UDMA/100 kai PROMISE ATA 100 controller

[Pavlos Parissis]

> diafora den iparxei alla mallon gia afto prepei na ftai to hdparm.
> Exw vrei patch gia to hdparm tha to dokimasw shmera kai tha sa pw avrio
> ean iparxei diafora.

Sto sistima mou eixa thn version pou erxwtan me to redhat 6.2 kai h pio new
einai h 3.9.
Katevazw to src kai kanw  rebuild, to binary dev epmaine dioti htan build
against glibc2.2.
Kai me thn new version diafora den iperxe etsi eipa na dokimasw to patch
pou vrika sto linux-ide
Katevasa to  hdparm-3.9.tar.gz   kai hdparm-3.9a.patch ekana patch kai make
alla oxi install
oi dokimes egina apo to build dir.
Deite ta apotelemsta me merikes dokimes pou ekana:

[root /home/paul/hdparm-3.9]# ./hdparm -t /dev/hde

/dev/hde:
 Timing buffered disk reads:  64 MB in  1.82 seconds = 35.16 MB/sec

[root /home/paul/hdparm-3.9]# ./hdparm -c 1 -d 1 /dev/hde

/dev/hde:
 setting 32-bit I/O support flag to 1
 setting using_dma to 1 (on)
 I/O support  =  1 (32-bit)
 using_dma    =  1 (on)

[root /home/paul/hdparm-3.9]# ./hdparm -t /dev/hde

/dev/hde:
 Timing buffered disk reads:  64 MB in  1.87 seconds = 34.22 MB/sec <<<<<<<
meiwsi??????

[root /home/paul/hdparm-3.9]# ./hdparm -c 3 -d 1 /dev/hde

/dev/hde:
 setting 32-bit I/O support flag to 3
 setting using_dma to 1 (on)
 I/O support  =  3 (32-bit w/sync)
 using_dma    =  1 (on)

[root /home/paul/hdparm-3.9]# ./hdparm -t /dev/hde

/dev/hde:
 Timing buffered disk reads:  64 MB in  1.82 seconds = 35.16 MB/sec

[root /home/paul/hdparm-3.9]# ./hdparm -c 3 -d 1 -m 16 /dev/hde

/dev/hde:
 setting 32-bit I/O support flag to 3
 setting multcount to 16
 setting using_dma to 1 (on)
 multcount    = 16 (on)
 I/O support  =  3 (32-bit w/sync)
 using_dma    =  1 (on)
[root /home/paul/hdparm-3.9]# ./hdparm -t /dev/hde

/dev/hde:
 Timing buffered disk reads:  64 MB in  1.81 seconds = 35.36 MB/sec

H max speed pou katafera einai 35.36 MB/sec :(

Afta mexri edw, molis vgei o 2.4.0 tha ton dokimasw na dw ean se afton ta
pragmata einai kalytera.
Elpizw h metavash mou apo 2.2.x se 2.4.x na einai anwdinh:)

Pavlos

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I love having the feeling of being in control
while i have the sensation of speed

The surfer of life
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