Help Center/ Relational Database Service/ Performance White Paper/ RDS for PostgreSQL/ RDS for PostgreSQL 11 Test Data/ Dedicated DB Instances
Updated on 2024-09-12 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

415.32

8,306.47

See About IOPS.

4

16

941.84

18,836.74

8

32

1,807.85

36,157.06

16

64

2,539.92

50,800.04

32

128

4,977.17

99,554.37
Table 2 vCPU:Memory = 1:8

vCPUs

Memory (GB)

TPS

QPS

IOPS

2

16

509.14

10,182.73

See About IOPS.

4

32

1,012.89

20,257.75

8

64

2,085.18

41,703.61

16

128

3,303.09

66,069.93

Test Results

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