Disk defragmenter in Linux

Mike McCarty mike.mccarty at sbcglobal.net
Fri Dec 30 16:01:39 UTC 2005

jdow wrote:
> From: "Mike McCarty" <mike.mccarty at sbcglobal.net>
>>> The fragmentation for your emacs is unbelievably high. I did not find 
>>> anything yet fragmented in the hundreds, let alone several hundred 
>>> extents. Are you using LVM? My system is setup in traditional 
>>> partitions. LVM usage "seemed" slower in responsiveness, so I assumed 
>>> it was more in fragments
>> Why "unvelievably"? Do you mean that you do not believe what my
>> system says? Or that you do not believe my e-mail? Or that you
>> find that it stretches your imagination? Or what?
> Perhaps this is an Americanism. It is higher than one would believe

Well, though my first language is not English, it is my preferred
language, which I've been speaking since I was about 4 or so.
And I was born in and grew up in the USA. Native Texican.

> in a "fantasy story" but perforce must believe when seen in real life.

This is what I meant by "stretches your imagination".

> It does seem rather ridiculously or unbelievably or unrealistically or 
> fish story high. But you have the numbers right in front of you.
> So unbelievable or not it can happen. It certainly is fascinating
> that it has.

I was, well, shocked. OTOH, someone stated that extents and
fragmentation are not the same, as different extents may
well be contiguous on disc.

> How full is that file system?
> {^_^}

$ df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/hda5              7633264   4681896   2563620  65% /
/dev/hda3                99075     24602     69358  27% /boot
none                    124044         0    124044   0% /dev/shm

Hmm, anyone can explain what /dev/shm is? And why it's 62MB?
This is a dual-boot WinXP/Linux.

# fdisk -l

Disk /dev/hda: 40.0 GB, 40020664320 bytes
16 heads, 63 sectors/track, 77545 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes

    Device Boot      Start         End      Blocks   Id  System
/dev/hda1               1        8625     4346968+   b  W95 FAT32
Partition 1 does not end on cylinder boundary.
/dev/hda2   *        8626       60915    26354160    7  HPFS/NTFS
Partition 2 does not end on cylinder boundary.
/dev/hda3           60916       61118      102312   83  Linux
Partition 3 does not end on cylinder boundary.
/dev/hda4           61119       77545     8279208    f  W95 Ext'd (LBA)
Partition 4 does not end on cylinder boundary.
/dev/hda5           61119       76505     7755016+  83  Linux
/dev/hda6           76506       77545      524128+  82  Linux swap

This message made from 100% recycled bits.
You have found the bank of Larn.
I can explain it for you, but I can't understand it for you.
I speak only for myself, and I am unanimous in that!

More information about the fedora-list mailing list