Defragmentation needed with FreeBSD ...

Kiffin Gish kiffin at gish.demon.nl
Sun Oct 2 08:58:50 PDT 2005


On Sun, 2005-10-02 at 17:11 +0400, Andrew P. wrote:
> On 10/2/05, Tamouh H. <hakmi at rogers.com> wrote:
> >
> > >
> > > I was just wondering if like in Windows disk fragmentation
> > > arises, and if so then how should one go about defragmenting it?
> >
> > There is no fragmentation in the BSD file systems, that is something related
> > to Windows only. You might want to add the line:
> >
> > fsck_y_enable="YES"
> >
> > to your /etc/rc.conf  in the event fsck finds errors on your disks.
> >
> >
> > _______________________________________________
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> >
> 
> Of course there is fragmentation.
> 
> UFS, particularly its implementation in FreeBSD is
> more intelligent than NTFS/FAT32. When there is
> enough free space on the disk (typically more than
> 15%, see tunefs(8) for details), I/O is automatically
> optimized to minimize fragmentation.
> 
> When your win32 box is idle, but the hdd is scratching
> it's very annoying, because you know that windows
> is swapping something.
> 
> When your bsd box is idle, but the hdd is scratching
> it's quite pleasant, 'cuz that's some hard-working
> daemons make sure that you don't loose any data,
> and always can enjoy the maximum performance.
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So if I understand you correctly, this means that the disk is
defragmented automatically in the background during idle use, e.g. I do
not have to do anything else to enable it because it is already enabled.

Correct?

-- 
Kiffin Gish
Gouda, The Netherlands



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