[ https://issues.apache.org/jira/browse/CASSANDRA-11940?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
T Jake Luciani reassigned CASSANDRA-11940: ------------------------------------------ Assignee: T Jake Luciani > Look into better default file_cache_size for 2.2 > ------------------------------------------------ > > Key: CASSANDRA-11940 > URL: https://issues.apache.org/jira/browse/CASSANDRA-11940 > Project: Cassandra > Issue Type: Improvement > Reporter: T Jake Luciani > Assignee: T Jake Luciani > Fix For: 2.2.x > > > CASSANDRA-8464 added support for mmapped decompression where in version <= > 2.1 the reads were all decompressed in standard heap buffers. > Since the usage of the file_cache is based solely on the buffer capacity we > should/can make this much larger in 2.2 when the disk access mode is mmap. > The downside of this cache being too small is made worse by 8464 since the > buffers are mmapped/unmapped causing explicit page faults. -- This message was sent by Atlassian JIRA (v6.3.4#6332)