Help Center/ Relational Database Service/ Performance White Paper/ RDS for PostgreSQL/ RDS for PostgreSQL 13 Test Data/ General-Purpose DB Instances
Updated on 2025-03-19 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

178.71

3,574.29

See About IOPS.

2

4

372.52

7,450.35

4

8

848.15

16,963.08

8

16

1,505.10

30,101.94
Table 2 vCPU:Memory = 1:4

vCPUs

Memory (GB)

TPS

QPS

IOPS

2

8

425.26

8,505.16

See About IOPS.

4

16

879.52

17,590.53

8

32

1,764.29

35,285.91

Test Results

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