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List:       openjdk-serviceability-dev
Subject:    Re: JDK-8153333: [REDO] STW phases at Concurrent GC should count in PerfCounter
From:       Yasumasa Suenaga <yasuenag () gmail ! com>
Date:       2017-07-01 14:44:23
Message-ID: e8d8f095-80cf-40ca-1bf8-fd45eeb7611e () gmail ! com
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PING:

Have you checked this issue?


Yasumasa


On 2017/06/14 13:22, Yasumasa Suenaga wrote:
> Hi all,
> 
> I changed PerfCounter to show CGC STW phase in jstat in JDK-8151674.
> However, it occurred several jtreg test failure, so it was back-outed.
> 
> I want to resume to work for this issue.
> 
> http://cr.openjdk.java.net/~ysuenaga/JDK-8153333/webrev.03/hotspot/
> http://cr.openjdk.java.net/~ysuenaga/JDK-8153333/webrev.03/jdk/
> 
> These changes are work fine on jtreg test as below:
> 
>    hotspot/test/serviceability/tmtools/jstat
>    jdk/test/sun/tools
> 
> 
> Since JDK 9, default GC algorithm is set to G1.
> So I think this change is useful to watch GC behavior through jstat.
> 
> I cannot access JPRT. Could you help?
> 
> 
> Thanks,
> 
> Yasumasa
> 
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