Re: defragment streamed audio on clean HD?
- From: "Gerry" <gerry@xxxxxxxxxx>
- Date: Sun, 17 Jun 2007 20:56:40 +0100
Adam
The causes of fragmentation are not always as one might expect,
especially so for the system partition. If you run Disk Defragmenter so
that there is no fragmentation and then reboot a system partition will
become partially fragmented, even by doing nothing other than restarting
the computer. This is because settings are saved on shutdown and logs
are written when you boot. The degree of fragmentation may be small but
it occurs. The situation matters little unless large files are being
written to disk and there is limited free disk space. The more files are
fragmented the more free space becomes fragmented which in turn means
that any files written will inevitably be fragmented. People say
separate system from data files. Actually it helps to separate files
always being rewritten from those changed less frequently.
I have used a shared pagefile partition and it caused no problems.
You need to keep an eye on System Restore with regard to an external
removable disk. Whilst System Restore can be set not to monitor be
careful if you remove the disk and put it back later that it does not
start monitoring the disk. You can end up with a situation that you
cannot go back to an earlier restore point when you thought you could.
--
Hope this helps.
Gerry
~~~~
FCA
Stourport, England
Enquire, plan and execute
~~~~~~~~~~~~~~~~~~~
"Adam Skeaping" <adamskeaping@xxxxxxxxxxxxxxx> wrote in message
news:2C6391AC-6F03-43F0-AA30-F368B7BB177C@xxxxxxxxxxxxxxxx
Many thanks for those thoughts. I know the pagefile is not optimally
placed,
but my disk setup is more complicated than I dared to admit in my last
post;
I didn't want to take up too much message space....
There are two more hidden partitions I did not mention, each one
contains an
alternatively set up Windows & Program Files set-up I can choose to
boot
into, in which case the other boot partitions are hidden; so to save
space on
the disk, all 3 systems dump their pagefile into the same
always-visible
partition. However, I'll take your advice and put a small pagefile in
each
system partition until I can install another disk for the main
pagefile.
System restore ignores the audio disk, which is in a removable cage,
and
since the computer can boot without it, I don't allocate it for a
pagefile.
The recycle bin on all drives is empty. Don't forget that I get
exactly the
same fragmentation on audio files on an external firewire or USB drive
which
has just been re-formatted.
Post-anaysis report shows 10 wav files all about 600MB. 5 of them
were
written at about 4x real time and are made up of about 1,800 fragments
each,
and the other 5 were written at about 12x speed and are made up of
about
3,600 fragments each, so the quicker they were written, the more
fragmented
they were. One of the 4 folders is shown as fragmented; excess folder
fragments=1. I'd forgotten it was possible to get a report BEFORE
defragmenting, so thanks for reminding me.
I'm beginning to think I'll just defragment the damn drive and stop
worrying
why this is happening.
Later on, when I've got a bit more time I'll investigate all this more
thoroughly...
"Gerry" wrote:
Adam
I cannot answer your question but I can make some points which should
be
considered.
You second hard drive is unlikely to contain only wav audio files.
Unless you have
disabled System Restore from monitoring the drive the Volume
Information
Folder
will contain restore points and even if System Restore has been
turned
off there
will still be the Folder and one or two small files. Also there will
still be a Recycle
Bin and an MFT table.
Andrew E is wrong about the pagefile. However your partitioning with
regard to the
pagefile does not conform to accepted good practice. You should keep
a
small
pagefile in the system partition i.e. say 50 mb -perhaps you have?
The
main pagefile,
if placed in it's own partition, should be the first partition on the
second hard drive not
in the location where you have it.
When you view the Disk Defragmenter Report after Analyse but before
defragmenting
what files are listed as Most Fragmented? Note the MFT file is never
listed. Also how
many folders are listed as fragmented after running Disk
Defragmenter?
It should be
none. Hoewever the MFT table will be in 2 fragments. The MFT table
can
be in 3
fragments in a system partition. With a system partition you will
usually get some other
system folders which remain fragmented. Thus it is normal for the
pagefile to be in
fragmented although it is possible to get the pagefile in a system
partition to be
contiguous.
--
Hope this helps.
Gerry
~~~~
FCA
Stourport, England
Enquire, plan and execute
~~~~~~~~~~~~~~~~~~~
"Adam Skeaping" <adamskeaping@xxxxxxxxxxxxxxx> wrote in message
news:A5231A44-0B89-4084-8CD8-A26675780E51@xxxxxxxxxxxxxxxx
Thanks for reply Andrew, but it doesn't address my problem, because
I
didn't
provide enough background information.
I have 2 drives on my system. IDE drive 0 is NTFS partitioned as
follows: 1)
system & program files, 2) pagefile only, 3) general day-to-day
files. But
my fragmentation problem lies with IDE drive 1, a single NTFS
partition
containing ONLY .wav audio files. I also get the same
fragmentation
problem
with audio and video files streamed or copied to a freshly
formatted
external
firewire drive.
.
- References:
- Re: defragment streamed audio on clean HD?
- From: Gerry
- Re: defragment streamed audio on clean HD?
- From: Adam Skeaping
- Re: defragment streamed audio on clean HD?
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