# ENA 队列数
ENA 队列分配给网络接口，其默认静态限制取决于实例类型和大小。在受支持的实例类型上，您可以跨弹性网络接口（ENI）动态分配这些队列。虽然每个实例的队列总数取决于其类型和大小，但可以使用 ENA 队列配置多个 ENI，直到满足 ENI 和实例的最大队列数为止。
灵活分配 ENA 队列有助于优化资源分配，从而尽可能提高 vCPU 利用率。需要高网络性能的工作负载通常需要使用多个 ENA 队列。您可以根据特定的工作负载调整微调队列数，从而微调网络性能和每秒数据包数（PPS）。例如，网络密集型应用程序需要使用的队列数可能会多于 CPU 密集型应用程序。
**Topics**
+ [支持的实例](#supported-instances)
+ [修改队列数](#modify)
## 支持的实例
以下实例支持动态分配多个 ENA 队列。
### 通用型
| 实例类型 | 每个接口的默认 ENA 队列 | 每个接口的最大 ENA 队列数 | 每个实例的最大 ENA 队列数 |
| --- | --- | --- | --- |
| M6i |
| m6i.large | 2 | 2 | 6 |
| m6i.xlarge | 4 | 4 | 16 |
| m6i.2xlarge | 8 | 8 | 32 |
| m6i.4xlarge | 8 | 16 | 64 |
| m6i.8xlarge | 8 | 32 | 64 |
| m6i.12xlarge | 8 | 32 | 64 |
| m6i.16xlarge | 8 | 32 | 120 |
| m6i.24xlarge | 8 | 32 | 120 |
| m6i.32xlarge | 8 | 32 | 120 |
| M6id |
| m6id.large | 2 | 2 | 6 |
| m6id.xlarge | 4 | 4 | 16 |
| m6id.2xlarge | 8 | 8 | 32 |
| m6id.4xlarge | 8 | 16 | 64 |
| m6id.8xlarge | 8 | 32 | 64 |
| m6id.12xlarge | 8 | 32 | 64 |
| m6id.16xlarge | 8 | 32 | 120 |
| m6id.24xlarge | 8 | 32 | 120 |
| m6id.32xlarge | 8 | 32 | 120 |
| M6idn |
| m6idn.large | 2 | 2 | 6 |
| m6idn.xlarge | 4 | 4 | 16 |
| m6idn.2xlarge | 8 | 8 | 32 |
| m6idn.4xlarge | 8 | 16 | 64 |
| m6idn.8xlarge | 16 | 32 | 128 |
| m6idn.12xlarge | 16 | 32 | 128 |
| m6idn.16xlarge | 16 | 32 | 240 |
| m6idn.24xlarge | 32 | 32 | 480 |
| m6idn.32xlarge | 32 | 32 | 512 |
| M6in |
| m6in.large | 2 | 2 | 6 |
| m6in.xlarge | 4 | 4 | 16 |
| m6in.2xlarge | 8 | 8 | 32 |
| m6in.4xlarge | 8 | 16 | 64 |
| m6in.8xlarge | 16 | 32 | 128 |
| m6in.12xlarge | 16 | 32 | 128 |
| m6in.16xlarge | 16 | 32 | 240 |
| m6in.24xlarge | 32 | 32 | 480 |
| m6in.32xlarge | 32 | 32 | 512 |
| M8a |
| m8a.medium | 1 | 1 | 3 |
| m8a.large | 2 | 2 | 6 |
| m8a.xlarge | 4 | 4 | 16 |
| m8a.2xlarge | 8 | 8 | 32 |
| m8a.4xlarge | 8 | 16 | 64 |
| m8a.8xlarge | 8 | 32 | 128 |
| m8a.12xlarge | 16 | 64 | 192 |
| m8a.16xlarge | 16 | 64 | 256 |
| m8a.24xlarge | 16 | 128 | 384 |
| m8a.48xlarge | 32 | 128 | 768 |
| m8a.metal-24xl | 16 | 128 | 384 |
| m8a.metal-48xl | 32 | 128 | 768 |
| M8azn |
| m8azn.medium | 1 | 1 | 3 |
| m8azn.large | 2 | 2 | 8 |
| m8azn.xlarge | 4 | 4 | 16 |
| m8azn.3xlarge | 4 | 16 | 48 |
| m8azn.6xlarge | 8 | 32 | 96 |
| m8azn.12xlarge | 8 | 64 | 192 |
| m8azn.24xlarge | 16 | 128 | 384 |
| m8azn.metal-12xl | 8 | 64 | 192 |
| m8azn.metal-24xl | 16 | 128 | 384 |
| M8gb |
| m8gb.medium | 1 | 1 | 2 |
| m8gb.large | 2 | 2 | 6 |
| m8gb.xlarge | 4 | 4 | 16 |
| m8gb.2xlarge | 8 | 8 | 32 |
| m8gb.4xlarge | 8 | 16 | 64 |
| m8gb.8xlarge | 8 | 32 | 128 |
| m8gb.12xlarge | 16 | 64 | 192 |
| m8gb.16xlarge | 16 | 64 | 256 |
| m8gb.24xlarge | 16 | 128 | 384 |
| m8gb.48xlarge | 32 | 128 | 768 |
| m8gb.metal-24xl | 32 | 128 | 768 |
| m8gb.metal-48xl | 32 | 128 | 768 |
| M8gn |
| m8gn.medium | 1 | 1 | 2 |
| m8gn.large | 2 | 2 | 6 |
| m8gn.xlarge | 4 | 4 | 16 |
| m8gn.2xlarge | 8 | 8 | 32 |
| m8gn.4xlarge | 8 | 16 | 64 |
| m8gn.8xlarge | 8 | 32 | 128 |
| m8gn.12xlarge | 16 | 64 | 192 |
| m8gn.16xlarge | 16 | 64 | 256 |
| m8gn.24xlarge | 16 | 128 | 384 |
| m8gn.48xlarge | 32 | 128 | 768 |
| m8gn.metal-24xl | 32 | 128 | 768 |
| m8gn.metal-48xl | 32 | 128 | 768 |
| M8i |
| m8i.large | 2 | 2 | 6 |
| m8i.xlarge | 4 | 4 | 16 |
| m8i.2xlarge | 8 | 8 | 32 |
| m8i.4xlarge | 8 | 16 | 64 |
| m8i.8xlarge | 8 | 32 | 128 |
| m8i.12xlarge | 16 | 64 | 192 |
| m8i.16xlarge | 16 | 64 | 256 |
| m8i.24xlarge | 16 | 128 | 384 |
| m8i.32xlarge | 16 | 128 | 512 |
| m8i.48xlarge | 32 | 128 | 768 |
| m8i.96xlarge | 32 | 128 | 1536 |
| m8i.metal-48xl | 32 | 128 | 768 |
| m8i.metal-96xl | 32 | 128 | 1536 |
| M8id |
| m8id.large | 2 | 2 | 6 |
| m8id.xlarge | 4 | 4 | 16 |
| m8id.2xlarge | 8 | 8 | 32 |
| m8id.4xlarge | 8 | 16 | 64 |
| m8id.8xlarge | 8 | 32 | 128 |
| m8id.12xlarge | 16 | 64 | 192 |
| m8id.16xlarge | 16 | 64 | 256 |
| m8id.24xlarge | 16 | 128 | 384 |
| m8id.32xlarge | 16 | 128 | 512 |
| m8id.48xlarge | 32 | 128 | 768 |
| m8id.96xlarge | 32 | 128 | 1536 |
| m8id.metal-48xl | 32 | 128 | 768 |
| m8id.metal-96xl | 32 | 128 | 1536 |
| M8i-flex |
| m8i-flex.large | 1 | 1 | 3 |
| m8i-flex.xlarge | 2 | 2 | 8 |
| m8i-flex.2xlarge | 4 | 4 | 16 |
| m8i-flex.4xlarge | 4 | 8 | 32 |
| m8i-flex.8xlarge | 4 | 16 | 64 |
| m8i-flex.12xlarge | 8 | 32 | 96 |
| m8i-flex.16xlarge | 8 | 32 | 128 |
**注意**
\$1 这些实例类型配备多个网卡。其他实例类型配备单个网卡。有关更多信息，请参阅 [网卡](using-eni.md#network-cards)。
### 计算优化型
| 实例类型 | 每个接口的默认 ENA 队列 | 每个接口的最大 ENA 队列数 | 每个实例的最大 ENA 队列数 |
| --- | --- | --- | --- |
| C6i |
| c6i.large | 2 | 2 | 6 |
| c6i.xlarge | 4 | 4 | 16 |
| c6i.2xlarge | 8 | 8 | 32 |
| c6i.4xlarge | 8 | 16 | 64 |
| c6i.8xlarge | 8 | 32 | 64 |
| c6i.12xlarge | 8 | 32 | 64 |
| c6i.16xlarge | 8 | 32 | 120 |
| c6i.24xlarge | 8 | 32 | 120 |
| c6i.32xlarge | 8 | 32 | 120 |
| C6id |
| c6id.large | 2 | 2 | 6 |
| c6id.xlarge | 4 | 4 | 16 |
| c6id.2xlarge | 8 | 8 | 32 |
| c6id.4xlarge | 8 | 16 | 64 |
| c6id.8xlarge | 8 | 32 | 64 |
| c6id.12xlarge | 8 | 32 | 64 |
| c6id.16xlarge | 8 | 32 | 120 |
| c6id.24xlarge | 8 | 32 | 120 |
| c6id.32xlarge | 8 | 32 | 120 |
| C6in |
| c6in.large | 2 | 2 | 6 |
| c6in.xlarge | 4 | 4 | 16 |
| c6in.2xlarge | 8 | 8 | 32 |
| c6in.4xlarge | 8 | 16 | 64 |
| c6in.8xlarge | 16 | 32 | 128 |
| c6in.12xlarge | 16 | 32 | 128 |
| c6in.16xlarge | 16 | 32 | 240 |
| c6in.24xlarge | 32 | 32 | 480 |
| c6in.32xlarge | 32 | 32 | 512 |
| C8a |
| c8a.medium | 1 | 1 | 3 |
| c8a.large | 2 | 2 | 6 |
| c8a.xlarge | 4 | 4 | 16 |
| c8a.2xlarge | 8 | 8 | 32 |
| c8a.4xlarge | 8 | 16 | 64 |
| c8a.8xlarge | 8 | 32 | 128 |
| c8a.12xlarge | 16 | 64 | 192 |
| c8a.16xlarge | 16 | 64 | 256 |
| c8a.24xlarge | 16 | 128 | 384 |
| c8a.48xlarge | 32 | 128 | 768 |
| c8a.metal-24xl | 16 | 128 | 384 |
| c8a.metal-48xl | 32 | 128 | 768 |
| C8gb |
| c8gb.medium | 1 | 1 | 2 |
| c8gb.large | 2 | 2 | 6 |
| c8gb.xlarge | 4 | 4 | 16 |
| c8gb.2xlarge | 8 | 8 | 32 |
| c8gb.4xlarge | 8 | 16 | 64 |
| c8gb.8xlarge | 8 | 32 | 128 |
| c8gb.12xlarge | 16 | 64 | 192 |
| c8gb.16xlarge | 16 | 64 | 256 |
| c8gb.24xlarge | 16 | 128 | 384 |
| c8gb.48xlarge | 32 | 128 | 768 |
| c8gb.metal-24xl | 32 | 128 | 768 |
| c8gb.metal-48xl | 32 | 128 | 768 |
| C8gn |
| c8gn.medium | 1 | 1 | 2 |
| c8gn.large | 2 | 2 | 6 |
| c8gn.xlarge | 4 | 4 | 16 |
| c8gn.2xlarge | 8 | 8 | 32 |
| c8gn.4xlarge | 8 | 16 | 64 |
| c8gn.8xlarge | 8 | 32 | 128 |
| c8gn.12xlarge | 16 | 64 | 192 |
| c8gn.16xlarge | 16 | 64 | 256 |
| c8gn.24xlarge | 16 | 128 | 384 |
| c8gn.48xlarge | 32 | 128 | 768 |
| c8gn.metal-24xl | 32 | 128 | 768 |
| c8gn.metal-48xl | 32 | 128 | 768 |
| c8i |
| c8i.large | 2 | 2 | 6 |
| c8i.xlarge | 4 | 4 | 16 |
| c8i.2xlarge | 8 | 8 | 32 |
| c8i.4xlarge | 8 | 16 | 64 |
| c8i.8xlarge | 8 | 32 | 128 |
| c8i.12xlarge | 16 | 64 | 192 |
| c8i.16xlarge | 16 | 64 | 256 |
| c8i.24xlarge | 16 | 128 | 384 |
| c8i.32xlarge | 16 | 128 | 512 |
| c8i.48xlarge | 32 | 128 | 768 |
| c8i.96xlarge | 32 | 128 | 1536 |
| c8i.metal-48xl | 32 | 128 | 768 |
| c8i.metal-96xl | 32 | 128 | 1536 |
| C8id |
| c8id.large | 2 | 2 | 6 |
| c8id.xlarge | 4 | 4 | 16 |
| c8id.2xlarge | 8 | 8 | 32 |
| c8id.4xlarge | 8 | 16 | 64 |
| c8id.8xlarge | 8 | 32 | 128 |
| c8id.12xlarge | 16 | 64 | 192 |
| c8id.16xlarge | 16 | 64 | 256 |
| c8id.24xlarge | 16 | 128 | 384 |
| c8id.32xlarge | 16 | 128 | 512 |
| c8id.48xlarge | 32 | 128 | 768 |
| c8id.96xlarge | 32 | 128 | 1536 |
| c8id.metal-48xl | 32 | 128 | 768 |
| c8id.metal-96xl | 32 | 128 | 1536 |
| C8i-flex |
| c8i-flex.large | 1 | 1 | 3 |
| c8i-flex.xlarge | 2 | 2 | 8 |
| c8i-flex.2xlarge | 4 | 4 | 16 |
| c8i-flex.4xlarge | 4 | 8 | 32 |
| c8i-flex.8xlarge | 4 | 16 | 64 |
| c8i-flex.12xlarge | 8 | 32 | 96 |
| c8i-flex.16xlarge | 8 | 32 | 128 |
**注意**
\$1 这些实例类型配备多个网卡。其他实例类型配备单个网卡。有关更多信息，请参阅 [网卡](using-eni.md#network-cards)。
### 内存优化型
| 实例类型 | 每个接口的默认 ENA 队列 | 每个接口的最大 ENA 队列数 | 每个实例的最大 ENA 队列数 |
| --- | --- | --- | --- |
| R6i |
| r6i.large | 2 | 2 | 6 |
| r6i.xlarge | 4 | 4 | 16 |
| r6i.2xlarge | 8 | 8 | 32 |
| r6i.4xlarge | 8 | 16 | 64 |
| r6i.8xlarge | 8 | 32 | 64 |
| r6i.12xlarge | 8 | 32 | 64 |
| r6i.16xlarge | 8 | 32 | 120 |
| r6i.24xlarge | 8 | 32 | 120 |
| r6i.32xlarge | 8 | 32 | 120 |
| R6id |
| r6id.large | 2 | 2 | 6 |
| r6id.xlarge | 4 | 4 | 16 |
| r6id.2xlarge | 8 | 8 | 32 |
| r6id.4xlarge | 8 | 16 | 64 |
| r6id.8xlarge | 8 | 32 | 64 |
| r6id.12xlarge | 8 | 32 | 64 |
| r6id.16xlarge | 8 | 32 | 120 |
| r6id.24xlarge | 8 | 32 | 120 |
| r6id.32xlarge | 8 | 32 | 120 |
| R6idn |
| r6idn.large | 2 | 2 | 6 |
| r6idn.xlarge | 4 | 4 | 16 |
| r6idn.2xlarge | 8 | 8 | 32 |
| r6idn.4xlarge | 8 | 16 | 64 |
| r6idn.8xlarge | 16 | 32 | 128 |
| r6idn.12xlarge | 16 | 32 | 128 |
| r6idn.16xlarge | 16 | 32 | 240 |
| r6idn.24xlarge | 32 | 32 | 480 |
| r6idn.32xlarge | 32 | 32 | 512 |
| R6in |
| r6in.large | 2 | 2 | 6 |
| r6in.xlarge | 4 | 4 | 16 |
| r6in.2xlarge | 8 | 8 | 32 |
| r6in.4xlarge | 8 | 16 | 64 |
| r6in.8xlarge | 16 | 32 | 128 |
| r6in.12xlarge | 16 | 32 | 128 |
| r6in.16xlarge | 16 | 32 | 240 |
| r6in.24xlarge | 32 | 32 | 480 |
| r6in.32xlarge | 32 | 32 | 512 |
| R8a |
| r8a.medium | 1 | 1 | 3 |
| r8a.large | 2 | 2 | 6 |
| r8a.xlarge | 4 | 4 | 16 |
| r8a.2xlarge | 8 | 8 | 32 |
| r8a.4xlarge | 8 | 16 | 64 |
| r8a.8xlarge | 8 | 32 | 128 |
| r8a.12xlarge | 16 | 64 | 192 |
| r8a.16xlarge | 16 | 64 | 256 |
| r8a.24xlarge | 16 | 128 | 384 |
| r8a.48xlarge | 32 | 128 | 768 |
| r8a.metal-24xl | 16 | 128 | 384 |
| r8a.metal-48xl | 32 | 128 | 768 |
| R8gb |
| r8gb.medium | 1 | 1 | 2 |
| r8gb.large | 2 | 2 | 6 |
| r8gb.xlarge | 4 | 4 | 16 |
| r8gb.2xlarge | 8 | 8 | 32 |
| r8gb.4xlarge | 8 | 16 | 64 |
| r8gb.8xlarge | 8 | 32 | 128 |
| r8gb.12xlarge | 16 | 64 | 192 |
| r8gb.16xlarge | 16 | 64 | 256 |
| r8gb.24xlarge | 16 | 128 | 384 |
| r8gb.48xlarge | 32 | 128 | 768 |
| r8gb.metal-24xl | 32 | 128 | 768 |
| r8gb.metal-48xl | 32 | 128 | 768 |
| R8gn |
| r8gn.medium | 1 | 1 | 2 |
| r8gn.large | 2 | 2 | 6 |
| r8gn.xlarge | 4 | 4 | 16 |
| r8gn.2xlarge | 8 | 8 | 32 |
| r8gn.4xlarge | 8 | 16 | 64 |
| r8gn.8xlarge | 8 | 32 | 128 |
| r8gn.12xlarge | 16 | 64 | 192 |
| r8gn.16xlarge | 16 | 64 | 256 |
| r8gn.24xlarge | 16 | 128 | 384 |
| r8gn.48xlarge | 32 | 128 | 768 |
| r8gn.metal-24xl | 32 | 128 | 768 |
| r8gn.metal-48xl | 32 | 128 | 768 |
| R8i |
| r8i.large | 2 | 2 | 6 |
| r8i.xlarge | 4 | 4 | 16 |
| r8i.2xlarge | 8 | 8 | 32 |
| r8i.4xlarge | 8 | 16 | 64 |
| r8i.8xlarge | 8 | 32 | 128 |
| r8i.12xlarge | 16 | 64 | 192 |
| r8i.16xlarge | 16 | 64 | 256 |
| r8i.24xlarge | 16 | 128 | 384 |
| r8i.32xlarge | 16 | 128 | 512 |
| r8i.48xlarge | 32 | 128 | 768 |
| r8i.96xlarge | 32 | 128 | 1536 |
| r8i.metal-48xl | 32 | 128 | 768 |
| r8i.metal-96xl | 32 | 128 | 1536 |
| R8id |
| r8id.large | 2 | 2 | 6 |
| r8id.xlarge | 4 | 4 | 16 |
| r8id.2xlarge | 8 | 8 | 32 |
| r8id.4xlarge | 8 | 16 | 64 |
| r8id.8xlarge | 8 | 32 | 128 |
| r8id.12xlarge | 16 | 64 | 192 |
| r8id.16xlarge | 16 | 64 | 256 |
| r8id.24xlarge | 16 | 128 | 384 |
| r8id.32xlarge | 16 | 128 | 512 |
| r8id.48xlarge | 32 | 128 | 768 |
| r8id.96xlarge | 32 | 128 | 1536 |
| r8id.metal-48xl | 32 | 128 | 768 |
| r8id.metal-96xl | 32 | 128 | 1536 |
| r8i-flex |
| r8i-flex.large | 1 | 1 | 3 |
| r8i-flex.xlarge | 2 | 2 | 8 |
| r8i-flex.2xlarge | 4 | 4 | 16 |
| r8i-flex.4xlarge | 4 | 8 | 32 |
| r8i-flex.8xlarge | 4 | 16 | 64 |
| r8i-flex.12xlarge | 8 | 32 | 96 |
| r8i-flex.16xlarge | 8 | 32 | 128 |
| X8aedz |
| x8aedz.large | 2 | 2 | 8 |
| x8aedz.xlarge | 4 | 4 | 16 |
| x8aedz.3xlarge | 4 | 16 | 48 |
| x8aedz.6xlarge | 8 | 32 | 96 |
| x8aedz.12xlarge | 8 | 64 | 192 |
| x8aedz.24xlarge | 16 | 128 | 384 |
| x8aedz.metal-12xl | 8 | 64 | 192 |
| x8aedz.metal-24xl | 16 | 128 | 384 |
| X8i |
| x8i.large | 2 | 2 | 6 |
| x8i.xlarge | 4 | 4 | 16 |
| x8i.2xlarge | 8 | 8 | 32 |
| x8i.4xlarge | 8 | 16 | 64 |
| x8i.8xlarge | 8 | 32 | 128 |
| x8i.12xlarge | 16 | 64 | 192 |
| x8i.16xlarge | 16 | 64 | 256 |
| x8i.24xlarge | 16 | 128 | 384 |
| x8i.32xlarge | 16 | 128 | 512 |
| x8i.48xlarge | 32 | 128 | 768 |
| x8i.64xlarge | 32 | 128 | 1024 |
| x8i.96xlarge | 32 | 128 | 1536 |
| x8i.metal-48xl | 32 | 128 | 768 |
| x8i.metal-96xl | 32 | 128 | 1536 |
**注意**
\$1 这些实例类型配备多个网卡。其他实例类型配备单个网卡。有关更多信息，请参阅 [网卡](using-eni.md#network-cards)。
## 修改队列数
您可以使用 AWS 管理控制台或 AWS CLI 修改 ENA 队列数。在 AWS 管理控制台中，ENA 队列配置位于每个**网络接口**的设置下。
要使用 AWS CLI 修改 ENA 队列数，请使用以下任一命令。在修改队列数之前，请使用以下命令检查您当前的队列数。
```
aws ec2 describe-instances --instance-id i-1234567890abcdef0
```
**注意**
必须停止实例后才能修改 ENA 队列数。
ENA 队列的值必须是 2 的乘方，例如 1、2、4、8、16、32 等。
分配给任何单个 ENI 的队列数不能超过实例上可用的 vCPU 数。
`[attach-network-interface](https://docs.aws.amazon.com/cli/latest/reference/ec2/attach-network-interface.html)`
以下示例在一个 ENI 上配置了 32 个 ENA 队列。
```
aws ec2 attach-network-interface \
--network-interface-id eni-001aa1bb223cdd4e4 \
--instance-id i-1234567890abcdef0 \
--device-index 1 \
--ena-queue-count 32
```
`[run-instances](https://docs.aws.amazon.com/cli/latest/reference/ec2/run-instances.html)`
以下示例有 3 个 ENI，每个均配置了 2 个 ENA 队列。
```
aws ec2 run-instances \
--image-id ami-12ab3c30 \
--instance-type c6i.large \
--min-count 1 \
--max-count 1 \
--network-interfaces \
"[{\"DeviceIndex\":0,\"SubnetId\":\"subnet-123456789012a345a\",\"EnaQueueCount\":2},
{\"DeviceIndex\":1,\"SubnetId\":\"subnet-123456789012a345a\",\"EnaQueueCount\":2},
{\"DeviceIndex\":2,\"SubnetId\":\"subnet-123456789012a345a\",\"EnaQueueCount\":2}]"
```
`[modify-network-interface-attribute](https://docs.aws.amazon.com/cli/latest/reference/ec2/modify-network-interface-attribute.html)`
以下示例在一个 ENI 上配置了 32 个 ENA 队列。
```
aws ec2 modify-network-interface-attribute \
--network-interface-id eni-1234567890abcdef0 \
--attachment AttachmentId=eni-attach-12345678,EnaQueueCount=32
```
以下示例将 ENA 数重置为默认值。
```
aws ec2 modify-network-interface-attribute \
--network-interface-id eni-1234567890abcdef0 \
--attachment AttachmentId=eni-attach-12345678,DefaultEnaQueueCount=true
```