RFR (XS): 8216366: Add rationale to PER_CPU_SHARES define

[Bob Vandette]

I don’t know how folks feel about embedding possible bit-rotting URLs in the sources but
it looks good to me.  

Thanks for doing this.

Bob.


> On Jan 8, 2019, at 8:22 AM, Severin Gehwolf <sgehwolf at redhat.com> wrote:
> 
> Hi,
> 
> Could I get reviews for this comment-only change, please. It's meant to
> clarify as to why a magic number of 1024 is being used for
> PER_CPU_SHARES define for the JVM container support.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8216366
> webrev: http://cr.openjdk.java.net/~sgehwolf/webrevs/JDK-8216366/webrev.01/
> 
> More info is in this thread:
> http://mail.openjdk.java.net/pipermail/hotspot-dev/2019-January/036087.html
> 
> Thanks,
> Severin
>