Expert help - Pavilion dv3 - memory allocation

Question

Hi there,
Recently I bought a dv3 - 4031TX
Out of the 4GB ram recognised by the system, only 2.4 is available and Win7 has used up half of that.
Upon checking the resource monitor, 1.6GB is set to be hardware reserved. Has that gone to the graphics card?
Since I won't do any gaming, would there be a way to reallocate the memory for system?
I called up hp and the person told me this is just how the hardware is built without giving me a more accurate answer.
Would be great if someone can accurately tell me where the 1.6GB has gone.
Thank you!
Josh

Answer 1

Hi! Thanks for the reply,
After much googling we've finally found a stable configuration.
java.args=-server -Xmx768m -Xss64k -Dsun.io.useCanonCaches=false -XX:MaxPermSize=512m -XX:+UseParallelGC -Dcoldfusion.rootDir={application.home}/ -verbose:gc -Xloggc:c:/Jrun4/logs/gc/gcInstance1b.log
I tried playing with the survivor ratio but came back to the default when I didn't notice much improvement.  In the end what did it (pretty sure) is -Xss to reduce the requests size living on the stack.  Our large initial heap, perm + overhead combined with the default request size was causing the JVM to go over and blow up I think.
We've been stable for over a month now, the next step for us is to reduce the MaxPermSize a little at a time to find our optimal range.