[Patch] ParallelGC: Improve AlwaysPreTouch with multiple threads

stefan.johansson at oracle.com stefan.johansson at oracle.com
Fri Aug 21 11:48:17 UTC 2020


Hi Amit,

Now the patch made it through =)

Me or somebody else from the GC-team will provide feedback once we find 
time to look at the patch.

Thanks for reaching out,
Stefan

On 2020-08-21 13:39, amith pawar wrote:
> Hi Stefan,
> 
> Thanks for replying. First time got rejected and then resent it after 
> subscribing to the group. Not sure how this happened.
> 
> I am attaching again. Please do check.
> 
> Thanks,
> Amit Pawar
> 
> On Fri, Aug 21, 2020 at 1:29 PM <stefan.johansson at oracle.com 
> <mailto:stefan.johansson at oracle.com>> wrote:
> 
>     Hi Amit,
> 
>     Your patch did not make it to the list. It might have been stripped.
>     Are
>     you subscribed to the list? That might be required to attach patches.
> 
>     Thanks,
>     Stefan
> 
>     On 2020-08-20 19:33, amith pawar wrote:
>      >   Hi,
>      >
>      > Currently AlwaysPreTouch for ParallelGC is done with a single
>     thread and
>      > this attached patch converts it to multithreaded similar to other
>     GCs.
>      >
>      > All JTREG tests passed without new failures.
>      >
>      > Time taken for pretouch on EPYC server with 1TB memory and 128
>     threads
>      > Before fix: ~107 s
>      > After fix   :  ~14 s
>      >
>      > Please review this attached patch and give your feedback.
>      >
>      > Thanks,
>      > Amit Pawar
>      >
> 
> 
> 
> -- 
> With best regards,
> amit pawar


More information about the hotspot-gc-dev mailing list