> System components should automatically tweak their
> usage based on system hardware configuration. I
> recently read that zfs uses 1GB memory. This does 
> not make our lifes any better. os should constantly
> tweak it's own 
> settings so that we need not look for applications
> for tweaking like 
> we use for windows registry, hard disk for cheking
> and fixing errors and defragmentation
> , etc.

OpenSolaris, Linux, pretty much all operating systems already do this.  I 
currently have Firefox, Emacs, and System Monitor running and I'm using 6.1 GB 
of RAM.  Emacs may be a pig, but I promise it's not that bad :)

The operating system is using the majority of that memory to cache data that I 
might access soon.  If for some reason I need to allocate 5 GB of ram for an 
application it will gladly release that memory from cache and make it available 
for my application.  This is certainly a better system than just letting those 
resources go underutilized.  I hate to be harsh, but as someone else already 
suggested, you need to learn how things work before you start offering up 
suggestions.
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