[jira] [Reopened] (TS-3178) ProxyAllocator improvements

["Brian Geffon (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TS-3178?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Brian Geffon reopened TS-3178:
------------------------------

Reopened due to bug with reclaimable freelist.

> ProxyAllocator improvements
> ---------------------------
>
>                 Key: TS-3178
>                 URL: https://issues.apache.org/jira/browse/TS-3178
>             Project: Traffic Server
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Brian Geffon
>            Assignee: Brian Geffon
>             Fix For: 5.2.0
>
>         Attachments: patch.diff, patch.diff
>
>
> Currently when a ProxyAllocator (Thread Local) has more than a
> configurable number of elements it will return them one-by-one to a
> ClassAllocator (Global Freelist). Returning every item in this fashion is
> inefficient as we'll likely need more items in the future. Therefore we
> should maintain a low watermark (a minimum number) of items that should be in a ProxyAllocator at any one time. When the number of elements reaches high watermark, the free up is triggers to keep it below the low
> watermark. Additionally, the free should be a block free instead of
> one-by-one as we can reduce several hundred compare-and-swap operations to a single CAS



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