Add the two-choice random cache eviction policy #16828
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jiacheliu3
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May 16, 2023
…cache eviction policy The PR adds the two-choice random cache eviction policy. The algorithm selects two random page IDs and evicts the one least recently used. From some evaluation (https://danluu.com/2choices-eviction/), the two-choice random policy has competitive performance compared with LRU. Users can configure the new cache eviction policy. pr-link: Alluxio#16828 change-id: cid-f9a140208b3a6938ddc70766abfb3d9f90c722f0
jiacheliu3
pushed a commit
to jiacheliu3/alluxio
that referenced
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May 16, 2023
…cache eviction policy The PR adds the two-choice random cache eviction policy. The algorithm selects two random page IDs and evicts the one least recently used. From some evaluation (https://danluu.com/2choices-eviction/), the two-choice random policy has competitive performance compared with LRU. Users can configure the new cache eviction policy. pr-link: Alluxio#16828 change-id: cid-f9a140208b3a6938ddc70766abfb3d9f90c722f0
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What changes are proposed in this pull request?
The PR adds the two-choice random cache eviction policy. The algorithm selects two random page IDs and evicts the one least recently used.
Why are the changes needed?
From some evaluation (https://danluu.com/2choices-eviction/), the two-choice random policy has competitive performance compared with LRU.
Does this PR introduce any user facing changes?
Users can configure the new cache eviction policy.