Re: NTFS fragmentation

[Vladimir Dergachev <vdergachev at rcgardis dot com>]

On Thursday 03 August 2006 5:18 am, Dave Korn wrote:
> On 03 August 2006 00:46, Vladimir Dergachev wrote:
>
>
>     Hi Vladimir,
>
> >>> Please CC me - I am not on the list.
>
>   Done :)
>

>   Actually, maybe the most informative thing would be to look at the device
> IO controls sent by both testcases, using filemon or similar.

Thank you for the suggestion !

I used filemon and discovered that all three programs (ntfs_test.tcl, Firefox 
and IE) use sequential access, but IE writes the file first to Temporary 
Internet Files folder and then copies it.

If one runs analyze from defragmenter while IE is still downloading the file 
the file in the Temporary Internet Files folder is just as fragmented as 
other files.

I guess this means that sequential writes are officially broken on NTFS.

Anyone has any idea for a workaround ? It would be nice if a simple
tar zcvf a.tgz * does not result in a completely fragmented file.

                              thank you

                                  Vladimir Dergachev

>
>
>     cheers,
>       DaveK



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