loss of cause??

Pierre Laporte pierre at pingtimeout.fr
Thu Oct 10 14:23:32 UTC 2013


Oh I did not know that one.

When I tested with 1.8.0_b99, the cause was printed by default, which
suggests that the flag is automatically turned on with PrintGCDetails. But
it does not look like this is 1.8.0_40. What is going to be the "enabled
policy" for this flag in the future ?


On Thu, Oct 10, 2013 at 4:00 PM, Mikael Gerdin <mikael.gerdin at oracle.com>wrote:

> On 10/10/2013 03:46 PM, Pierre Laporte wrote:
>
>> This is also true for Linux :
>> http://www.pingtimeout.fr/**2013/08/gc-log-format-change.**html<http://www.pingtimeout.fr/2013/08/gc-log-format-change.html>
>>
>
> If you want the GC causes for all gcs in 7u40 please use -XX:+PrintGCCause
>
> /Mikael
>
>
>>
>> On Thu, Oct 10, 2013 at 3:30 PM, Kirk Pepperdine <kirk at kodewerk.com
>> <mailto:kirk at kodewerk.com>> wrote:
>>
>>     Hi all,
>>
>>     I've just noticed this in a GC log.
>>
>>     642.015: [Full GC [PSYoungGen: 1904K->0K(79360K)] [ParOldGen:
>>     337438K->338524K(442368K)] 339342K->338524K(521728K) [PSPermGen:
>>     13239K->13239K(21504K)], 4.4455297 secs] [Times: user=7.94 sys=0.02,
>>     real=4.44 secs]
>>
>>
>>     This collection was triggered by a call to System.gc().
>>
>>     More info
>>     D:\dev\>"C:\Program Files\Java\jdk1.7.0_40\bin\**java" -version
>>     java version "1.7.0_40"
>>     Java(TM) SE Runtime Environment (build 1.7.0_40-b43)
>>     Java HotSpot(TM) 64-Bit Server VM (build 24.0-b56, mixed mode)
>>
>>     Flags used -Xloggc:gc.log -XX:+PrintGCDetails
>>
>>
>>     Same app running in OSX produces;
>>
>>     2.435: [Full GC (System) [PSYoungGen: 32K->0K(24064K)] [ParOldGen:
>>     3666K->3666K(54976K)] 3698K->3666K(79040K) [PSPermGen:
>>     9620K->9620K(22272K)], 0.0311970 secs] [Times: user=0.06 sys=0.00,
>>     real=0.03 secs]
>>
>>     Obviously triggered by a full GC
>>
>>     flash-2:kirk$ java -version
>>     java version "1.7.0_40"
>>     Java(TM) SE Runtime Environment (build 1.7.0_40-b43)
>>     Java HotSpot(TM) 64-Bit Server VM (build 24.0-b56, mixed mode)
>>
>>     Flags used -Xloggc:gc.log -XX:+PrintGCDetails
>>
>>     I've not checked for this on Linux yet.
>>
>>     So, it looks as though the (System) has been lost on windows?
>>
>>     Regards,
>>     Kirk
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> --
>>
>> Pierre Laporte
>> @pingtimeout <https://twitter.com/**pingtimeout<https://twitter.com/pingtimeout>
>> >
>> pierre at pingtimeout.fr <mailto:pierre at pingtimeout.fr>
>> http://www.pingtimeout.fr/
>>
>
>


-- 

Pierre Laporte
@pingtimeout <https://twitter.com/pingtimeout>
pierre at pingtimeout.fr
http://www.pingtimeout.fr/
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