RFR (S): 8145534: TestRemsetLogging.java takes a long time

[Jon Masamitsu]

Thomas,

http://cr.openjdk.java.net/~tschatzl/8145534/webrev/test/gc/g1/TestRemsetLoggingThreads.java.frames.html

Did you consider adding the -Xint to the execution line above?

http://cr.openjdk.java.net/~tschatzl/8145534/webrev/test/gc/g1/TestRemsetLoggingPerRegion.java.frames.html

Why is the @requires needed above?  It's telling jtreg that 
TestRemsetLoggingPerRegion
needs to be run with G1, right.  Is that really the case?

Rest looks good.

Jon


On 12/16/2015 09:18 AM, Thomas Schatzl wrote:
> Hi all,
>
>    can I have reviews for the following changes to gc/g1/TestRemset*
> tests that decrease its runtime significantly?
>
> Most of the runtime improvements come from using WhiteBox methods to
> start gcs (instead of allocating objects and waiting for it to happen),
> then forcing that test to use the interpreter (because starting up the
> compilers only slows it down), and some measures to improve startup.
>
> In total all this decreases fastdebug VM runtime from 100s to 17s on my
> local machine.
>
> The changes also add @requires tags and deletes equivalent java code.
>
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8145534
> Webrev:
> http://cr.openjdk.java.net/~tschatzl/8145534/webrev/
> Testing:
> looking at run times of jprt jobs which are much better now. There is
> still some variation, but they are in the same range as other tests now.
>
> Thanks,
>    Thomas
>
>