Dedicated DB Instances

This section provides test data of RDS for PostgreSQL 15 x86-based dedicated 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
2	4	378.99	7,579.83	See About IOPS.
4	8	838.37	16,767.38
8	16	1,577.04	31,540.74
16	32	1,850.72	37,014.46

**Table 2** vCPU:Memory = 1:4
vCPUs	Memory (GB)	TPS	QPS	IOPS
2	8	465.93	9,318.54	See About IOPS.
4	16	994.98	19,899.65
8	32	1,825.27	36,505.56
16	64	2,582.68	51,653.81

**Table 3** vCPU:Memory = 1:8
vCPUs	Memory (GB)	TPS	QPS	IOPS
2	16	495.95	9,919.00	See About IOPS.
4	32	1,096.84	21,936.72
8	64	1,924.42	38,488.57
16	128	3,943.78	78,875.96

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 15 Test Data

Previous topic: General-Purpose DB Instances

Next topic: RDS for SQL Server

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