[jira] Assigned: (TS-86) HTTP cache miss latency huge

["John Plevyak (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TS-86?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

John Plevyak reassigned TS-86:
------------------------------

    Assignee: John Plevyak

> HTTP cache miss latency huge
> ----------------------------
>
>                 Key: TS-86
>                 URL: https://issues.apache.org/jira/browse/TS-86
>             Project: Traffic Server
>          Issue Type: Improvement
>          Components: Core
>            Reporter: John Plevyak
>            Assignee: John Plevyak
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Single client back to back cache misses have an average latency of 50+ msecs.  Cache hits (in ramcache) are substantially sub msec.
> The problem seems to be with scheduling of events.  My feeling is that this would be best addressed by reexamining the event/net subsystems
> and possibly accelerating a move to libev which portabiliy supports waking threads waiting on I/O for cross-thread events. 

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