[jira] [Commented] (COUCHDB-3191) Improve couch_lru performance

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/COUCHDB-3191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15583171#comment-15583171 ] 

ASF GitHub Bot commented on COUCHDB-3191:
-----------------------------------------

Github user davisp commented on the pull request:

    https://github.com/apache/couchdb-couch/commit/39357ed8102e9ea3367a012ed17c9a0940cdc38f#commitcomment-19457218
  
    Also, this compare view link should maintain current code so anyone can see progress. I'm currently chasing down what I think are a few unrelated test failures due to out dated dependencies after I rebase couch to master.
    
    https://github.com/apache/couchdb-couch/compare/fb12795de011f8eb65a6f0a1ed67828486d21bb8...cloudant:COUCHDB-3191-improve-couch-lru-performance


> Improve couch_lru performance
> -----------------------------
>
>                 Key: COUCHDB-3191
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-3191
>             Project: CouchDB
>          Issue Type: Improvement
>          Components: Database Core
>            Reporter: Paul Joseph Davis
>
> This ticket is to track work around updating couch_lru to be more performant. So far I have a change that replaces the gb_tree/dict pair with two khash'es. This approach allows us to change the algorithmic speed from O(N log N) to O(1) which should in theory make this faster.
> This is motivated by the poor behavior of couch_server when under load by lots of concurrent clients and a high max_dbs_open value.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)