hg: jdk/sandbox: 8216283: Allow shorter method sampling interval than 10 ms

[chris.hegarty at oracle.com]

Changeset: eabe64456156
Author:    egahlin
Date:      2019-06-06 20:19 +0200
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/eabe64456156

8216283: Allow shorter method sampling interval than 10 ms
Reviewed-by: mgronlun

! src/hotspot/share/jfr/periodic/sampling/jfrThreadSampler.cpp
! src/jdk.jfr/share/conf/jfr/default.jfc
! src/jdk.jfr/share/conf/jfr/profile.jfc