ASF GitHub Bot commented on COUCHDB-3191:

Github user davisp commented on the pull request:

    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.

> 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.

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