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When a process gains control of the CPU, it retains control until it voluntarily yields, is preempted by a higher-priority process (in later IOS versions), or finishes its task. There is no strict memory protection between processes. Every process executes in the same memory space. inside cisco ios software architecture pdf
Used for the IOS code itself, routing tables, and system data structures. Alternatives to the "illegal PDF" search: When a
The PDF explains the dreaded %SYS-2-MALLOCFAIL error—which occurs when memory fragments. Because IOS uses a "chunk" allocator, small fragments of used memory can prevent large contiguous blocks from being allocated, freezing the router. freezing the router.