[mythtv-users] Enable DMA
indulis.b at au1.ibm.com
Fri Mar 23 05:25:07 UTC 2007
> I am trying to enable DMA on my HD Myth box to increase performance. It
> works fine not but I have read so much about how DMA increases
> so i figured I would give it a shot...
> Here is my system config
> Chipset - SiS
> Western Digital HDD 500GB SATA
> Heres some term output...
> [root at Mitchell_mc myth]# /sbin/hdparm /dev/sda
> IO_support = 0 (default 16-bit)
> readonly = 0 (off)
> readahead = 256 (on)
> geometry = 60801/255/63, sectors = 976773168, start = 0
> (I take it that DMA is not ON)
> Trying to enable it....
> [root at Mitchell_mc myth]# echo "/sbin/hdparm -d1 /dev/hda" >>
Yes you are right that when you did the "echo..." command the way you did,
you need to reboot. This is 'cos you added a line to the end of the file
/etc/rc.d/rc.local (that is what >> does). The commands in this file are
executed during system boot.
Now if you just type the command
/sbin/hdparm -d1 /dev/hda
Then it will execute right away
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