Dedicated DB Instances

Updated on 2022-09-22 GMT+08:00

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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	458	9,168	See About IOPS.
4	16	978	19,560
8	32	1,850	36,992
16	64	2,555	51,101
32	128	5,508	110,167
64	256	10,510	210,245

**Table 2** vCPU:Memory = 1:8
vCPUs	Memory (GB)	TPS	QPS	IOPS
2	16	533	10,667	See About IOPS.
4	32	998	19,956
8	64	2,061	41,216
16	128	3,907	78,142
64	512	10,526	210,567

Test Results

Figure 1 vCPU:Memory = 1:4

Figure 2 vCPU:Memory = 1:8

Parent topic: RDS for PostgreSQL 12 Test Data

Previous topic: General-Purpose DB Instances

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