On Jul 8, 2006, at 7:46 PM, Ron Johnson wrote:
and hdparm reports:
/dev/hda:
multcount = 16 (on)
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 8 (on)
geometry = 2434/255/63, sectors = 39102336, start = 0
That might be part of your trouble.
/dev/hda:
multcount = 0 (off)
IO_support = 1 (32-bit) <<<<<<<<
unmaskirq = 1 (on) <<<<<<<<
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 30401/255/63, sectors = 488397168, start = 0
Hmmm...I'm in serious need of some education here. (my main
experience is with PowerPC)
Are these settings part of the BIOS? hdparm manipulations don't
seem to be persistent across reboots.
I also notice that there's a big discrepancy in the readahead. What
are the tradeoffs of bumping this number? It just preloads the disk
controller's cache, right?
--rich
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