https://github.com/jetty-project/selector-hack

Experimental project demonstrating how to hack the Selector within Eclipse Jetty
https://github.com/jetty-project/selector-hack

experimental selector selector-hack windows workaround

Last synced: 10 months ago
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Experimental project demonstrating how to hack the Selector within Eclipse Jetty

• Host: GitHub
• URL: https://github.com/jetty-project/selector-hack
• Owner: jetty-project
• License: other
• Created: 2020-09-29T14:17:59.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2024-11-04T16:24:13.000Z (about 1 year ago)
• Last Synced: 2025-01-23T22:14:18.873Z (12 months ago)
• Topics: experimental, selector, selector-hack, windows, workaround
• Language: Java
• Homepage:
• Size: 160 KB
• Stars: 1
• Watchers: 7
• Forks: 1
• Open Issues: 5
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Experimental Selector Hack for Eclipse Jetty

On some machines, the NIO Selector shows signs of a buggy implementation

that spuriously wakes up the selector to report 0 selected keys.

The symptoms of this kind of OS / Network driver bug is 100% CPU usage.

Example: https://github.com/eclipse/jetty.project/issues/2205

This repository contains an experimental ServerConnector that will

rebuild there are consecutive select of 0 that exceeds `WorkaroundManagedSelector.MAX_NO_SELECT`.

To use this alternate ServerConnector would require substituting usages of

`org.eclipse.jetty.server.ServerConnector` with the special one provide in here

`org.eclipse.jetty.server.WorkaroundServerConnector`.

**NOTICE:** Do not use this workaround if you don't have the above mentioned bugs on your

system, as the performance of this workaround will negatively impact systems without

the selector bug.