- Forums
- Product Forums
- General Purpose MicrocontrollersGeneral Purpose Microcontrollers
- i.MX Forumsi.MX Forums
- QorIQ Processing PlatformsQorIQ Processing Platforms
- Identification and SecurityIdentification and Security
- Power ManagementPower Management
- Wireless ConnectivityWireless Connectivity
- RFID / NFCRFID / NFC
- Advanced AnalogAdvanced Analog
- Neural Processing UnitsNeural Processing Units
- MCX Microcontrollers
- S32G
- S32K
- S32V
- MPC5xxx
- Other NXP Products
- S12 / MagniV Microcontrollers
- Powertrain and Electrification Analog Drivers
- Sensors
- Vybrid Processors
- Digital Signal Controllers
- 8-bit Microcontrollers
- ColdFire/68K Microcontrollers and Processors
- PowerQUICC Processors
- OSBDM and TBDML
- S32M
- S32Z/E
-
- Solution Forums
- Software Forums
- MCUXpresso Software and ToolsMCUXpresso Software and Tools
- CodeWarriorCodeWarrior
- MQX Software SolutionsMQX Software Solutions
- Model-Based Design Toolbox (MBDT)Model-Based Design Toolbox (MBDT)
- FreeMASTER
- eIQ Machine Learning Software
- Embedded Software and Tools Clinic
- S32 SDK
- S32 Design Studio
- GUI Guider
- Zephyr Project
- Voice Technology
- Application Software Packs
- Secure Provisioning SDK (SPSDK)
- Processor Expert Software
- Generative AI & LLMs
-
- Topics
- Mobile Robotics - Drones and RoversMobile Robotics - Drones and Rovers
- NXP Training ContentNXP Training Content
- University ProgramsUniversity Programs
- Rapid IoT
- NXP Designs
- SafeAssure-Community
- OSS Security & Maintenance
- Using Our Community
-
- Cloud Lab Forums
-
- Knowledge Bases
- ARM Microcontrollers
- i.MX Processors
- Identification and Security
- Model-Based Design Toolbox (MBDT)
- QorIQ Processing Platforms
- S32 Automotive Processing Platform
- Wireless Connectivity
- CodeWarrior
- MCUXpresso Suite of Software and Tools
- MQX Software Solutions
- RFID / NFC
- Advanced Analog
- Neural Processing Units
-
- NXP Tech Blogs
- Home
- :
- Translated Content
- :
- Multi Source Translation Content
- :
- 2401351_zh-CN
2401351_zh-CN
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Options
- Subscribe to RSS Feed
- Mark as New
- Mark as Read
- Bookmark
- Subscribe
- Printer Friendly Page
- Report Inappropriate Content
2401351_zh-CN
2401351_zh-CN
我们在 IMX8M Plus 上运行 Yocto Linux。
我们注意到，在任何 GPU 活动期间，CPU 访问内存时都会出现巨大的延迟峰值（1-3 毫秒峰值）。这是一个大问题，因为我们使用 XDP 进行网络连接。
我们尝试调整 IMX8MP_ICM_A53、IMX8MP_ICM_GPU3D 和 IMX8MP_ICM_GPU2D，将它们设置为 7、2、2 以进行 QoS 控制。这使得延迟峰值出现的频率降低，但它们仍然存在。我们发现的唯一选择是完全不进行任何 GPU 活动或从设备树中删除 GPU，但这对于我们的使用场景来说是不可接受的。是否还有其他设置可以调整以缓解这种现象？GPU锁定动态随机存取存储器\(DRAM\)的时间不能超过50-100微秒。
嗨@richardlovgren ，
感谢您联系恩智浦技术支持！
请问您使用的是哪个BSP版本？
这个问题在 EVK 上也会出现吗？还是只出现在你的定制硬件上？
能否也提供日志文件、设备树以及其他相关信息，以便我能够调查和诊断问题？
此外，请分享重现问题的具体步骤，以便我可以在我的环境中尝试重现该问题。
此致，
查维拉
No ratings