Instance Specifications

FlexusX supports the performance mode. The performance mode can provide the ultimate, stable performance assurance at additional costs. The instance specifications vary depending on whether performance mode is enabled. For more information, see Enabling Performance Mode for a FlexusX Instance.

FlexusX Compute Resources

FlexusX instances use the x86 architecture. The following table lists the compute resources when performance mode is enabled and disabled.

Compute Resource in Disabled Performance Mode	Compute Resource in Enabled Performance Mode
vCPU/Memory ratio: flexible custom ratios to meet your specific needs with low-cost resources vCPU/Memory range: 1 to 16 vCPUs and 1 GiB to 128 GiB of memory Processor: 3rd Generation Intel® Xeon® Scalable Processor Basic/Turbo frequency: 2.8 GHz/3.5 GHz	vCPU/Memory ratio: flexible custom ratios to meet your specific needs with low-cost resources vCPU/Memory range: 2 to 32 vCPUs and 2 to 256 GiB of memory Basic/Turbo frequency: 2.45 GHz/3.5 GHz

The vCPU and memory specifications of FlexusX instances vary slightly in different regions. For details, see the specifications displayed on the console.

Specifications Details

Table 1 and Table 2 list the specifications of FlexusX instances with performance mode disabled or enabled.

**Table 1** QoS specifications with performance mode disabled
vCPU	Assured/Max. Intranet Bandwidth (Gbit/s)	Max. Intranet PPS (10,000)	Max. NIC Queues	Max. NICs	Max. Supplementary NICs	Virtualization
2	0.2/2	30	2	2	8	KVM
4	0.4/3	50	2	2	16	KVM
6	0.6/4	60	2	2	24	KVM
8	0.8/6	80	2	2	32	KVM
12	1.2/8	90	4	3	48	KVM
16	1.6/12	100	4	3	64	KVM

**Table 2** Specifications with performance mode enabled
vCPU	Assured/Max. Intranet Bandwidth (Gbit/s)	Max. Intranet PPS (10,000)	Max. NIC Queues	Max. NICs	Max. Supplementary NICs	Virtualization
2	1/2	40	2	2	16	KVM
4	1.5/3	60	2	3	32	KVM
8	2.5/6	100	4	4	64	KVM
12	4/8	150	4	6	96	KVM
16	5/12	200	8	8	128	KVM
20	5/13	220	8	8	128	KVM
24	6/14	250	8	8	192	KVM
28	6/15	280	8	8	192	KVM
32	8/16	300	16	8	256	KVM

The intranet bandwidth and PPS of a FlexusX instance are determined by the instance specifications.

Assured intranet bandwidth: the guaranteed bandwidth allocated to a FlexusX instance when there is a network bandwidth contention in the entire network
Maximum intranet bandwidth: the maximum bandwidth that can be allocated to a FlexusX instance when the instance does not compete for network bandwidth (other instances on the host do not have high requirements for network bandwidth)
Maximum intranet PPS: the maximum capability of FlexusX instances in sending and receiving packets. PPS stands for Packets per Second, indicating the number of packets sent per second. It is usually used to measure the network performance.
Maximum NIC queues: allocates NIC interrupt requests to multiple vCPUs for higher PPS performance and bandwidth. For instructions about how to enable NIC multi-queue, see Enabling NIC Multi-Queue.
Maximum NICs: the maximum number of NICs that can be attached to a FlexusX instance. An NIC is an elastic network interface. For details, see Elastic Network Interface.
Maximum supplementary NICs: the maximum number of supplementary NICs that can be attached to a FlexusX instance. A supplementary NIC is a supplement to NICs. If the number of NICs that can be attached to your instance cannot meet your requirements, you can use supplementary NICs. For details, see Supplementary Network Interface.