hdparm -c1 -d1 -u1 /dev/hdb
This was what I found worked best for me. I set this on all three of my drives
during boot in a startup script called "mythhw".
What I looked for was maximum throughput and lowest latency. Basically, I went
through the MAN pages for hdparm and tried each setting in turn on a drive
other than my OS drive (one of the two mirror set that have my video, recording
and SQL databases). Once I did that I ran
hdparm -t /dev/hdb
hdparm -T /dev/hdb
I re-ran these two commands and kept comparing results until I either got no
more improvement or started ot make it worse. Then I just rolled back settings
until I identified the minimum parameters I needed to get optimum performance.
Sure, I locked my machine hard a couple of times... but it was worth it to get
the max performance out of my drives.
Once I had this done, I mirrored the two drives and ran the same tests on
/dev/md0 and /dev/md1.
I then tried the same settings with the OS drive to find out if it made a
difference... it did... and added that to the mythhw script.
Hope this helps!
-----Original Message-----
From: [EMAIL PROTECTED] on behalf of Marius Schrecker
Sent: Wed 7/20/2005 2:41 AM
To: Discussion about mythtv
Cc:
Subject: [mythtv-users] hdparm was: MythShyte
Gavin Haslet wrote:
...
>I had problems with stutt
>ring occasionally until I got
down-and-dirty with hdparm to fix some of the HD problems. Now I have a
bootup script that runs the hdparm parameters that I found worked best
with video....
Hi,
Just wondering which paramaters worked for you and what to look for when
optimizing for video.
Cheers
Marius
Registered Linux user
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