widze ze nie za bardzo rozumiesz ...
to ze obciazenie procka to byla zupelna inna para kaloszy
mialem taki sam czas dostepu jak ty na jedym czy na dwoch dyskach
to tresc mojego zapytania do firmy WDC
Reference #
031130-000026
subject: access time > 20ms
Cytat:
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Napisany przez Alex
Customer (Alex) 11/30/2003 05:56 AM
I ve tested this dive with benchmarks (HD Tach/AIDA32) and on two controllers Sil3112a & Promise Fasttrak 376. Always random access time is above 20ms. The internet tests of the same drive have acces time below 16ms what is wrong? CPU utilisation is also higher than other SATA drives (on SIL3112a) and is above 50%. Is there any firmwere upgrade to solve this problems? Sata Controler will build on motherboard A7n8x-deluxe(sil3112a) and P4PE(FastTrack 376). I have two same hdd (wd1200jd-75fyb0) and the problem occur either on the RAID0 and single drive configurations. I've tested IBM PATA drives with ASUS stata-pata dongles on this hardware and access time is below 12ms...
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Cytat:
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Napisany przez James W.
Response (James W.) 12/01/2003 06:20 AM
We do not provide firmware updates for our drives. Please update the mainboard bios from Asus, but this should not be necessary. The design of the controllers are based on parallel UltraATA/ 100 or 133 controllers equipped with 'bridges' (serial to parallel converters) to provide Serial ATA capability. Unfortunately, the loss of performance caused by these bridges is considerable. You have the Sil3112 and this is the best chip to have for SATA, but the guts of these things are still essentially IDE and only the interface has changed with an SATA connector commonly known as a bridge. If you have a controller that is also a bridge and not a direct SATA or true SATA connector, this could get pretty slow.
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Cytat:
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Napisany przez James W.
Response (James W.) 12/10/2003 01:18 AM
Please use the DLG Diagnostic to test the drives (the software will work if drive(s) are on the Silicon controller.)
http://support.wdc.com/download/index.asp#diagutils
Please donwload dlgdiag11.zip to a hard drive, then unzip it and click on the contents to create a floppy. Please run the extended test.
If it passes I am running out of ideas, except to say that every system is different. |