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
Mike
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