> From: Peter Hargreaves [mailto:[EMAIL PROTECTED]]
>
> Hi Folks,
>
> Its great to see such enthusiasm - thanks for listening. Just got a
> coupe of comments and a simple idea that might help towards the
solution
> - if you scroll down.
>
> Gerhard Froehlich wrote:
<snip/>
> > Maybe I did something wrong. But the idea was that:
> >
> > while(MemoryIsLow) {
> > free objects out of the store //physicall
> > run gc
> > }
> >
> > I run the GC after each "free objects" to clean away
> > does not needed objects!
> >
> > The problem is now, that when he doesn't has anything
> > to free from the registered stores, he runs the GC
> > all the time. And then we have this endless loop!
> >
> > Therefore I should check if the Stores are empty. If they
> > are empty and there is nothing to free anymore we should
> > leave that loop.
>
>
> Is this where you mean:
>
> while (this.memoryLow() && this.getStoreList().size() > 0) {
> this.freeMemory();
> }
>
> I assumed that "this.getStoreList().size()" returned 0 when all the
> stores were empty. If this is not the case (as you suggest) then it
> looks like a permanent loop. I have seen it come out of this loop
> however. Perhaps another thread freed up memory letting the gc become
> successful at breaking out of the loop through "this.memoryLow()".
>
> I saw it break out of the loop when I had the jvm -Xnoclassgc option
> set. With this option classes that haven't been used for a while get
> dropped from memory don't they? So, if stuck in a loop, it won't be
long
> before there are a lot of classes that haven't been used for a while!
> When I saw it come out, it was spectacular - a sudden big drop in
memory
> in use!
>
>
> > >> After that it waits as configured (threadinterval)
> > >> before the next execution.
> > >>
> > >> Maybe there is a more elegent solution.
>
>
> Hava you considered a sort of binary approach to emptying stores?
>
> while (MemoryIsLow) {
> free half of the items in the next store
> run gc
> }
I guess half would be too radical :)
May be something like 1/10th (decimal approach) would do the job better?
Vadim
<snip/>
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, email: [EMAIL PROTECTED]
