Help Center/ Relational Database Service/ Performance White Paper/ RDS for PostgreSQL/ RDS for PostgreSQL 12 Test Data/ Dedicated DB Instances
Updated on 2022-09-22 GMT+08:00
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Dedicated 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 = 1:4

vCPUs

Memory (GB)

TPS

QPS

IOPS

2

8

458

9,168

See About IOPS.

4

16

978

19,560

8

32

1,850

36,992

16

64

2,555

51,101

32

128

5,508

110,167

64

256

10,510

210,245
Table 2 vCPU:Memory = 1:8

vCPUs

Memory (GB)

TPS

QPS

IOPS

2

16

533

10,667

See About IOPS.

4

32

998

19,956

8

64

2,061

41,216

16

128

3,907

78,142

64

512

10,526

210,567

Test Results

Figure 1 vCPU:Memory = 1:4
Figure 2 vCPU:Memory = 1:8