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

Aleksey Shipilev aleksey.shipilev at oracle.com
Mon Feb 29 23:19:02 UTC 2016


On 03/01/2016 01:42 AM, Christian Thalinger wrote:
>> On Feb 29, 2016, at 12:24 PM, Aleksey Shipilev <aleksey.shipilev at oracle.com> wrote:
>> On 03/01/2016 12:53 AM, Christian Thalinger wrote:
>>>> On Feb 29, 2016, at 11:02 AM, Aleksey Shipilev
>>> +  product_pd(intx, InitArrayShortSize,                                
>>>     \
>>>
>>> Don’t make it a product flag; diagnostic should be sufficient.  This
>>> will require adding diagnostic_pd support.  If you don’t want to do that
>>> make the flag develop.
>>
>> Okay, develop_pd now:
>>  http://cr.openjdk.java.net/~shade/8146801/webrev.03/
> 
> +define_pd_global(intx, InitArrayShortSize,           18*BytesPerLong);
> 
> Can you remove the spaces in all files?  Otherwise this looks good.

Yup:
  http://cr.openjdk.java.net/~shade/8146801/webrev.04/

>> diagnostic_pd would certainly be nice to have, but I don't really want
>> to get even deeper into this rabbit hole.
> 
> …which I understand.  We should file a starter Enhancement.

Here:
  https://bugs.openjdk.java.net/browse/JDK-8150900

Thanks,
-Aleksey

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