[ping] Re: [11] RFR(M): 8189922: UseNUMA memory interleaving vs membind

Gustavo Romero gromero at linux.vnet.ibm.com
Fri Jul 20 20:53:45 UTC 2018

Hi Thomas,

On 07/20/2018 05:34 PM, Thomas Schatzl wrote:
> Hi,
> On Thu, 2018-07-19 at 18:20 -0300, Gustavo Romero wrote:
>> Hi Thomas,
>> On 07/19/2018 09:36 AM, Thomas Schatzl wrote:
>>> Hi,
> [...]
>>> I can sponsor to push the change into whatever JDK it ends up.
>> OK. I'll stay tuned to see how the new triage goes. Thanks a lot for
>> sponsoring it as well.
> I will push the v3 change into 11 on Monday. The numbers you gave (here
> and on the CR) showed significant perf degradation.
> Thanks for making us aware of that.

Who first caught my attention about that issue was Swati from AMD.
I basically only confirmed the issue on PPC64, reviewed her initial change and
after Derek confirmed it also fixed the issue on AARCH64 I offered to host
Swati's final version, which is now v3 after you, Derek, David reviewed it :)

Hence I added the following to the commit msg:

8189922: UseNUMA memory interleaving vs membind
Reviewed-by: gromero, drwhite, dholmes, tschatzl
Contributed-by: Swati Sharma <swatibits14 at gmail.com>

Thanks a lot for reviewing it and sponsoring the change!

Best regards,

> Thanks,
>    Thomas

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