Help Center/ Relational Database Service_RDS for PostgreSQL/ Performance White Paper/ RDS for PostgreSQL 16 Test Data/ Dedicated DB Instances
Updated on 2026-09-17 GMT+08:00
View PDF
Share

Dedicated DB Instances

This section provides test data of RDS for PostgreSQL 16 x86-based dedicated instances using cloud SSDs.

Test Data

Table 1 vCPU:Memory = 1:2

vCPUs

Memory (GB)

TPS

QPS

IOPS

2

4

384.45

7,689.02

The input/output operations per second (IOPS) supported depends on the I/O performance of Elastic Volume Service (EVS) disks. For details, see Disk Types and Performance of Elastic Volume Service Service Overview.

4

8

927.94

18,558.67

8

16

1,590.73

31,814.54

16

32

1,827.76

36,555.23
Table 2 vCPU:Memory = 1:4

vCPUs

Memory (GB)

TPS

QPS

IOPS

2

8

459.85

9,196.93

The input/output operations per second (IOPS) supported depends on the I/O performance of Elastic Volume Service (EVS) disks. For details, see Disk Types and Performance of Elastic Volume Service Service Overview.

4

16

995.50

19,910.02

8

32

1,844.09

36,881.94

16

64

2,613.74

52,275.19
Table 3 vCPU:Memory = 1:8

vCPUs

Memory (GB)

TPS

QPS

IOPS

2

16

528.42

10,568.33

The input/output operations per second (IOPS) supported depends on the I/O performance of Elastic Volume Service (EVS) disks. For details, see Disk Types and Performance of Elastic Volume Service Service Overview.

4

32

1,090.38

21,807.52

8

64

1,852.31

37,046.40

16

128

4,108.89

82,178.03

Test Results

Figure 1 vCPU:Memory = 1:2
Figure 2 vCPU:Memory = 1:4
Figure 3 vCPU:Memory = 1:8
Parent Topic: RDS for PostgreSQL 16 Test Data