newfs parameters for a 500 GB volume ?

[Jan Grant]

On Thu, 3 Apr 2003, Heinrich Rebehn wrote:

> Jan Grant wrote:
>
> >On Thu, 3 Apr 2003, Heinrich Rebehn wrote:
> >
> >
> >
> >>Thank you for your reply. I have reread the manpage and would go for:
> >>- blocksize   => 64 kB
> >>- fragsize        => 64/8 => 8 kB
> >>- bytes/inode   => 16 kB
> >>
> >>Are these values reasonable or should i use higher values (because the
> >>disk is so large?)
> >>
> >>
> >
> >I'd turn bytes per inode up to 200k or so - there's a paragraph in "man
> >7 tuning" on this.
> >
> >If the application is critical then benchmarking "real use" as closely
> >as possible will enable you to find optimal sizes for stripes, and is
> >probably time well spent.
> >
> >
> >
> >
> Oh, i had forgotten the tuning(7) manpage. Neiter newfs nore tunefs
> contain a refrence to it!
> Having read it, i am not so sure about the blocksize any more.I
> t says that going higher that 16K can make the fs slower. Does this
> still hold true?

As far as that's concerned, your best bet would be to benchmark the
application you're intending on using and see how it behaves.


-- 
jan grant, ILRT, University of Bristol. http://www.ilrt.bris.ac.uk/
Tel +44(0)117 9287088 Fax +44 (0)117 9287112 http://ioctl.org/jan/
It's a sad fact that the word "semantics" seems to have lost all meaning.