RFR(T): 8234274 [BACKOUT] JDK-8204128 NMT might report incorrect numbers for Compiler area

[David Holmes]

Hi Dan,

Looks like an accurate backout to me.

Thanks,
David

On 16/11/2019 12:08 pm, Daniel D. Daugherty wrote:
> Greetings,
> 
> The following fix needs to be backed out:
> 
>      JDK-8204128 NMT might report incorrect numbers for Compiler area
>      https://bugs.openjdk.java.net/browse/JDK-8204128
> 
> The fix is causing failures in the stress tiers of the JDK14 CI. Please
> see the info added to the following bug by Leonid:
> 
>      JDK-8234270 HugeArenaTracking.java failed assert(_size >= sz) 
> failed: deallocation > allocated
>      https://bugs.openjdk.java.net/browse/JDK-8234270
> 
> To keep the noise in the CI down over the weekend, I'm backing out the
> fix using the following bug:
> 
>      JDK-8234274 [BACKOUT] JDK-8204128 NMT might report incorrect 
> numbers for Compiler area
>      https://bugs.openjdk.java.net/browse/JDK-8234274
> 
> I'm also backing out the following fix:
> 
>      JDK-8234272 ProblemList runtime/NMT/HugeArenaTracking.java
> 
> Doesn't make sense to ProblemList a test that has been deleted.
> 
> Here's the webrev for the backout:
> 
> http://cr.openjdk.java.net/~dcubed/8234274-webrev/0-for-jdk14/
> 
> I have manually verified the backout against the changeset that precedes
> the changeset for JDK-8204128.
> 
> Thanks, in advance, for any comments, questions or suggestions.
> 
> Dan
> 
> 
>