Proposal: MaxTenuringThreshold and age field size changes

Thomas Viessmann Thomas.Viessmann at Sun.COM
Thu May 29 06:44:49 UTC 2008

Just my two cents:

 > (out of curiosity: does anyone actually use -XX:+NeverTenure?)

No, I wasn't even aware of this flag.

 > If MTT is set by the user to a value > max age, we will actually set 
it to max age.

Agree. Still most customers use 32.

> how many people on the list missed the age-bit that vanished across the 
> 5u5->5u6 transition and wished the bit were back?

Actually most if not all customers missed that change. I always see
32 or 0. Nothing in between. Customers typically just enable or disable
survivor spaces and do not care about the 4 or 5 bit granularity of

mit freundlichen Gruessen / with kind regards

Thomas Viessmann

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