HD Speed.

[Bob Marcan]

Alexandre Strube wrote:
> Em Dom, 2004-02-22 às 07:15, Dean Mumby escreveu:
> 
> 
>> hdparm -tT /dev/sda
>>/dev/sda:
     SCSI^
>> Timing buffer-cache reads:   3568 MB in  2.00 seconds = 1784.00 MB/sec
>> Timing buffered disk reads:  166 MB in  3.00 seconds =  55.33 MB/sec
>>not slow at all
> 
> 
> Now I'm confused. My machine (a athlon xp 1700, 384mb ddr) shows very
> disappointing results, compared to your blazing-speed p4:
> 
> /dev/hda:
       IDE^
>  Timing buffer-cache reads:   904 MB in  2.00 seconds = 452.00 MB/sec
>  Timing buffered disk reads:   80 MB in  3.06 seconds =  26.14 MB/sec
> 
> Is this expected for such machine, or is there something to be done?
> 

RH9, P4 2.0 GHz, 1 GB, Intel D854GBV mobo

IDE interface: Intel Corp. 82801DB ICH4 IDE (rev 1).
WDC WD800JB-00CRA1, 80GB, 7200 rpm, 8MB cache
         DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 
/dev/hda:
  Timing buffer-cache reads:   128 MB in  0.41 seconds =312.20 MB/sec
  Timing buffered disk reads:  64 MB in  2.24 seconds = 28.57 MB/sec
[encijan ~]$ sudo hdparm -Tt /dev/hde

Unknown mass storage controller: Promise Technology, Inc. 20269 (rev 2).
WDC WD800JB-00CRA1, 80GB, 7200 rpm, 8MB cache
         DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 
/dev/hde:
  Timing buffer-cache reads:   128 MB in  0.42 seconds =304.76 MB/sec
  Timing buffered disk reads:  64 MB in  1.39 seconds = 46.04 MB/sec

-- 
  Bob Marcan                     mailto:bob.marcan at hermes-plus.si
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