Re: Mip-o-suction (horrible performance)
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Rich Johnson wrote:
> On Jul 8, 2006, at 7:46 PM, Ron Johnson wrote:
>>> and hdparm reports:
>>> 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.
>> 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.
No. This is driven by parameters defined in /etc/hdparm.conf
> 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?
Ron Johnson, Jr.
Jefferson LA USA
Is "common sense" really valid?
For example, it is "common sense" to white-power racists that
whites are superior to blacks, and that those with brown skins
are mud people.
However, that "common sense" is obviously wrong.
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