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What do you mean by Belady's Anomaly. - Describe with example.
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Answer / ajith
Also called FIFO anomaly. Usually, on increasing the number
of frames allocated to a process' virtual memory, the
process execution is faster, because fewer page faults
occur. Sometimes, the reverse happens, i.e., the execution
time increases even when more frames are allocated to the
process. This is Belady's Anomaly. This is true for certain
page reference patterns.
| Is This Answer Correct ? | 58 Yes | 11 No |
Answer / assi
normally, increasing the number of frames allocated to a
process will reduce the number of page faults
however, not always the case
1, 2, 3, 4, 1, 2, 5, 1, 2, 3, 4, 5
with this reference string, actually have more page faults
with 4 frames than with 3
this rare but highly undesirable situation is known as
Belady's anomaly
| Is This Answer Correct ? | 20 Yes | 3 No |
Answer / sunil kumar
normally, increasing the number of frames allocated to a
process will reduce the number of page faults
however, not always the case
1, 2, 3, 4, 1, 2, 5, 1, 2, 3, 4, 5
with this reference string, actually have more page faults
with 4 frames than with 3
this rare but highly undesirable situation is known as
Belady's anomaly
| Is This Answer Correct ? | 8 Yes | 3 No |
Answer / geethika
In computer storage Beladay's anamoly means increasing the number of memory frames will increase the number of page faults for certain memory access patterns. This anamoly is commonly experienced in FIFO page replacement algorithm.
| Is This Answer Correct ? | 0 Yes | 0 No |
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