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Memory Allocation (20 minutes) Assume you have a buddy allocator that initially has a single 512 byte free block. You cannot allocate more memory. The first allocation is for 200 bytes. Describe how the allocation occurs with the buddy algorithm. State what's in the free list after the allocation. How many bytes are lost to internal fragmentation after this first allocation? Next, we deallocate the 200 byte allocation. Describe what happens. State what the free list looks like now. Now, we get 4 different 100 byte allocations. You don't have to describe the process. However, state the free list at the end of all 4 allocations. How many bytes are lost due to internal fragmentation after the 4 allocations? Describe an approach you could take to fit another 100 byte allocation within your original 512 bytes. You can assume you can use your approach to allocate all 5 100 byte allocations from scratch.

Memory Allocation (20 minutes) Assume you have a buddy allocator that initially has a single 512 byte free block. You cannot allocate more memory. The first allocation is for 200 bytes. Describe how the allocation occurs with the buddy algorithm. State what's in the free list after the allocation. How many bytes are lost to internal fragmentation after this first allocation? Next, we deallocate the 200 byte allocation. Describe what happens. State what the free list looks like now. Now, we get 4 different 100 byte allocations. You don't have to describe the process. However, state the free list at the end of all 4 allocations. How many bytes are lost due to internal fragmentation after the 4 allocations? Describe an approach you could take to fit another 100 byte allocation within your original 512 bytes. You can assume you can use your approach to allocate all 5 100 byte allocations from scratch.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Memory Allocation (20 minutes) Assume you have a buddy allocator that initially has a single 512 byte free block. You cannot allocate more memory. The first allocation is for 200 bytes. Describe how the allocation occurs with the buddy algorithm. State what's in the free list after the allocation. How many bytes are lost to internal fragmentation after this first allocation? Next, we deallocate the 200 byte allocation. Describe what happens. State what the free list looks like now. Now, we get 4 different 100 byte allocations. You don't have to describe the process. However, state the free list at the end of all 4 allocations. How many bytes are lost due to internal fragmentation after the 4 allocations? Describe an approach you could take to fit another 100 byte allocation within your original 512 bytes. You can assume you can use your approach to allocate all 5 100 byte allocations from scratch.
Transcribed Image Text:Memory Allocation (20 minutes) Assume you have a buddy allocator that initially has a single 512 byte free block. You cannot allocate more memory. The first allocation is for 200 bytes. Describe how the allocation occurs with the buddy algorithm. State what's in the free list after the allocation. How many bytes are lost to internal fragmentation after this first allocation? Next, we deallocate the 200 byte allocation. Describe what happens. State what the free list looks like now. Now, we get 4 different 100 byte allocations. You don't have to describe the process. However, state the free list at the end of all 4 allocations. How many bytes are lost due to internal fragmentation after the 4 allocations? Describe an approach you could take to fit another 100 byte allocation within your original 512 bytes. You can assume you can use your approach to allocate all 5 100 byte allocations from scratch.
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