read/write (OLTP) scalability results using Amazon EBS volumes