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From "Guillaume Nodet (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KARAF-5628) Corrupt gc.log due to unseparated VM settings
Date Thu, 15 Mar 2018 14:45:00 GMT

    [ https://issues.apache.org/jira/browse/KARAF-5628?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16400500#comment-16400500
] 

Guillaume Nodet commented on KARAF-5628:
----------------------------------------

[~riconeubauer] feel free to work on a PR, that would definitely help speed things up !

> Corrupt gc.log due to unseparated VM settings
> ---------------------------------------------
>
>                 Key: KARAF-5628
>                 URL: https://issues.apache.org/jira/browse/KARAF-5628
>             Project: Karaf
>          Issue Type: Bug
>          Components: karaf-core
>            Reporter: Rico Neubauer
>            Assignee: Jean-Baptiste Onofré
>            Priority: Major
>
> The VM properties used for the start, stop, status and client scripts all use one common
configuration of the VM properties, like Xmx and GC settings.
> This has one particular issue when activating the gc.log (-Xloggc:gc.log with Oracle-VM):
Invoking e.g. status while Karaf is running, uses the same settings, thus points to the same
file and corrupts it with NUL values (see here for details: [Stackoverflow|[https://stackoverflow.com/questions/8353401/garbage-collector-log-loggc-file-rotation-with-logrotate-does-not-work-properl]]
).
>  
> I would like to request the possibility to configure the VM properties for starting the
instance independently from the maintenance scripts - due to the issue and also since e.g.
running status with lots of heap (if instance is configured to it) is unneeded.
>  
> Even making it broader, I think it would also make sense to be able to configure the
settings completely, since currently some things are hard-coded in the scripts, like the _-Xdum_p
and _-Xlp_ settings  for AIX, where I personally would like to configure it to _-Xdump:heap:events=gpf,opts=PHD_,
which is currently not possible using the configuration only. Also especially for AIX, there
is _LDR_CNTRL=MAXDATA=0xB0000000@DSA_, which might not be desired when running with heaps
larger than 3GB.
>  
> If you agree on a separation, I would make a proposal as PR. Please let me know.



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