RFR (S) 8146801: Allocating short arrays of non-constant size is slow

[Vitaly Davidovich]

Related question - can the prefetch hints go away for small array
allocations considering size is already being branched on? I've noticed
allocations always come with a prefetch sequence, so perhaps this is just
standard allocation pattern.

On Tuesday, March 1, 2016, Vladimir Kozlov <vladimir.kozlov at oracle.com>
wrote:

> Perfect!
>
> Thanks,
> Vladimir
>
> On 3/1/16 1:46 PM, Aleksey Shipilev wrote:
>
>> On 03/01/2016 08:03 PM, Vladimir Kozlov wrote:
>>
>>> Do you have new performance numbers? I hope it did not regress with new
>>> code.
>>>
>>
>> It does not regress, the code is tight:
>>    http://cr.openjdk.java.net/~shade/8146801/notes.txt
>>
>> 2 things left I fill should be addressed.
>>>
>>
>> Both are fixed here:
>>    http://cr.openjdk.java.net/~shade/8146801/webrev.06/
>>
>> Still passes JPRT -testset hotspot; RBT run is in progress.
>>
>> Cheers,
>> -Aleksey
>>
>>

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