RFR(S) 8212127: Cleanup TLAB fast refill statistics, perf counters and etc.

[zgu at redhat.com]

> 
> No sorry I didn't review it. Not at all familiar with TLAB or these 
> stats. Isn't this more a GC than runtime issue?
> 

I think it is more on GC side, but JDK-8194084 was fixed under Runtime.

Cc'd gc-dev.

Thanks,

-Zhengy

> David
> -----
> 
> > -Zhengyu
> > 
> > 
> > > 
> > > Thanks,
> > > David
> > > -----
> > > 
> > > > 
> > > > Thanks,
> > > > 
> > > > -Zhengyu
> > > > 
> > > > 
> > > > > 
> > > > > David
> > > > > -----
> > > > > 
> > > > > > 
> > > > > > Bug: https://bugs.openjdk.java.net/browse/JDK-8212127
> > > > > > Webrev: http://cr.openjdk.java.net/~zgu/JDK-8212127/webrev.
> > > > > > 00/
> > > > > > 
> > > > > > Test:
> > > > > >      hotspot_runtime, hotspot_serviceability,
> > > > > > vmTestbase_nsk_monitoring,
> > > > > >      vmTestbase_nsk_jdi, vmTestbase_nsk_jvmti,
> > > > > > vmTestbase_vm_jdwp
> > > > > >      on Linux x64
> > > > > > 
> > > > > >      Eyeball output of jsnap
> > > > > > 
> > > > > > Thanks,
> > > > > > 
> > > > > > -Zhengyu
> > > > > >