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Subject: Re: Impact of disk performance in endgames

Author: john rice

Date: 11:05:26 07/15/02

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I use two Maxtor 40Gig ATA133 drives in a Raid 0 configuration and get
outstanding performance with it. Slater, if you get a chance try running the Si
Soft Sandra 2002 (freeware) hard drive bench mark with your scsi drive. I'm
courious if it is faster than my Raid set-up. My average benchmark score is
48,000kB/s.

On July 15, 2002 at 11:44:01, Slater Wold wrote:

>On July 15, 2002 at 10:59:04, Robert Hyatt wrote:
>
>>On July 15, 2002 at 08:57:13, Gordon Rattray wrote:
>>
>>>I currently use Fritz, etc. to analyse a lot of endgame positions.  During the
>>>search there is often a large amount of tablebase hits (I'm currently using all
>>>5 man TBs with a 32Mb TB cache).  It regularly seems that the disk access speed
>>>is more of a bottleneck than the processor.
>>>
>>>Should I consider using a faster disk (I'm currently using a 7200rpm IDE drive)?
>>> Will it be worth it?  Should I use SCSI instead of IDE?
>>>
>>>thanks in advance
>>>
>>>Gordon
>>
>>
>>SCSI is definitely better.  10K and 15K drives are also definitely
>>faster...  The probes are I/O intensive, so anything you can do to
>>reduce I/O costs will help the engine.  This includes a larger Cache
>>also, of course.
>
>I went from a WD 7200 RPM IDE drive to a Fuji 10K SCSI drive, and saw consistant
>15-20 percent gains in the search of half a dozen engines.



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