RFR: Forward port of 8055006 - Store original value of Min/MaxHeapFreeRatio

Jesper Wilhelmsson jesper.wilhelmsson at oracle.com
Sat Sep 20 17:16:29 UTC 2014

Hi all,

I got approvals for the HotSpot changes and they have now been pushed to 
jdk9/hs-gc. For the JDK makefile change I would prefer if someone that feels 
comfortable with the JDK makefiles would have a look at it before I push that part.


Jesper Wilhelmsson skrev 16/9/14 20:32:
> Hi,
> The fix for JDK-8055006 was reviewed by several engineers and was pushed
> directly to 8u40 due to time constraints. This is a forward port to get the same
> changes into JDK 9.
> There are two webrevs, one for HotSpot and one for the JDK.
> The 8u40 HotSpot change applied cleanly to 9 so if this was a traditional
> backport it wouldn't require another review. But since this is a weird situation
> and I'm pushing to 9 I'll ask for reviews just to be on the safe side.
> Also, the original 8u40 push contained some unnecessary changes that was later
> cleaned up by JDK-8056056. In this port to 9 I have merged these two changes
> into one to avoid introducing a known issue only to remove it again.
> The JDK change is new. The makefiles differ between 8u40 and 9 and this new
> change makes use of functionality not present in 8u40. This patch was provided
> by Erik Joelsson and I have reviewed it myself, but it needs two reviews so
> another one is welcome.
> Bug: https://bugs.openjdk.java.net/browse/JDK-8055006
> Webrevs: http://cr.openjdk.java.net/~jwilhelm/8055006/jdk9/
> 8u40 Webrevs: http://cr.openjdk.java.net/~jwilhelm/8055006/
> 8u40 changes:
> http://hg.openjdk.java.net/jdk8u/jdk8u-dev/hotspot/rev/f933a15469d4
> http://hg.openjdk.java.net/jdk8u/jdk8u-dev/jdk/rev/312152328471
> Bug and change for the second 8u40 fix:
> https://bugs.openjdk.java.net/browse/JDK-8056056
> http://hg.openjdk.java.net/jdk8u/hs-dev/hotspot/rev/9be4ca335650
> Thanks!
> /Jesper

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