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  #1 (permalink)  
Old 23rd November, 2003, 03:42 PM
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VIA RAID patch & 8K5A2+

Hi,

the VIA page says that the RAID patch is not necessary for boards with the VT8235 southbridge. So is that true ?

I've read an article in which the author says that only a few mobos with the VT8235 do activate the "bus parking" (which is responsible for a performance boost). Does the 8K5A2+ activate this feature ?

Thx in advance ...
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Old 24th November, 2003, 02:34 PM
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DO you have a link to the article in question that you have read ?
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Old 24th November, 2003, 02:50 PM
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Quote:
Originally Posted by EPoX Tech
DO you have a link to the article in question that you have read ?
Little ... is it a classified information ? Hope you understand german:

http://www.tecchannel.de/hardware/1053/index.html
... respectively ...
http://www.tecchannel.de/hardware/1053/8.html

Addendum: the well known "breese patch" seems to set the "PCI bus parking" for VIA boards manually. The docs of this patch also describe the problem !
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Last edited by dpr; 24th November, 2003 at 02:58 PM.
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Old 24th November, 2003, 02:58 PM
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The information in there is only respective of ....

1. Another manufacturers mainboard
2. A mainboard manufactured by an OEM on behalf of the chipset vendor
3. Mainboards manufactured using another chipset with different behaviours

This cannot be pointed at the known good performance of our product to which you refer since it is not a direct test of this product.
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Old 24th November, 2003, 03:16 PM
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Quote:
Originally Posted by EPoX Tech
[...]This cannot be pointed at the known good performance of our product to which you refer since it is not a direct test of this product.
It's correct that the article doesn't refer to the 8K5A2+. But the article describes ALL VIA boards with VT8235 southbridges. The author says that a lot of VIA boards (regardless of which manufacturer) don't activate the "bus parking".

So my simple question is: does the 8K5A2+ BIOS activate "bus parking" or does it not ? In other words: do we need sth. like the "VIA RAID patch" or the "breese patch" or don't we need 'em ?

Thanks for your answer in advance.
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Old 24th November, 2003, 03:18 PM
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What are your results with and without the PFD patch ?
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Old 24th November, 2003, 04:53 PM
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It seems that you do like counterquestions

However - I can't see a significant performance increase with the PFD driver. So could you pleeeeeeeeeeeeeeeeease answer to my question.

I'm actually searching for the reason why my RAID-0 performance is too low. So I just want to exclude a few things.
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Old 24th November, 2003, 05:34 PM
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Quote:
Originally Posted by dpr
It seems that you do like counterquestions

However - I can't see a significant performance increase with the PFD driver. So could you pleeeeeeeeeeeeeeeeease answer to my question.

I'm actually searching for the reason why my RAID-0 performance is too low. So I just want to exclude a few things.
Some time ago, someone posted on Planet3DNow that it is not activated by default. He also showed how to activate it with a certain tool. I'll have to look it up at home.
I did this patch and it only raised the burst rate. But this is not really necessary.
Could your slow performance be due to your HDDs? I once had two Maxtor 7200 rpm drives. RAID0 was slower than one single drive. So I quickly sold them and bought 2 Hitachi 180GXP drives. Now everything works at it should.
Seagate Barracuda drives are also known for their poor RAID0 performance.

Max
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----------------------------------
Epox 8K5A2+
XP1800 T-Bred B @2324 MHz (166*14) 1.7Volt, watercooled
2x 256MB DDR-RAM Samsung cl2.5 333MHz @ cl2
1x IBM 60GB 120 GXP @ VIA aircooled
2x IBM 60GB 180 GXP @ HPT aircooled RAID 0
GF FX5900XT VTD128, 128MB, VIVO, watercooled
DVD 16x LG
Burner 32x LG @40x
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Old 24th November, 2003, 10:17 PM
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Quote:
Originally Posted by Max Headroom
[...]
Could your slow performance be due to your HDDs? I once had two Maxtor 7200 rpm drives. RAID0 was slower than one single drive. So I quickly sold them and bought 2 Hitachi 180GXP drives. Now everything works at it should.
Seagate Barracuda drives are also known for their poor RAID0 performance.

Max
You're right - one of the HDDs is a "Seagate Barracuda IV" drive. And it seems that the firmware revision of this drive is partially responsible for the bad performance. Seagate will fix this problem for me soon

Another problem could be the RAID-0 stripe size - and last but not least the well known VIA latency/bus parking/... "bugs" could be another reason.
I just want to be sure that the last thing I mentioned is not the "bottle neck" ...
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Old 25th November, 2003, 10:41 AM
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Quote:
Originally Posted by dpr
You're right - one of the HDDs is a "Seagate Barracuda IV" drive.
Are both drives not of the same type??? If so, that could be your bottle neck. Even if both drives are the same a different firmware could be problematic.

Quote:
Originally Posted by dpr
I just want to be sure that the last thing I mentioned is not the "bottle neck" ...
I'm pretty sure it is not unless you have 3 or 4 drives in RAID0.

Take a look at the forums at Planet3DNow.de. Chose "Sonstige Hardware" and search for "RAID" and "bus" or other key words.

Max
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----------------------------------
Epox 8K5A2+
XP1800 T-Bred B @2324 MHz (166*14) 1.7Volt, watercooled
2x 256MB DDR-RAM Samsung cl2.5 333MHz @ cl2
1x IBM 60GB 120 GXP @ VIA aircooled
2x IBM 60GB 180 GXP @ HPT aircooled RAID 0
GF FX5900XT VTD128, 128MB, VIVO, watercooled
DVD 16x LG
Burner 32x LG @40x
----------------------------------
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Old 25th November, 2003, 05:12 PM
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Quote:
Originally Posted by Max Headroom
Are both drives not of the same type??? If so, that could be your bottle neck. Even if both drives are the same a different firmware could be problematic.
First drive is a "Barracuda IV ST380023A" and the second one a "Barracuda V ST380021A". Both have 2 mb cache and have exactly the same size.

Quote:
Originally Posted by Max Headroom
I'm pretty sure it is not unless you have 3 or 4 drives in RAID0.

Take a look at the forums at Planet3DNow.de. Chose "Sonstige Hardware" and search for "RAID" and "bus" or other key words.

Max
Many thanks ! Great and informative source for my problem ...
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