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https://issues.apache.org/jira/browse/TS-87?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12833229#action_12833229
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Leif Hedstrom commented on TS-87:
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This is the remap.config I used, the records.config is pretty much default ATS
records.config, with port changed to 8080, and 16MB RAM cache (and a disk cache
in storage.config, of course).
ap http://loki.ogre.com/ycs1 http://l.yimg.com/a/lib/ycs
map http://loki.ogre.com/ycs2 http://l.yimg.com/a/lib/ycs
map http://loki.ogre.com/ycs3 http://l.yimg.com/a/lib/ycs
map http://loki.ogre.com/ycs4 http://l.yimg.com/a/lib/ycs
map http://loki.ogre.com/ycs5 http://l.yimg.com/a/lib/ycs
map http://loki.ogre.com/ycs6 http://l.yimg.com/a/lib/ycs
map http://loki.ogre.com/ycs7 http://l.yimg.com/a/lib/ycs
map http://loki.ogre.com/ycs8 http://l.yimg.com/a/lib/ycs
map http://loki.ogre.com/ycs9 http://l.yimg.com/a/lib/ycs
map http://loki.ogre.com/ycs http://l.yimg.com/a/lib/ycs
The test just hits these URLs, running for about an hour crashes on my box.
Note that this is 100% cache hits.
> Performance improvement: Avoid linear search in remap code
> ----------------------------------------------------------
>
> Key: TS-87
> URL: https://issues.apache.org/jira/browse/TS-87
> Project: Traffic Server
> Issue Type: Improvement
> Components: Core
> Reporter: Manjesh Nilange
> Assignee: Leif Hedstrom
> Priority: Minor
> Fix For: 2.0.0a
>
> Attachments: trie.patch
>
>
> Currently, the remap code stores all the remap rules in a hash table keyed by
> the host field of the "from URL" of the rule. Entries with the same host
> field are chained in a linked list. When looking for a mapping, the code has
> to do a linear traversal of this list, based on the path of the incoming
> request to find a matching rule. This performance should be improved as
> overhead can be substantial in cases where there are hundreds of the entries
> for the same host.
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