(Slightly OT) Telling exactly which objects get promoted
David.Holmes at oracle.com
Thu Apr 8 03:56:17 PDT 2010
At the risk of stating the obvious take a look at the various tools
mentioned in the troubleshooting guide:
jconsole, jhat, VisualVM ....
Hopefully one of those can assist.
Ben Evans said the following on 04/08/10 20:26:
> Apologies if this is too off-topic, or is covered in a document which my
> Google-Foo has been insufficient to locate so far.
> I have an application which is displaying an odd collection pattern on
> large heaps (3G on a 32-bit 6u18). Broadly, all our objects are
> sufficiently short-lived that we don't expect any of them to survive to
> tenure, and yet a small amount of them seem to, so over time we are
> unable to completely avoid full collections.
> We would like some tool or JVM setting which would allow us to see
> exactly which objects (or failing that, their classes) are reaching
> tenure. Can anyone suggest something suitable, or some docs?
> Ben Evans
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