RFR: 8033440: jmap reports unexpected used/free size of concurrent mark-sweep generation (original) (raw)

Mikael Gerdin mikael.gerdin at oracle.com
Fri Feb 14 06:27:30 PST 2014

On Friday 14 February 2014 09.13.21 Coleen Phillimore wrote:

Why is this code in the SA in the first place? Did someone copy the CMS collector in there too?

To be able to calculate the amount of used and free memory in a CMS heap. (jmap -heap )

/Mikael

Coleen On 2/14/14 8:47 AM, Stefan Johansson wrote: > Hi, > > Please review this change to fix: > https://bugs.openjdk.java.net/browse/JDK-8033440 > > Webrev: > http://cr.openjdk.java.net/~sjohanss/8033440/webrev.00/ > > Summary: > The compactibleFreeListSpace has been updated to use an > AdaptiveFreeList instead of a FreeList. This change has not been done > for the SA and it leads to using a too small element size when walking > through the list. When fixing this I realized that FreeList > and some other type declarations associated with it weren't used by > the SA, so I went ahead and removed them. I (or Eclipse) also changed > the Java *-imports to be specific ones. > > Testing: > * JPRT for build and sanity. > * UTE run for tests listed in bug. > * Aurora run for tmtools.testlist. > > Thanks, > Stefan

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