> For the complete documentation index, see [llms.txt](https://docs.parallels.com/landing/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.parallels.com/landing/ras-rest-api-guide/api-reference/site-settings/cpu-optimization.md).
# CPU Optimization
## Get
> Retrieve Parallels RAS CPU Optimization Settings.
```json
{"openapi":"3.0.1","info":{"title":"Parallels RAS - REST API v1.0","version":"1.0"},"paths":{"/api/CPUOptimizationSettings":{"get":{"tags":["2-Site settings//CPU Optimization"],"summary":"Get","description":"Retrieve Parallels RAS CPU Optimization Settings.","operationId":"e6491640-69cd-409f-bcde-1c6830412c8f","parameters":[{"name":"siteId","in":"query","description":"The Site ID for which to retrieve the Parallels RAS CPU Optimization settings. (optional)","schema":{"type":"integer","format":"int32"}}],"responses":{"200":{"description":"Success","content":{"application/json; api-version=1.0":{"schema":{"$ref":"#/components/schemas/CPUOptimizationSettings"}}}},"401":{"description":"Unauthorized","content":{"application/json; api-version=1.0":{"schema":{"$ref":"#/components/schemas/ProblemDetails"}}}},"404":{"description":"Not Found","content":{"application/json; api-version=1.0":{"schema":{"$ref":"#/components/schemas/ProblemDetails"}}}}}}}},"components":{"schemas":{"CPUOptimizationSettings":{"type":"object","properties":{"enableCPUOptimization":{"type":"boolean","description":"Whether the \"CPU Optimization\" option is enabled or disabled."},"startUsage":{"type":"integer","description":"The CPU usage percentage above which the CPU Optimization will start working.","format":"int32"},"criticalUsage":{"type":"integer","description":"The CPU usage percentage above which a process will be set to idle priority.","format":"int32"},"idleUsage":{"type":"integer","description":"The CPU usage percentage below which a process will be set to realtime priority.","format":"int32"},"replicate":{"type":"boolean","description":"Whether the \"Replicate settings\" option (replicate settings to all sites) is enabled or disabled."},"cpuExcludeList":{"type":"array","items":{"type":"string"},"description":"Specifies items in the CPUExclude list","nullable":true},"siteId":{"type":"integer","description":"The site ID to which the RAS CPU Optimization settings refer.","format":"int32"}},"additionalProperties":false,"description":"RAS CPU Optimization Setting\r\n"},"ProblemDetails":{"type":"object","properties":{"type":{"type":"string","nullable":true},"title":{"type":"string","nullable":true},"status":{"type":"integer","format":"int32","nullable":true},"detail":{"type":"string","nullable":true},"instance":{"type":"string","nullable":true}},"additionalProperties":{}}}}}
```
## Update
> Update Parallels RAS CPU Optimization Settings.
```json
{"openapi":"3.0.1","info":{"title":"Parallels RAS - REST API v1.0","version":"1.0"},"paths":{"/api/CPUOptimizationSettings":{"put":{"tags":["2-Site settings//CPU Optimization"],"summary":"Update","description":"Update Parallels RAS CPU Optimization Settings.","operationId":"1d9175e9-3da8-473a-8415-9031ae6baff4","parameters":[{"name":"siteId","in":"query","description":"The Site ID for which to modify the Parallels RAS CPU Optimization settings (optional).","schema":{"type":"integer","format":"int32"}}],"requestBody":{"description":"CPU Optimization settings.","content":{"application/json; api-version=1.0":{"schema":{"$ref":"#/components/schemas/SetCPUOptimizationSettings"}}}},"responses":{"204":{"description":"No Content"},"401":{"description":"Unauthorized","content":{"application/json; api-version=1.0":{"schema":{"$ref":"#/components/schemas/ProblemDetails"}}}},"404":{"description":"Not Found","content":{"application/json; api-version=1.0":{"schema":{"$ref":"#/components/schemas/ProblemDetails"}}}}}}}},"components":{"schemas":{"SetCPUOptimizationSettings":{"type":"object","properties":{"cpuExcludeList":{"type":"array","items":{"type":"string"},"description":"Specifies items in the CPUExclude list.","nullable":true},"startUsage":{"type":"integer","description":"The CPU usage percentage above which the CPU Optimization will start working.","format":"int32","nullable":true},"criticalUsage":{"type":"integer","description":"The CPU usage percentage above which a process will be set to idle priority.","format":"int32","nullable":true},"idleUsage":{"type":"integer","description":"The CPU usage percentage below which a process will be set to realtime priority.","format":"int32","nullable":true},"enableCPUOptimization":{"type":"boolean","description":"Enables or disables the \"CPU Optimization\" option.","nullable":true},"replicate":{"type":"boolean","description":"Enables or disables the \"Replicate settings\" option (replicate settings to all sites).","nullable":true}},"additionalProperties":false,"description":"Update CPU Optimization Settings\r\n"},"ProblemDetails":{"type":"object","properties":{"type":{"type":"string","nullable":true},"title":{"type":"string","nullable":true},"status":{"type":"integer","format":"int32","nullable":true},"detail":{"type":"string","nullable":true},"instance":{"type":"string","nullable":true}},"additionalProperties":{}}}}}
```
---
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```
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```
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