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 :: Mailing Lists

[ILUG] writing to SCSI tape

[ILUG] writing to SCSI tape

Ronny B . nny at purehatred.org
Fri Nov 24 23:35:25 GMT 2000


On Fri, Nov 24, 2000 at 11:10:33PM +0000, Vincent Cunniffe wrote:
> Is there any way to avoid this problem while continuing to make the
> files on the filesystem available to people? Caching (256MB machine,
> very lightly loaded), tweaking of read-ahead, anything like that?
You could check out hdparm; the options I tried (as suggested in some
Corel newsletter I never knew I signed up for) are as follows:
hdparm -q -c 1 -m 16 -u 1 /dev/hda

-q  Quiet operation
-c  Enable (E)IDE 32-bit I/O
-m  Sets multiple sector I/O (IDE block mode); do a hdparm -i /dev/hda
    to find out how many it supports; MaxMultSect=16 is the usual reply
-u  Set interrupt unmask (you probably need this) - this improves
    responsiveness

I went from 6 to 9 MB/s with these options. I'm just not sure if it's
dangerous or not yet ;)

-- 
O- Nny
NP:Ashes To Ashes (German Slam Version)




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