13 Jun
2017
13 Jun
'17
1:28 a.m.
Hello all.
While configuring kernel, i stucked on option CONFIG_RAW_DRIVER, which
enables /dev/raw device section.
I suppose, things like linuxsampler or others, hardly working with
storage, might utilize this access way for most direct access to
samples. Or even in audio recording (only nearly imaginations).
Is it so really?
While searching in internet to learn about its real status, i got 2
facts:
- When raw device is mapped to some hda/sda dev, allowing to use it
even bypassing disk's internal cache.
https://unix.stackexchange.com/questions/238798/what-happened-to-dev-raw
- Yet i found proposal to remove raw devices support, argumented as
these devices have no notable use.
http://lkml.iu.edu/hypermail/linux/kernel/0505.2/1387.html
(but that discussion is sooo old...)
13 Jun
13 Jun
8:43 a.m.
Nikita Zlobin wrote:
While configuring kernel, i stucked on option
CONFIG_RAW_DRIVER, which
enables /dev/raw device section.
I suppose, things like linuxsampler or others, hardly working with
storage, might utilize this access way for most direct access to
samples. Or even in audio recording (only nearly imaginations).
Is it so really?
No. Using a raw device would require that the application implements
its own file system.
Streaming audio samples is easy to handle with existing file systems.
Regards,
Clemens
3:30 p.m.
On Tue, Jun 13, 2017 at 2:43 AM, Clemens Ladisch <clemens(a)ladisch.de> wrote:
Nikita Zlobin wrote:
It's usually database systems like Oracle (maybe PostgreSQL?) that use raw
device access like that. Not as a big of an issue these days as it was in
the late 90s/early 00s, where system performance wasn't as good, or drives
weren't as fast or efficient. Even commercial samplers like Kontakt don't
use raw access either for DFD streaming.
While configuring kernel, i stucked on option
CONFIG_RAW_DRIVER, which
enables /dev/raw device section.
I suppose, things like linuxsampler or others, hardly working with
storage, might utilize this access way for most direct access to
samples. Or even in audio recording (only nearly imaginations).
Is it so really?
No. Using a raw device would require that the application implements
its own file system.
Streaming audio samples is easy to handle with existing file systems.
2519
days inactive
2520
days old
linux-audio-dev@lists.linuxaudio.org
2 comments
3 participants
participants (3)
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Brett McCoy -
Clemens Ladisch -
Nikita Zlobin