RFR (XS) 8210192: Hsperf counter ParNew::CMS should be ParNew:CMS

Stefan Johansson stefan.johansson at oracle.com
Fri Aug 31 10:51:58 UTC 2018


On 2018-08-31 02:07, Man Cao wrote:
> Thanks for the review!
> Should we wait for another "looks good" before JC can submit it?
> 
Yes, we should wait to get a second review.

> Since the testing infrastructure did not catch this change, should we 
> add a test for this hsperf counter?
That would probably be good, please look at the other counter tests and 
create something similar to that. Once you have the test I can apply the 
patch and run it through our test system to make sure it passes on all 
platforms.

Thanks,
Stefan

> 
> PS: I found a better command to test for its value:
> $ jstat -J-Djstat.showUnsupported=true -snap file:///$(pwd)/test.hsperf 
> | grep sun.gc.policy.name <http://sun.gc.policy.name>
> 
> -Man
> 
> 
> On Thu, Aug 30, 2018 at 1:52 AM Stefan Johansson 
> <stefan.johansson at oracle.com <mailto:stefan.johansson at oracle.com>> wrote:
> 
> 
> 
>     On 2018-08-30 02:29, Man Cao wrote:
>      > Hi all,
>      >
>      > I noticed a possible slight naming bug for the HSPerf
>      > counter "sun.gc.policy.name <http://sun.gc.policy.name>
>     <http://sun.gc.policy.name>", introduced by
>      > http://hg.openjdk.java.net/jdk/jdk/rev/170c7b36aea6.
>      >
>      > Basically instead of "ParNew:CMS", the counter's value is now
>     "ParNew::CMS".
>      >
>      > Here is a fix for the bug, could someone review it?
>      >
>      > Webrev: http://cr.openjdk.java.net/~jcbeyler/8210192/webrev.00/
>     <http://cr.openjdk.java.net/%7Ejcbeyler/8210192/webrev.00/>
>      > <http://cr.openjdk.java.net/%7Ejcbeyler/8210192/webrev.00/>
>      > Bug: https://bugs.openjdk.java.net/browse/JDK-8210192
> 
>     Looks good and since the bug hasn't shown up in our testing I don't
>     think fixing it back should be a problem testing wise.
> 
>     Thanks,
>     StefanJ
> 
>      >
>      > PS: Thanks JC for creating the bug and hosting the webrev!
>      >
>      > Thanks!
>      > Man
> 



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