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From "Tim Armstrong (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (IMPALA-5073) Allocate huge pages via mmap() in buffer pool
Date Wed, 15 Mar 2017 18:14:42 GMT

     [ https://issues.apache.org/jira/browse/IMPALA-5073?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tim Armstrong updated IMPALA-5073:
----------------------------------
    Target Version: Product Backlog

> Allocate huge pages via mmap() in buffer pool
> ---------------------------------------------
>
>                 Key: IMPALA-5073
>                 URL: https://issues.apache.org/jira/browse/IMPALA-5073
>             Project: IMPALA
>          Issue Type: Sub-task
>          Components: Backend
>    Affects Versions: Impala 2.9.0
>            Reporter: Tim Armstrong
>            Assignee: Tim Armstrong
>
> We want to switch from allocating buffers via TCMalloc and rather use mmap directly.
The allocator would allocate multiples of the buffer size only (perhaps only powers-of-two?).
> We will also need to wire up the MemTrackers so they include this memory in the process
estimate.



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