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Subject: Re: Compressing disk and chess programs perfomance

Author: Jeremiah Penery

Date: 09:12:44 01/20/00

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On January 20, 2000 at 04:39:38, Dave Gomboc wrote:

>On January 20, 2000 at 03:30:03, Jeremiah Penery wrote:
>
>>I can say that for native NTFS (WinNT) disk compression, there was no noticable
>>impact on performance for any program.  I had things like TBs (Edwards)
>>compressed, and performance wasn't slowed at all.  Before Nalimov compression, I
>>had those compressed that way also, with no noticable performance hit.
>>I think NTFS compression is a bit conservative, though, and if you use something
>>else, performance might be a bit less. YMMV. :)
>>
>>Jeremiah
>
>Probably NTFS was smart enough to detect that it couldn't recompress the data,
>and consequently left the actual data alone.  Some compression implementations
>are not so clever.

For which data?  NTFS compressed the uncompressed Nalimov TBs from a total of
~22GB to about 10GB.  The Edwards TBs were compressed from 2.5GB to about 1GB,
IIRC.



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