[jira] [Comment Edited] (TS-153) "Dynamic" keep-alive timeouts

["Bryan Call (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TS-153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14371627#comment-14371627 ] 

Bryan Call edited comment on TS-153 at 3/20/15 5:03 PM:
--------------------------------------------------------

Added LRU for Keep-Alive and the ability to limit the number of overall connections by only closing Keep-Alive connections for incoming (client) connections.  I will create another ticket to extend the functionality to limit the number of active connections and add the ability to do this for the outgoing connections.


was (Author: bcall):
Added LRU for Keep-Alive and the ability to limit the number of overall connections by only closing Keep-Alive connections.  I will create another ticket to extend the functionality to limit the number of active connections.

> "Dynamic" keep-alive timeouts
> -----------------------------
>
>                 Key: TS-153
>                 URL: https://issues.apache.org/jira/browse/TS-153
>             Project: Traffic Server
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Leif Hedstrom
>            Assignee: Bryan Call
>            Priority: Minor
>              Labels: A
>             Fix For: 5.3.0
>
>         Attachments: ts153.diff
>
>
> (This is from a Y! Bugzilla ticket 1821593, adding it here. . Originally posted by Leif Hedstrom on 2008-03-19):
> Currently you have to set static keep-alive idle timeouts in TS, e.g.
>    CONFIG proxy.config.http.keep_alive_no_activity_timeout_in INT 8
>    CONFIG proxy.config.http.keep_alive_no_activity_timeout_out INT 30
> even with epoll() in 1.17.x, this is difficult to configure, and put an appropriate timeout. The key here is that the
> settings above need to assure that you stay below the max configured number of connections, e.g.:
>     CONFIG proxy.config.net.connections_throttle INT 75000
> I'm suggesting that we add one (or two) new configuration options, and appropriate TS code support, to instead of
> specifying timeouts, we specify connection limits for idle KA connections. For example:
>     CONFIG proxy.config.http.keep_alive_max_idle_connections_in INT 50000
>     CONFIG proxy.config.http_keep_alive_max_idle_connections_out INT 5000
> (one still has to be careful to leave head-room for active connections here, in the example above, 20000 connections
> could be active, which is a lot of traffic).
> These would override the idle timeouts, so one could use the max_idle connections for incoming (client) connections,
> and the idle timeouts for outgoing (origin) connections for instance.
> The benefit here is that it makes configuration not only easier, but also a lot safer for many applications.



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