Re: which PC


"Floyd L. Davidson" <floyd@xxxxxxxxxx> wrote in message
news:87ejk8ksos.fld@xxxxxxxxxxxxx
"dennis@home" <dennis@xxxxxxxxxxxxxxxxxxxxxx> wrote:
"Floyd L. Davidson" <floyd@xxxxxxxxxx> wrote:

I would have to agree at least in part.. you don't need to defrag a disk
(note disk not file system as a file system may not be on a disk).
You don't even have to defrag windows.

However there /is/ a performance boost from defraging a file system.

Only if you have a very poorly designed filesystem.
*Very* poorly designed.

You don't understand file system.

I understand filesystem and that he was talking about disk based
filesystems.
Disks are faster if you can stream the file without having to do seeks..
without defragging and compaction you will end up with files that require
seeks and it will slow the system down.

Yep, you don't understand filesystems. (Or harddisks
either!)

OK.
Explain to me what happens on your mythical file system when it is nearly
full say 1G space and someone writes say 1G to it.
Then deletes 1G of small files.
Then writes a 1G files and repeats this a few times.
Are the 1G files now fragmented?
Does the disk have to do more seeks to stream one of these files.

Now tell me you understand filesystems and disks.


The only systems where this isn't true are specialised ones like some
databases use and even then the database will have some sort of
optimisation
built in.

There is no need for defragmentation on any of the
modern filesystems that have been designed for unix
based systems.

I agreed with you on that why are you restating it?


Windows filesystems are the only ones that require it.

NTFS doesn't need to be defragged but like *all* common file systems you can
get a performance increase if you do compact it.
(Now wait for the argument that defrag and compact are different.)


.

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