Ultra DMA
uhlar na fantomas.sk
uhlar na fantomas.sk
Středa Duben 11 13:37:15 CEST 2001
James <James na klokan.sh.cvut.cz> wrote:
-> tohle funguje pouze na hda, ktery v pohode nadetekoval bios... udma
-> funguje bez problemu... na hdc a hdd udma nastavit nejde... kdyz to
-> nastavim tak se pri prvnim pristupu na disk se udma vypne...
-> nastavim treba udma2 >>>
-> xxx:~# hdparm -c1 -d1 -X66 -m16 /dev/hdc
-> /dev/hdc:
-> setting 32-bit I/O support flag to 1
-> setting multcount to 16
-> setting using_dma to 1 (on)
-> setting xfermode to 66 (UltraDMA mode2)
-> multcount = 16 (on)
-> I/O support = 1 (32-bit)
-> using_dma = 1 (on)
-> ----------------
-> /dev/hdc:
-> Timing buffer-cache reads: 128 MB in 1.18 seconds =108.47 MB/sec
-> Timing buffered disk reads: 64 MB in 29.08 seconds = 2.20 MB/sec
-> -----------------
-> ....kouknu znova jak je na tom ten disk
-> xxx:~# hdparm -v /dev/hdc
-> /dev/hdc:
-> 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 = 8 (on)
-> geometry = 12021/16/63, sectors = 78177792, start = 0
Aha, asi nemate podporu udma alebo spravnej dosky v jadre, kuknite sa do
syslogu zrejme tam budu hlasenia o chybach a nasledujucom resete radica bez
DMA, skuste potom hdparm -I /dev/hdc a uvidite.
takze prekompilujte jadro s ide patchom a podporou vaseho radica
--
Matus "fantomas" Uhlar, sysadmin at NEXTRA, Slovakia; IRCNET admin of *.sk
uhlar na fantomas.sk ; http://www.fantomas.sk/ ; http://www.nextra.sk/
99 percent of lawyers give the rest a bad name.
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