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Posted to issues@activemq.apache.org by "Francesco Nigro (JIRA)" <ji...@apache.org> on 2018/07/11 09:09:00 UTC

[jira] [Updated] (ARTEMIS-1977) ASYNCIO can reduce sys-calls to retrieve I/O events

     [ https://issues.apache.org/jira/browse/ARTEMIS-1977?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Francesco Nigro updated ARTEMIS-1977:
-------------------------------------
    Summary: ASYNCIO can reduce sys-calls to retrieve I/O events  (was: ASYNCIO can reduce sys-calls to retrieve I/O completion events)

> ASYNCIO can reduce sys-calls to retrieve I/O events
> ---------------------------------------------------
>
>                 Key: ARTEMIS-1977
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-1977
>             Project: ActiveMQ Artemis
>          Issue Type: Improvement
>          Components: Broker
>    Affects Versions: 2.6.2
>            Reporter: Francesco Nigro
>            Assignee: Francesco Nigro
>            Priority: Minor
>             Fix For: 2.7.0
>
>
> On LibAIO is possible to retrieve the I/O completion events without 
> using io_getevents sys-calls by reading the user-space ring buffer used by the
> kernel to store them.
> This is already beneficial for very fast disks and necessary for further improvements
> of ASYNCIO Journal to leverage (very) fast low-latency disks by going completly
> lock-free. 
>  
>  



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