RFR(S): 8209162: Page size selection does not always select optimal page size

[Thomas Schatzl]

Hi,

On 21.04.20 14:59, Stefan Johansson wrote:
> 
> 
> On 2020-04-21 14:44, Thomas Schatzl wrote:
>> Hi,
>>
>> On 21.04.20 14:28, Stefan Johansson wrote:
>>>
>>>
>>> On 2020-04-21 13:22, Thomas Schatzl wrote:
>>>> Hi,
[...]
>>
>> Then again, this is parallel gc we are talking about which you likely 
>> want to run with -Xms==-Xmx.
>>
>> The "4" and "8" constants in the code are "random" numbers.
> Yeah, the scenarios where the 8 help feels very limited and constructed. 
> I would argue that a 1GB granularity would be a bit much even if the 
> heap is 10g.
> 
> In cases where 1g pages are configured I would imagine that the heap 
> sizes used are a lot bigger than this. Kind of like for 2mb page, if it 
> works sub-optimal for 10mb heaps, I'm fine with that.
> 
> So are you ok skipping the 8 and just going for not as random 4?

That's fine with me. We can change it again.

Thomas