From david.holmes at oracle.com  Wed Aug 16 21:12:34 2017
From: david.holmes at oracle.com (David Holmes)
Date: Thu, 17 Aug 2017 07:12:34 +1000
Subject: CSR workflow?
Message-ID: <59648cf8-9c16-f76f-83a6-2f7487b8c53c@oracle.com>

The wiki still lacks details on the CSR workflow. I'm seeing CSR 
requests being moved from Draft to Proposed with no Reviewers - is that 
valid?

Thanks,
David

From david.holmes at oracle.com  Wed Aug 16 21:19:07 2017
From: david.holmes at oracle.com (David Holmes)
Date: Thu, 17 Aug 2017 07:19:07 +1000
Subject: CSR workflow?
In-Reply-To: <59648cf8-9c16-f76f-83a6-2f7487b8c53c@oracle.com>
References: <59648cf8-9c16-f76f-83a6-2f7487b8c53c@oracle.com>
Message-ID: <4b7edcc7-c93a-32a1-3843-e6c4ccb0e257@oracle.com>

On 17/08/2017 7:12 AM, David Holmes wrote:
> The wiki still lacks details on the CSR workflow. I'm seeing CSR 
> requests being moved from Draft to Proposed with no Reviewers - is that 
> valid?

To answer myself - yes that is valid.

However it is unclear exactly when a Reviewer must be provided by - 
finalized?

It is also unclear how a Proposed CSR request actually advances ie who 
does what next?

Thanks,
David

> Thanks,
> David

From joe.darcy at oracle.com  Fri Aug 18 07:18:35 2017
From: joe.darcy at oracle.com (joe darcy)
Date: Fri, 18 Aug 2017 00:18:35 -0700
Subject: CSR workflow?
In-Reply-To: <4b7edcc7-c93a-32a1-3843-e6c4ccb0e257@oracle.com>
References: <59648cf8-9c16-f76f-83a6-2f7487b8c53c@oracle.com>
 <4b7edcc7-c93a-32a1-3843-e6c4ccb0e257@oracle.com>
Message-ID: <90624424-e136-dd5f-c4e0-9d8e925c16e0@oracle.com>

Hi David,

Fair points; I'll update the wiki next week to address them.

Cheers,

-Joe


On 8/16/2017 2:19 PM, David Holmes wrote:
> On 17/08/2017 7:12 AM, David Holmes wrote:
>> The wiki still lacks details on the CSR workflow. I'm seeing CSR 
>> requests being moved from Draft to Proposed with no Reviewers - is 
>> that valid?
>
> To answer myself - yes that is valid.
>
> However it is unclear exactly when a Reviewer must be provided by - 
> finalized?
>
> It is also unclear how a Proposed CSR request actually advances ie who 
> does what next?
>
> Thanks,
> David
>
>> Thanks,
>> David


From HORIE at jp.ibm.com  Tue Aug 29 09:55:08 2017
From: HORIE at jp.ibm.com (Michihiro Horie)
Date: Tue, 29 Aug 2017 18:55:08 +0900
Subject: RFR(M) 8186888: Need a full GC when old area is expanded
Message-ID: <OF642987A2.80BBFD68-ON0025818B.00356D8B-4925818B.00367CA9@notes.na.collabserv.com>


Dear all,

Would you please review the following change?
CSR: https://bugs.openjdk.java.net/browse/JDK-8186888
Bug pointing to CSR: https://bugs.openjdk.java.net/browse/JDK-8186834
Webrev: http://cr.openjdk.java.net/~mhorie/8186834/webrev.00/


As additional data, following is a simple micro benchmark I used to see the
benefit of this change. As a result, pause time of full GC reduced by 30%.
Full GC count reduced by 54%. Elapsed time reduced by 7%.

import java.util.HashMap;
import java.util.Map;
public class HeapExpandTest {
  static Map<Integer, byte[]> map = new HashMap<>();
  public static void main(String[] args) throws Exception {
    long start = System.currentTimeMillis();
    for (int i = 0; i < 2200; ++i) {
      map.put(i, new byte[1024*1024]); // 1MB
    }
    System.out.println("elapsed= " + (System.currentTimeMillis() - start));
  }
}

JVM options: -XX:+UseParallelGC -XX:+UseAdaptiveSizePolicy
-XX:ParallelGCThreads=8 -Xms64m -Xmx3g
-XX:+UseAdaptiveGenerationSizePolicyBeforeMajorCollection
UseAdaptiveGenerationSizePolicyBeforeMajorCollection is the option I added
in this change.

Best regards,
--
Michihiro,
IBM Research - Tokyo