Help Center> Relational Database Service> Performance White Paper> RDS for PostgreSQL> RDS for PostgreSQL 12 Test Data> General-Purpose DB Instances
Updated on 2022-10-31 GMT+08:00
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General-Purpose DB Instances

About IOPS

The IOPS supported by RDS for PostgreSQL depends on the I/O performance of Elastic Volume Service (EVS) disks. For details, see Disk Types and Performance in the Elastic Volume Service Service Overview.

Test Data

Table 1 vCPU:Memory = 1:2

vCPUs

Memory (GB)

TPS

QPS

IOPS

1

2

172

3,441

See About IOPS.

2

4

404

8,088

4

8

894

17,887

8

16

1,592

31,832
Table 2 vCPU:Memory = 1:4

vCPUs

Memory (GB)

TPS

QPS

IOPS

2

8

419

8,378

See About IOPS.

4

16

961

19,227

8

32

1,862

37,237

Test Results

Figure 1 vCPU:Memory = 1:2
Figure 2 vCPU:Memory = 1:4