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Re: 7200 RPM udma33 same speed as 5400 PIO mode 4



Check out my interesting timings:
/dev/hda:
 multcount    =  0 (off)
 I/O support  =  0 (default 16-bit)
 unmaskirq    =  1 (on)
 using_dma    =  0 (off)
 keepsettings =  0 (off)
 nowerr       =  0 (off)
 readonly     =  0 (off)
 readahead    =  0 (off)
 geometry     = 1232/255/63, sectors = 19807200, start = 0
root@cg619985-a:/home/dan/debs/pgcc/gcc-2.95.2# hdparm -t
 /dev/hda
 /dev/hda:
 Timing buffered disk reads:  64 MB in 15.10 seconds =  4.24
 MB/sec


root@cg619985-a:/home/dan/debs/pgcc/gcc-2.95.2# hdparm -tT /dev/hda

/dev/hda:
 Timing buffer-cache reads:   128 MB in  2.32 seconds = 55.17 MB/sec
 Timing buffered disk reads:  64 MB in  6.83 seconds =  9.37 MB/sec
root@cg619985-a:/home/dan/debs/pgcc/gcc-2.95.2# hdparm /dev/hda

/dev/hda:
multcount    = 16 (on)
I/O support  =  1 (32-bit)
unmaskirq    =  0 (off)
using_dma    =  0 (off)
keepsettings =  0 (off)
nowerr       =  0 (off)
readonly     =  0 (off)
readahead    = 16 (on)
geometry     = 1232/255/63, sectors = 19807200, start = 0

Note: when my machine is a bit idler, I can get better scores. When I
overclock my machine from 350 to 370 I get +~2 MB/s more.
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