Esper

Load balance listener instances

Details

  • Type: Improvement Improvement
  • Status: Closed Closed
  • Priority: Minor Minor
  • Resolution: Won't Fix
  • Affects Version/s: 3.0
  • Fix Version/s: None
  • Component/s: Core, Performance
  • Labels:
    None
  • Number of attachments :
    0

Description

Currently Esper calls all listener instances of an EPStatement, instead of load balancing the calls to the listener instances.
If the calls are load balanced then:
1. User would provide the list of listener objects for an EPStatement which Esper would maintain in a pool, for each of such statements.
2. Whenever match(es) occur for that statement, Esper would call one or multiple listener instance(s) from the pool and hence reuse the listener instances concurrently.

Mailing list discussion: http://archive.esper.codehaus.org/user/507053.14107.qm%40web37107.mail.mud.yahoo.com

Activity

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Thomas Bernhardt made changes -
Field Original Value New Value
Fix Version/s 2.0 [ 12720 ]
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Thomas Bernhardt added a comment -

This would mean a little more thread context switching which incurs a performance penalty

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Thomas Bernhardt added a comment - This would mean a little more thread context switching which incurs a performance penalty
Thomas Bernhardt made changes -
Fix Version/s 2.0 [ 12720 ]
Affects Version/s 1.10 [ 13520 ]
Affects Version/s 3.0 [ 12718 ]
Fix Version/s 3.0 [ 12718 ]
Thomas Bernhardt made changes -
Fix Version/s 4.0 [ 14853 ]
Fix Version/s 3.0 [ 12718 ]
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Thomas Bernhardt added a comment -

this could be done by an application itself and will not be considered as a change to the core engine.

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Thomas Bernhardt added a comment - this could be done by an application itself and will not be considered as a change to the core engine.
Thomas Bernhardt made changes -
Resolution Won't Fix [ 2 ]
Status Open [ 1 ] Closed [ 6 ]
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Thomas Bernhardt added a comment -

change fix version

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Thomas Bernhardt added a comment - change fix version
Thomas Bernhardt made changes -
Resolution Won't Fix [ 2 ]
Status Closed [ 6 ] Reopened [ 4 ]
Thomas Bernhardt made changes -
Fix Version/s 4.0 - requires JDK6 [ 14853 ]
Thomas Bernhardt made changes -
Resolution Won't Fix [ 2 ]
Status Reopened [ 4 ] Closed [ 6 ]

People

  • Assignee:
    Unassigned
    Reporter:
    luk
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Dates

  • Created:
    Updated:
    Resolved: