(S) RFR: 8147379: Investigate if ConvertSleepToYield still should be false by default on Sparc

Daniel D. Daugherty daniel.daugherty at oracle.com
Wed Feb 10 15:10:18 UTC 2016

On 2/9/16 5:45 PM, David Holmes wrote:
> bug: https://bugs.openjdk.java.net/browse/JDK-8147379
> webrev:  http://cr.openjdk.java.net/~dholmes/8147379/webrev/

     No comments on your change. There be a bit of JVM/CI cruft here...

     No comments.

     No comments.

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     No comments. (after doing a double take)

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     No comments.

Thumbs up!


> ConvertSleepToYield is a product VM flag that should only have been 
> defined for Solaris, and was by "accident" only set differently 
> (false) on Solaris sparc. It relates to a GUI responsiveness issue in 
> some ancient Solaris version, the details of which have been lost (AWT 
> folk had no input). Changing this setting serves no useful purpose 
> today. So we remove the pd nature of this flag and just make it a 
> shared flag that defaults to true. We also deprecate it.
> ConvertYieldToSleep is a product VM flag that should only have been 
> provided for Windows, but was made available on all platforms. It's 
> role was to allow for backward compatibility with the Classic VM. 
> Changing this setting serves no useful purpose today. It is also 
> deprecated.
> These changes have been approved by our CCC process.
> Testing: - JPRT
>          - updated the VMDeprecatedOptions test
> That was a lot of words for a very small change. :)
> Thanks,
> David

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