AggressiveHeap

Has anyone ever experimented with the AggressiveHeap option
(-XX:+AggressiveHeap) option? Looks like it was released with 1.4.2.

Rich

Rich M. wrote:

Has anyone ever experimented with the AggressiveHeap option
(-XX:+AggressiveHeap) option? Looks like it was released with 1.4.2.

My understanding is that AggressiveHeap is for really big heeps, like
gigs of memory, and it’s not suitable for smaller apps. But I’m no GC
expert.

Are you having some scaling issues?

  • Charlie

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We were hitting up against some outofmem issues, but then adjusted the
Xms, Xmx, Xmn, and MaxPermSize and seem to be back in business. I’ve
been playing around with some of the tuning recommendations found in
this white paper ->
http://java.sun.com/performance/reference/whitepapers/tuning.html

Seems to be pretty old (12/2005). Does anyone know of more recent
tuning tips? Might be good to add performance tuning flags inside the
http://wiki.jruby.org/wiki/Performance_Tuning page.

I’ll add our settings once we get them nailed down.

Rich

On Sat, May 10, 2008 at 12:34 AM, Charles Oliver N.

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