This is the new *CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [AWS CloudFormation User Guide](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::GreengrassV2::Deployment SystemResourceLimits
<a name="aws-properties-greengrassv2-deployment-systemresourcelimits"></a>

Contains information about system resource limits that the software applies to a component's processes.

## Syntax
<a name="aws-properties-greengrassv2-deployment-systemresourcelimits-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-greengrassv2-deployment-systemresourcelimits-syntax.json"></a>

```
{
  "[Cpus](#cfn-greengrassv2-deployment-systemresourcelimits-cpus)" : Number,
  "[Memory](#cfn-greengrassv2-deployment-systemresourcelimits-memory)" : Integer
}
```

### YAML
<a name="aws-properties-greengrassv2-deployment-systemresourcelimits-syntax.yaml"></a>

```
  [Cpus](#cfn-greengrassv2-deployment-systemresourcelimits-cpus): Number
  [Memory](#cfn-greengrassv2-deployment-systemresourcelimits-memory): Integer
```

## Properties
<a name="aws-properties-greengrassv2-deployment-systemresourcelimits-properties"></a>

`Cpus`  <a name="cfn-greengrassv2-deployment-systemresourcelimits-cpus"></a>
The maximum amount of CPU time that a component's processes can use on the core device. A core device's total CPU time is equivalent to the device's number of CPU cores. For example, on a core device with 4 CPU cores, you can set this value to 2 to limit the component's processes to 50 percent usage of each CPU core. On a device with 1 CPU core, you can set this value to 0.25 to limit the component's processes to 25 percent usage of the CPU. If you set this value to a number greater than the number of CPU cores, the AWS IoT Greengrass Core software doesn't limit the component's CPU usage.  
*Required*: No  
*Type*: Number  
*Minimum*: `0`  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`Memory`  <a name="cfn-greengrassv2-deployment-systemresourcelimits-memory"></a>
The maximum amount of RAM, expressed in kilobytes, that a component's processes can use on the core device. For more information, see [Configure system resource limits for components](https://docs.aws.amazon.com/greengrass/v2/developerguide/configure-greengrass-core-v2.html#configure-component-system-resource-limits).  
*Required*: No  
*Type*: Integer  
*Minimum*: `0`  
*Maximum*: `9223372036854771712`  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)