aurora-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Chris Lambert (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AURORA-1156) Preemptor perf improvements
Date Mon, 02 Mar 2015 21:54:06 GMT

     [ https://issues.apache.org/jira/browse/AURORA-1156?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chris Lambert updated AURORA-1156:
----------------------------------
    Story Points: 2

> Preemptor perf improvements
> ---------------------------
>
>                 Key: AURORA-1156
>                 URL: https://issues.apache.org/jira/browse/AURORA-1156
>             Project: Aurora
>          Issue Type: Task
>          Components: Scheduler
>            Reporter: Maxim Khutornenko
>            Assignee: Maxim Khutornenko
>
> There are two minor algorithm changes that should result in overall preemptor perf improvements:
> 1. There seems to be a redundant scheduling attempt here: \[1\]. The preemptor loop is
triggered within the same storage write lock right after a failed {{OfferManager.launchFirst()}}
run that has already attempted to match all available offers. There is no reason to attempt
another match given the same system conditions, especially considering that a positive scheduling
result from this loop is discarded anyway \[2\].
> 2. Instead of running an expensive scheduling loop \[3\] for every task victim, it's
possible to "size up" victim resources and call scheduling filter only when rough resource
estimates are sufficient. Something like:
> {noformat}
> if (totalResource.greaterOrEqualThan(ResourceSlot.from(pendingTask))) {
>   // call schedulingFilter
> }
> {noformat}
> \[1\] - https://github.com/apache/incubator-aurora/blob/master/src/main/java/org/apache/aurora/scheduler/async/preemptor/PreemptorImpl.java#L220-L237
> \[2\] - https://github.com/apache/incubator-aurora/blob/master/src/main/java/org/apache/aurora/scheduler/async/preemptor/PreemptorImpl.java#L338
> \[3\] - https://github.com/apache/incubator-aurora/blob/master/src/main/java/org/apache/aurora/scheduler/async/preemptor/PreemptorImpl.java#L263-L265



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

Mime
View raw message