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Why is memory fragmentation a concern for long-running applications?

Asked on Nov 22, 2025

Answer

Memory fragmentation is a concern for long-running applications because it can lead to inefficient memory usage, causing the system to run out of memory even when there is enough total free memory available. This happens when free memory is split into small, non-contiguous blocks, making it difficult to allocate larger blocks of memory when needed.

Example Concept: Memory fragmentation occurs when free memory is divided into small, scattered blocks due to repeated allocations and deallocations. In long-running applications, this can lead to situations where large contiguous memory blocks cannot be allocated, despite having sufficient total free memory. This inefficiency can degrade performance and increase the risk of memory allocation failures.

Additional Comment:

Memory fragmentation is more prevalent in systems with dynamic memory allocation.
Garbage-collected languages (e.g., Java, Go) use strategies like compaction to mitigate fragmentation.
Manual memory management languages (e.g., C, C++) require careful allocation strategies to avoid fragmentation.
Monitoring tools can help identify fragmentation issues in long-running applications.

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Why is memory fragmentation a concern for long-running applications?

Asked on Nov 22, 2025

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