RFR: 7463: JfrEditor instances are kept in memory by NavigationHistory
Marcus Hirt
hirt at openjdk.java.net
Tue Nov 30 18:16:09 UTC 2021
On Tue, 30 Nov 2021 10:48:47 GMT, Jean-Philippe Bempel <jpbempel at openjdk.org> wrote:
> Provide a sub class of NavigationHistory instead of implementing a
> full INavigationHistory.
> JfrEditor is not kept anymore when releasing state/disposing.
>
> Provide a sub class of NavigationHistory instead of implementing a
> full INavigationHistory.
> JfrEditor is not kept anymore when releasing state/disposing.
>
> JMC 8.1, opening 13 recordings, then closing them:
>
> COMP11909:~/git/jmc-jpbempel$ jcmd 55089 GC.heap_info
> 55089:
> garbage-first heap total 989184K, used 488772K [0x0000000700000000, 0x0000000800000000)
> region size 1024K, 1 young (1024K), 0 survivors (0K)
> Metaspace used 60486K, capacity 65423K, committed 65584K, reserved 1105920K
> class space used 6822K, capacity 8453K, committed 8576K, reserved 1048576K
> COMP11909:~/git/jmc-jpbempel$ jcmd 55089 GC.run
> 55089:
> Command executed successfully
> COMP11909:~/git/jmc-jpbempel$ jcmd 55089 GC.heap_info
> 55089:
> garbage-first heap total 989184K, used 488410K [0x0000000700000000, 0x0000000800000000)
> region size 1024K, 1 young (1024K), 0 survivors (0K)
> Metaspace used 61621K, capacity 66457K, committed 66736K, reserved 1107968K
> class space used 6938K, capacity 8583K, committed 8704K, reserved 1048576K
>
> memory is not released even after GC
>
> JMC 8.2 + fix:
>
> COMP11909:~/git/jmc-jpbempel$ jcmd 56259 GC.heap_info
> 56259:
> garbage-first heap total 1625088K, used 556392K [0x0000000700000000, 0x0000000800000000)
> region size 1024K, 1 young (1024K), 0 survivors (0K)
> Metaspace used 61931K, capacity 66724K, committed 66992K, reserved 1107968K
> class space used 6991K, capacity 8586K, committed 8704K, reserved 1048576K
> COMP11909:~/git/jmc-jpbempel$ jcmd 56259 GC.run
> 56259:
> Command executed successfully
> COMP11909:~/git/jmc-jpbempel$ jcmd 56259 GC.heap_info
> 56259:
> garbage-first heap total 109568K, used 28592K [0x0000000700000000, 0x0000000800000000)
> region size 1024K, 1 young (1024K), 0 survivors (0K)
> Metaspace used 62269K, capacity 67053K, committed 67248K, reserved 1107968K
> class space used 6994K, capacity 8588K, committed 8704K, reserved 1048576K
Do we want to keep the ability to open on the right page?
-------------
PR: https://git.openjdk.java.net/jmc/pull/338
More information about the jmc-dev
mailing list