hardware

问题 When there is a page fault or a cache miss we can use either the Least Recently Used (LRU), First in Fist Out (FIFO) or Random replacement algorithms. I was wondering, which one provides the best performance aka the least possible future cache miss'/page faults? Architecture: Coldfire processor 回答1: No perfect caching policy exists because it would require knowledge of the future (how a program will access memory). But, some are measurably better than others in the common memory access

问题 When there is a page fault or a cache miss we can use either the Least Recently Used (LRU), First in Fist Out (FIFO) or Random replacement algorithms. I was wondering, which one provides the best performance aka the least possible future cache miss'/page faults? Architecture: Coldfire processor 回答1: No perfect caching policy exists because it would require knowledge of the future (how a program will access memory). But, some are measurably better than others in the common memory access

问题 The memory map of the peripherals are defined by the chipset. However, modern operating systems like linux and Windows can boot from pretty much every chip (if compiled for the right architecture). As far as I know, the memory mapped devices like the USB Host are not included in the architecture standard. How can the OS still boot, load the drivers, and function? I suppose there must be some specification where the chipset is described. Formulated a little different: How does the

问题 The memory map of the peripherals are defined by the chipset. However, modern operating systems like linux and Windows can boot from pretty much every chip (if compiled for the right architecture). As far as I know, the memory mapped devices like the USB Host are not included in the architecture standard. How can the OS still boot, load the drivers, and function? I suppose there must be some specification where the chipset is described. Formulated a little different: How does the

问题 The memory map of the peripherals are defined by the chipset. However, modern operating systems like linux and Windows can boot from pretty much every chip (if compiled for the right architecture). As far as I know, the memory mapped devices like the USB Host are not included in the architecture standard. How can the OS still boot, load the drivers, and function? I suppose there must be some specification where the chipset is described. Formulated a little different: How does the

来源： https://stackoverflow.com/questions/59079926/rpi-dht22-with-flask-unable-to-set-line-4-to-input-timed-out-waiting-for-puls

来源： https://stackoverflow.com/questions/59079926/rpi-dht22-with-flask-unable-to-set-line-4-to-input-timed-out-waiting-for-puls

来源： https://stackoverflow.com/questions/63440762/could-a-processor-be-made-that-supports-multiple-isas-ex-arm-x86

来源： https://stackoverflow.com/questions/63440762/could-a-processor-be-made-that-supports-multiple-isas-ex-arm-x86

来源： https://stackoverflow.com/questions/63440762/could-a-processor-be-made-that-supports-multiple-isas-ex-arm-x86