Help Center/ Relational Database Service/ Performance White Paper/ RDS for PostgreSQL/ RDS for PostgreSQL 14 Test Data/ General-Purpose DB Instances
Updated on 2025-03-19 GMT+08:00
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General-Purpose DB Instances

This section provides test data of RDS for PostgreSQL 14 x86-based general-purpose instances using cloud SSDs.

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

176.26

3,525.27

See About IOPS.

2

4

385.70

7,713.97

4

8

784.54

15,690.82

8

16

1,560.41

31,208.18
Table 2 vCPU:Memory = 1:4

vCPUs

Memory (GB)

TPS

QPS

IOPS

2

8

429.02

8,580.42

See About IOPS.

4

16

999.26

19,985.14

8

32

1,788.29

35,765.97

Test Results

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