Tak zmena parametru nepomaha. Read-ahed jde nastavit maximalne na 196, vic nelze.
Pro utechu sem jeste pastnu vysledky Maxtora 7080AT - 80MB kousek na BX chipsetu (2*600Mhz Katmai)
Kód:
 
localhost ~ # hdparm -Tt /dev/hdc && hdparm /dev/hdc

/dev/hdc:
 Timing cached reads:   592 MB in  2.01 seconds = 294.45 MB/sec
 Timing buffered disk reads:    4 MB in  4.98 seconds = 822.00 kB/sec

/dev/hdc:
 multcount    =  0 (off)
 IO_support   =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  0 (off)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 990/10/17, sectors = 168300, start = 0
Na hw skutecne zalezi (stahoval jsem si z nej gamesy sveho mladi, ktere jsem kdyzi paril na 386. Je to jen tak pro zajimavost)