Hi, On 03.03.2010 13:59, Marcel Reutegger wrote: > hi, > > On Tue, Mar 2, 2010 at 00:06, Felix Meschberger <fmesc...@gmail.com> wrote: >> Hi all, >> >> As of Java 5, the platform provides a big number of information about >> the memory state for the virtual machine. >> >> I have hacked together a Web Console plugin to display the overall >> memory use as well as usage of the different memory pools. The plugin >> also allows for creating heap dumps and for downloading these heap dumps. > > nice. > >> In addition, the plugin ensures, any existing heap dumps are also >> included in the ZIP download of the Configuration Status page. >> >> Finally, the plugin allows for setting a percentage threshold (50-100%) >> of memory usage (Perm Gen and Old Gen). As soon as memory consumption >> crosses the threshold a heap dump is automatically generated (and yes, >> if the threshold is repeatedly crossed, a dump is generated each time >> the threshold is crossed, not just the first time). > > is that configurable? if things go wrong, an application will probably > throw OOME multiple times. that would quickly fill the disk.
Not yet. But I am thinking of adding a switch to prevent dumps from being written in too close succession. For example setting this to "1d" would write a dump only once a day. This could also be used to specify "only dump once and then ignore any further events". Regards Felix > > regards > marcel > >> The plugin requires a trunk build of the Apache Felix Web Console and is >> available from my whiteboard at [1]. >> >> Enjoy and tell me what you think. >> >> Regards >> Felix >> >> [1]http://svn.apache.org/repos/asf/sling/whiteboard/fmeschbe/memoryusage >> >
