Re: [LAU] optimal disk performance, ubuntu

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To: Lee Revell <rlrevell@...>
Cc: linux audio users <linux-audio-user@...>
Date: Thursday, November 20, 2008 - 8:01 am

Lee Revell wrote:

> What format are the tracks in? 16 bit, 44.1Khz is 0.7MB/sec per track

It's 16 bits, 44khz

> What does running hdparm -Tt on the block device (/dev/sdX) give you?

atte@vestbjerg:~$ sudo hdparm -Tt /dev/sda

/dev/sda:
Timing cached reads: 1862 MB in 2.00 seconds = 931.56 MB/sec
Timing buffered disk reads: 142 MB in 3.00 seconds = 47.29 MB/sec

How does that sound?

> Realtime tuning should not matter because with any sanely written DAW the disk

Ok

I experimented further, and it's not only the number of audio tracks
that seems to be the problem. Other cpu intensive stuff like soft synths
and fx bring the cup usage up. But I still feel that many audio tracks
take more cpu than they're supposed to.

--
Atte

http://atte.dk http://modlys.dk
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Messages in current thread:
[LAU] optimal disk performance, ubuntu, Atte André Jensen, (Wed Nov 19, 10:16 pm)
Re: [LAU] optimal disk performance, ubuntu, Lee Revell, (Thu Nov 20, 12:49 am)
Re: [LAU] optimal disk performance, ubuntu, Atte André Jensen, (Thu Nov 20, 8:01 am)
Re: [LAU] optimal disk performance, ubuntu, Peder Hedlund, (Thu Nov 20, 12:02 pm)
Re: [LAU] optimal disk performance, ubuntu, Atte André Jensen, (Thu Nov 20, 5:07 pm)
Re: [LAU] optimal disk performance, ubuntu, Ross, (Sat Nov 22, 4:02 am)
Re: [LAU] optimal disk performance, ubuntu, Peder Hedlund, (Thu Nov 20, 11:39 am)
Re: [LAU] optimal disk performance, ubuntu, Atte André Jensen, (Thu Nov 20, 5:10 pm)
Re: [LAU] optimal disk performance, ubuntu, Lee Revell, (Sat Nov 22, 2:52 am)
Re: [LAU] optimal disk performance, ubuntu, Peder Hedlund, (Fri Nov 21, 7:10 am)
Re: [LAU] optimal disk performance, ubuntu, Peder Hedlund, (Thu Nov 20, 11:51 am)