hg: jdk7/hotspot-rt/hotspot: 6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows

John Coomes John.Coomes at oracle.com
Thu Jul 29 16:38:49 PDT 2010

aph at redhat.com (aph at redhat.com) wrote:
> Changeset: 3d90023429ec
> Author:    aph
> Date:      2010-07-28 17:38 +0100
> URL:       http://hg.openjdk.java.net/jdk7/hotspot-rt/hotspot/rev/3d90023429ec
> 6888526: Linux getCurrentThreadCpuTime is drastically slower than Windows
> Reviewed-by: dcubed, dholmes
> ! src/os/linux/vm/globals_linux.hpp
> ! src/share/vm/runtime/arguments.cpp

Hi Andrew,

First, thanks for the fix.

I also want to make sure you're aware of our requirements for pushing
to hotspot, since this looks like something you pushed directly.  All
hotspot changes (even trivial ones) have to go through an automated
build and test system that we call JPRT, which pushes your change only
if all builds and test pass on all platforms.  As of now that system
is only available internally, so in the future when you have a hotspot
change ready, ask on the appropriate hotspot-*-dev list and someone
will submit the changeset for you.  It's worth noting that all hotspot
pushes from oracle engineers go through JPRT.

I realize it's a slight inconvenience, but we had much too frequent
build and test breakage before we required everyone to use JPRT.


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