Re: [gentoo-amd64] Mobo recommendations

[Chris Frederick]

James Pattinson wrote:
> <snip>
> Could some of you perhaps run hdparm -Tt on your root disk and let me
> know what you get? I get great performance off the disk but the cached
> read speed is about half the speed of my P4 box:
>
> amd64~ # hdparm -Tt /dev/sda
>
> /dev/sda:
> Timing cached reads:   1532 MB in  2.00 seconds = 765.95 MB/sec
> Timing buffered disk reads:   98 MB in  3.01 seconds =  32.58 MB/sec
>
> pentium4~ # hdparm -Tt /dev/sda
>
> /dev/sda:
> Timing cached reads:   2296 MB in  2.00 seconds = 1147.03 MB/sec
> Timing buffered disk reads:   44 MB in  3.02 seconds =  14.56 MB/sec

AMD64 3.0 GHz:
/dev/hda:
  Timing cached reads:   1300 MB in  2.00 seconds = 649.45 MB/sec
  Timing buffered disk reads:   84 MB in  3.02 seconds =  27.80 MB/sec

DUAL Zeon 2.6 GHz:
/dev/hda:
  Timing cached reads:   2196 MB in  2.00 seconds = 1096.52 MB/sec
  Timing buffered disk reads:  140 MB in  3.00 seconds =  46.61 MB/sec

Looks like my AMD64 setup is getting about half of my Zeon system 
performance.  Also curious why your P4 buffered disk reads are so low 
compared to mine.

Chris Frederick

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