JRuby

invokedynamic performance degradation on a certain workload

Details

  • Type: Bug Bug
  • Status: Resolved Resolved
  • Priority: Major Major
  • Resolution: Fixed
  • Affects Version/s: JRuby 1.7.0.pre1
  • Fix Version/s: JRuby 1.7.0.RC1
  • Component/s: Projects
  • Labels:
    None
  • Environment:
    OpenJDK Server 1.7u2, self-compiled, 32-bit Debian Linux system, 4G of RAM
  • Testcase included:
    yes
  • Number of attachments :
    0

Description

https://github.com/whitequark/furnace-avm2

@headius knows what this is all about.

Activity

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Charles Oliver Nutter added a comment -

Is there any way I can reproduce this? There are now builds of the new invokedynamic logic in OpenJDK, and we could help the Hotspot team by testing your stuff out and reporting performance numbers.

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Charles Oliver Nutter added a comment - Is there any way I can reproduce this? There are now builds of the new invokedynamic logic in OpenJDK, and we could help the Hotspot team by testing your stuff out and reporting performance numbers.
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Peter Zotov added a comment -

I think I cannot reproduce it anymore on latest JRE (u5) and JRuby. I'll reopen the bug if it will remanifest itself. I'm regularly running performance tests on JRuby head.

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Peter Zotov added a comment - I think I cannot reproduce it anymore on latest JRE (u5) and JRuby. I'll reopen the bug if it will remanifest itself. I'm regularly running performance tests on JRuby head.
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Charles Oliver Nutter added a comment -

Great, thank you. If you're interested, I can get you access to the new invokedynamic logic slated for Java 8 (and hopefully Java 7 update 8), which has not yet been optimized but which should eventually optimize much better than the current logic. Find me on IRC if you're interested.

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Charles Oliver Nutter added a comment - Great, thank you. If you're interested, I can get you access to the new invokedynamic logic slated for Java 8 (and hopefully Java 7 update 8), which has not yet been optimized but which should eventually optimize much better than the current logic. Find me on IRC if you're interested.
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Charles Oliver Nutter added a comment -

We'll call this fixed in RC1.

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Charles Oliver Nutter added a comment - We'll call this fixed in RC1.

People

  • Assignee:
    Charles Oliver Nutter
    Reporter:
    Peter Zotov
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Dates

  • Created:
    Updated:
    Resolved: