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From "Ben Manes (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-11452) Cache implementation using LIRS eviction for in-process page cache
Date Thu, 14 Apr 2016 16:06:25 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-11452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15241420#comment-15241420
] 

Ben Manes commented on CASSANDRA-11452:
---------------------------------------

For large traces the difference is marginal, with s3 showing a 2% loss. For small traces the
difference can be substantial

db: 51.29 -> 51.52
s3: 51.10 -> 49.12
oltp: 37.91 -> 38.10
multi1: 55.59 -> 50.50
gli: 34.16 -> 16.11
cs: 30.31 -> 26.74

> Cache implementation using LIRS eviction for in-process page cache
> ------------------------------------------------------------------
>
>                 Key: CASSANDRA-11452
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11452
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Local Write-Read Paths
>            Reporter: Branimir Lambov
>            Assignee: Branimir Lambov
>
> Following up from CASSANDRA-5863, to make best use of caching and to avoid having to
explicitly marking compaction accesses as non-cacheable, we need a cache implementation that
uses an eviction algorithm that can better handle non-recurring accesses.



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