Performance problems on NXP RT1176 and Zephyr 4.3.0 #101764
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I have an application running on Zephyr 4.2.0 and want to migrate to 4.3.0, but I'm seeing significant performance degradation. The slowness is not limited to any specific function and it isn't a constant slow down. For example entering an ISR can take 40 usec before my code is run on some loops but other it is 1-2 usec like on 4.3.0. I'm wondering if anyone has seen anything like this or has any ideas on where to start looking for the underlying issue. |
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Replies: 1 comment
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Hi @opaltantalum , To optimize performance, apps typically need to locate at least some of the code in faster memory. |
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Hi @opaltantalum ,
Are you XIPing from QSPI flash? The slow QSPI can have a big impact on performance, depending on the application. NXP has some appnotes that can help, including:
AN12437 i.MX RT Series Performance Optimization
AN13970 RT Series Memory Relocation in Zephyr
To optimize performance, apps typically need to locate at least some of the code in faster memory.
Best regards