Re: [gentoo-user] Fragmentation of my drives. Curious mostly

[Dale]

Florian Philipp wrote:
> Alan McKinnon schrieb:
> [...]
>> Reiser tends to self-balance itself out. What is especially
>> noteworthy is that none of the general purpose Linux filesystems
>> provide a defrag utility. Theodore 'Tso and Hans Reiser are both
>> exceptional programmers, if there was a need for such a tool they
>> would assuredly have written one. They did not, so there probably isn't.
>>
> [...]
>
> Well, as far as I know, ext4 will get an online defrag tool.
>
> I once experienced performance losses on a reiserfs-volume used for
> ccache (tailpacking enabled).
>
> But otherwise you are right, fragmentation is usually caused by a bad
> filesystem (FAT*), a filesystem that is mostly filled (when 99% is
> full, the allocator has no choice but scatter any new writes over the
> whole volume) or unusual usage patterns (write-delete-write-delete-...
> like my ccache issue).
>
>


I have read the same as what you are saying but I did want to "test"
that shake thing.  What is funny to me, it was higher AFTER running a
defrag tool than it was BEFORE running it.  Sort of makes you think.

I have said myself that Linux does not generally need to be defraged.  I
have never seen a Linux file system get anything near as bad as
windoze.  While I don't run windoze I do have family and friends that do
so I know how bad it can be.  I have seen a lot of windoze be at 40 and
50%.  Looked like about every file on the thing was all over the place
like bird shot from a shot gun.  Sorry, I'm a southern country boy.  lol

So I assume 10% or so is not so bad?  I didn't think it was but wanted
to ask a couple gurus for their opinions.

Thanks for the replies.

Dale

:-)  :-)