6941923: RFE: Handling large log files produced by long running Java Applications

Daniel D. Daugherty daniel.daugherty at oracle.com
Mon Sep 12 06:37:37 PDT 2011


Just an administrative FYI. Bug ID 6941923 has already been
used to push a fix to the HotSpot repo:

http://hg.openjdk.java.net/hsx/hotspot-gc/hotspot/rev/2a241e764894

so it cannot be used again in the HotSpot repo. If this work
is going to move forward, then a new bug ID will be needed.

Dan


On 9/11/11 7:18 PM, Yasumasa Suenaga wrote:
> Hi,
>
> I'm using "logrotate" tool on RHEL for various log rotation.
> Now, HotSpot has gclog rotation function for log size base.
> However, I need to rotate gc log synchronizing with logrotate tool.
>
>
> So, I've made a patch for executing gclog rotation from external tool.
>
>
>  * Changes in HotSpot (hotspot.patch):
>   * gclog rotation request is received via AttachListener.
>   * logrotation function ( rotatingFileStream::rotate_log() ) has
>     1 parameter. It's determined that gclog rotation is forced or not.
>   * HotSpot allows "GCLogFileSize == 0" . Because we can rotate gclog
>     via external tool.
>
>  * Changes in JDK (jdk.patch):
>   * gclog rotation is invoked via "jinfo" command with "-rotategclog"
>     option.
>   * With "-rotategclog -force" option, gclog is rotated mandatorily.
>   * "jinfo" is executed "rotategclog" command in AttachListener on
>     target JVM.
>
>
> I've attached these patch in this email. Please check it.
>
> I would like to contribute this patch, and I hope to apply this patch to
> JDK 6 / 7 / 8.
>
>
> Please cooperate.
>
> Best regards,
> Yasumasa
>


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