3 Aug
2003
3 Aug
'03
4:45 p.m.
I got terrible performance from my 7200 RPM ATA 100 disks because DMA was
not getting enabled in the kernel. I couldn't figure out the problem
because I did enable it when I compiled my kernel. My silly hack was to
use the kernel config left over from my previous Mandrake installation,
where DMA was working fine, and move it to my new Gentoo installation when
I compiled my kernel. And now...
bash-2.05b# hdparm -t /dev/hda
/dev/hda:
Timing buffered disk reads: 164 MB in 3.01 seconds = 54.49 MB/sec
bling bling!
-l[e^2]
------------------------------
http://www.fallingforward.net/
people experimenting with music, art and technology
On 3 Aug 2003, Mark Knecht wrote:
On Sun, 2003-08-03 at 04:49, LinuxMedia wrote:
Could anyone tell Me what the conclusion was about what is the best
filesystem for these kinds of heavy recording loads?
Thanks,
Rocco
Rocco,
I published some stuff which is on Jan Depner's site. You can find
that in Google.
I used reiserfs on my audio partition with good success. If it's not
working well for you, then we should try and get to the bottom of why.
Do a few measurements.
Wizard root # hdparm -tT /dev/hda
/dev/hda:
Timing buffer-cache reads: 768 MB in 2.00 seconds = 384.00 MB/sec
Timing buffered disk reads: 130 MB in 3.01 seconds = 43.19 MB/sec
Wizard root #
The first speed is talking only to the drive's buffer RAM, so it's very
fast. The second is actually reading off the drive, so it's more
important.
What sort of numbers do you get?
Remember, rotational speed is only one of the aspects of how fast a
drive is.
Good luck,
Mark