2 Dec
2008
2 Dec
'08
12:41 a.m.
Apparently there's this new thing called an IndiaMixx which is pretty much my Asus EEE
pre-configured with a Linux Audio distro, Ardour, and EnergyXT (whatever that is).
http://createdigitalmusic.com/2008/11/26/indamixx-laptop-is-first-pre-confi…
Looks pretty cool.
-ken
2 Dec
2 Dec
11:58 a.m.
On Mon, Dec 1, 2008 at 8:41 PM, Ken Restivo <ken(a)restivo.org> wrote:
Apparently there's this new thing called an
IndiaMixx which is pretty much my Asus EEE pre-configured with a Linux Audio distro,
Ardour, and EnergyXT (whatever that is).
http://createdigitalmusic.com/2008/11/26/indamixx-laptop-is-first-pre-confi…
Very under powered ->> 1.6Ghz Intel Atom CPU
If it's like the other netbooks, the keyboard is a bit smaller too
with a 9" or 10" screen.
Definitely cute and useful in certain situations. IMHO, this computer
is good for taking (text) notes in class. You could also get the same
machine for $375 (someplaces $345) and install your own distro and
audio apps. I helped a friend install Ubuntu on an AspireOne - which
is how I learned about it's performance (and lots of scrolling around
to read.)
--
Brad Fuller
12:50 p.m.
Brad Fuller wrote:
On Mon, Dec 1, 2008 at 8:41 PM, Ken Restivo
<ken(a)restivo.org> wrote:
Recently I measured the CPU load and battery run time of some low-delay
audio DSP on an Asus Eee PC 701 (Intel Celeron M, 630 MHz), and on an
Acer Aspire one (Intel Atom 1.6 GHz). The time spent in the CPU was
pretty much the same for both systems, and the battery runtime was
between 3 and 3 1/2 hours on the Asus (Celeron) and 2 1/2 hours on the
Acer (Atom). Here is the data:
algo1
Asus: 56.4% CPU, 3h14' battery
Acer: 51.0% CPU, 2h28' battery
P4: 20.5% CPU
algo2
Asus: 49.8% CPU, 3h16' battery
Acer: 47.5% CPU, 2h09' battery
P4: 16.5% CPU
algo3
Asus: 36.5% CPU, 3h22' battery
Acer: 35.0% CPU, 2h27' battery
P4: 13.0% CPU
jackd
Asus: 6.0% CPU
Acer: 4.8% CPU
P4: 2.2% CPU
Sound card IRQ handler
Asus: 4.5% CPU
Acer: 4.2% CPU
P4: 1.0% CPU (network interface with netjack)
P4 is Intel Pentium 4 @ 3 GHz. I know this is no perfect benchmarking,
but gives an idea of the processor performance.
Giso
Apparently there's this new thing called an
IndiaMixx which is pretty much my Asus EEE pre-configured with a Linux Audio distro,
Ardour, and EnergyXT (whatever that is).
http://createdigitalmusic.com/2008/11/26/indamixx-laptop-is-first-pre-confi…
Very under powered ->> 1.6Ghz Intel Atom CPU
If it's like the other netbooks, the keyboard is a bit smaller too
with a 9" or 10" screen.
Definitely cute and useful in certain situations. IMHO, this computer
is good for taking (text) notes in class. You could also get the same
machine for $375 (someplaces $345) and install your own distro and
audio apps. I helped a friend install Ubuntu on an AspireOne - which
is how I learned about it's performance (and lots of scrolling around
to read.)
8:55 p.m.
Giso Grimm wrote:
Recently I measured the CPU load and battery run time of some low-delay
audio DSP on an Asus Eee PC 701 (Intel Celeron M, 630 MHz), and on an
Acer Aspire one (Intel Atom 1.6 GHz). The time spent in the CPU was
pretty much the same for both systems, and the battery runtime was
between 3 and 3 1/2 hours on the Asus (Celeron) and 2 1/2 hours on the
Acer (Atom). Here is the data:
algo1
Asus: 56.4% CPU, 3h14' battery
Acer: 51.0% CPU, 2h28' battery
P4: 20.5% CPU
algo2
Asus: 49.8% CPU, 3h16' battery
Acer: 47.5% CPU, 2h09' battery
P4: 16.5% CPU
algo3
Asus: 36.5% CPU, 3h22' battery
Acer: 35.0% CPU, 2h27' battery
P4: 13.0% CPU
jackd
Asus: 6.0% CPU
Acer: 4.8% CPU
P4: 2.2% CPU
Sound card IRQ handler
Asus: 4.5% CPU
Acer: 4.2% CPU
P4: 1.0% CPU (network interface with netjack)
P4 is Intel Pentium 4 @ 3 GHz. I know this is no perfect benchmarking,
but gives an idea of the processor performance.
Giso
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Did the Acer have HDD or SSD? Could make the difference in battery time.
or different battery capacity?
I ran super_pi 20 to test basic CPU number crunching on my Core2Duo
E6400 and EeePC900 (Sidux on both systems).:-
EeePC - 71secs
C2D - 18.5secs
9:14 p.m.
New subject: Pre-configured Linux Audio laptop for US$499 gets some ink
On Wed, Dec 03, 2008 at 11:55:18AM +1100, Roger E wrote:
Did
the Acer have HDD or SSD? Could make the difference in battery time.
or different battery capacity?
I ran super_pi 20 to test basic CPU number crunching on my Core2Duo
E6400 and EeePC900 (Sidux on both systems).:-
EeePC - 71secs
C2D - 18.5secs
Awesome statistic work!
Is there some kind of a JACKstone metric that would be useful for measuring Linux RT audio
performance in some kind of pseudo-standardized way?
It seems like a lot of the metrics are kind of fuzzy "I was able to run Ardour with
16 tracks for an hour with no Xruns", or some such.
In my case, I'm interested only in softsynth CPU capability with low (128us/3periods)
Ingo-RT latency on a USB interface.
-ken
Giso Grimm wrote:
>
> Recently I measured the CPU load and battery run time of some low-delay
> audio DSP on an Asus Eee PC 701 (Intel Celeron M, 630 MHz), and on an
> Acer Aspire one (Intel Atom 1.6 GHz). The time spent in the CPU was
> pretty much the same for both systems, and the battery runtime was
> between 3 and 3 1/2 hours on the Asus (Celeron) and 2 1/2 hours on the
> Acer (Atom). Here is the data:
>
> algo1
> Asus: 56.4% CPU, 3h14' battery
> Acer: 51.0% CPU, 2h28' battery
> P4: 20.5% CPU
> algo2
> Asus: 49.8% CPU, 3h16' battery
> Acer: 47.5% CPU, 2h09' battery
> P4: 16.5% CPU
> algo3
> Asus: 36.5% CPU, 3h22' battery
> Acer: 35.0% CPU, 2h27' battery
> P4: 13.0% CPU
>
> jackd
> Asus: 6.0% CPU
> Acer: 4.8% CPU
> P4: 2.2% CPU
>
> Sound card IRQ handler
> Asus: 4.5% CPU
> Acer: 4.2% CPU
> P4: 1.0% CPU (network interface with netjack)
>
> P4 is Intel Pentium 4 @ 3 GHz. I know this is no perfect benchmarking,
> but gives an idea of the processor performance.
>
>
> Giso
3 Dec
3 Dec
12:19 a.m.
On Tue, Dec 2, 2008 at 4:55 PM, Roger E <gurusonic(a)gmail.com> wrote:
Did the Acer have HDD or SSD?
HDD
Could make the difference in battery time. or
different battery capacity?
I ran super_pi 20 to test basic CPU number crunching on my Core2Duo E6400
and EeePC900 (Sidux on both systems).:-
EeePC - 71secs
C2D - 18.5secs
I don't have the machine to do any tests. Obviously, my opinion comes
empirically.
--
Brad Fuller
4:06 a.m.
Roger E wrote:
Giso Grimm wrote:
In my tests both used SSD (the Asus an SSD and additional SD card), and
the lid was closed. The Acer battery says
11.1 V, 2400 mAh, 45 Wh (well, if I multiply capacity and voltage I get
26.6 Wh)
Asus Eee PC 700:
7.4 V, 5200 mAh (this should be 38.5 Wh)
Please note that the Asus in my test was the "old" small one with a
Intel Celeron M. Both hosted an USB soundcard (custom-made hearing aid
research sound card with 4 inputs and 2 outputs), jack was running at 32
kHz and 64 samples/block. The CPU clock was manually switched to
maximum, and both hosted UbuntuStudio 8.04 with a 2.6.24-rt kernel, and
rtirq installed and configured.
I was interessted in the low-delay DSP performance. Desktop performance
of the Acer/Atom is definitely better. "standard" benchmarks say little
about the real-life audio performance (I observed similar with a VIA
Eden board, VIA Esther CPU at 1.2 GHz: The low delay DSP performance is
nearly as good as on my P4, but of course everything else is much
slower, even "normal" floating point processing. The fan-less VIA is a
perfect system for hosting ardour & multichannel recording...).
Giso
Recently I measured the CPU load and battery run time of some low-delay
audio DSP on an Asus Eee PC 701 (Intel Celeron M, 630 MHz), and on an
Acer Aspire one (Intel Atom 1.6 GHz). The time spent in the CPU was
pretty much the same for both systems, and the battery runtime was
between 3 and 3 1/2 hours on the Asus (Celeron) and 2 1/2 hours on the
Acer (Atom). Here is the data:
algo1
Asus: 56.4% CPU, 3h14' battery
Acer: 51.0% CPU, 2h28' battery
P4: 20.5% CPU
algo2
Asus: 49.8% CPU, 3h16' battery
Acer: 47.5% CPU, 2h09' battery
P4: 16.5% CPU
algo3
Asus: 36.5% CPU, 3h22' battery
Acer: 35.0% CPU, 2h27' battery
P4: 13.0% CPU
jackd
Asus: 6.0% CPU
Acer: 4.8% CPU
P4: 2.2% CPU
Sound card IRQ handler
Asus: 4.5% CPU
Acer: 4.2% CPU
P4: 1.0% CPU (network interface with netjack)
P4 is Intel Pentium 4 @ 3 GHz. I know this is no perfect benchmarking,
but gives an idea of the processor performance.
Did the Acer have HDD or SSD? Could make the difference in battery time.
or different battery capacity?
I ran super_pi 20 to test basic CPU number crunching on my Core2Duo
E6400 and EeePC900 (Sidux on both systems).:-
EeePC - 71secs
C2D - 18.5secs 
9:26 a.m.
On Wednesday 03 December 2008 03:06 am, Giso Grimm wrote:
In my tests both used SSD (the Asus an SSD and
additional SD card),
and
the lid was closed. The Acer battery says
11.1 V, 2400 mAh, 45 Wh (well, if I multiply capacity and voltage I
get
26.6 Wh)
I should know more about batteries but I wonder if there is some sort of
phenomena that limits the current output--what I mean is, maybe the
peak current output is 2400 mAh, but maybe it can do that (or some
fraction of that on sort of a decreasing curve) for more than 1 hour?
Of course, the counterexample to that would be a dead short on the
battery, which I'm quite certain will draw more than 2400 mAh. But
even then, after a brief dead short followed by a rest, won't the
battery recover and be able to deliver some more power (assuming the
battery is not destroyed by the dead short).
I should do some googling, but I can't commit to having the time, atm.
Asus Eee PC 700:
7.4 V, 5200 mAh (this should be 38.5 Wh)
Randy Kramer
--
I didn't have time to write a short letter, so I created a video
instead.--with apologies to Cicero, et.al.
6:54 p.m.
Randy Kramer wrote:
On Wednesday 03 December 2008 03:06 am, Giso Grimm
wrote:
Current is measured in mA. mAh denotes capacity. ie. a 2400mah battery
should deliver 2400 mA for 1 hr, or 1200 mA for 2 hrs etc.
In my tests both used SSD (the Asus an SSD and
additional SD card),
and
the lid was closed. The Acer battery says
11.1 V, 2400 mAh, 45 Wh (well, if I multiply capacity and voltage I
get
26.6 Wh)
I should know more about batteries but I wonder if there is some sort of
phenomena that limits the current output--what I mean is, maybe the
peak current output is 2400 mAh, but maybe it can do that (or some
fraction of that on sort of a decreasing curve) for more than 1 hour?
Of course, the counterexample to that would be a dead
short on the
battery, which I'm quite certain will draw more than 2400 mAh. But
even then, after a brief dead short followed by a rest, won't the
battery recover and be able to deliver some more power (assuming the
battery is not destroyed by the dead short).
Just don't do it. :) Lithium batteries will overheat and possibly catch
fire or even explode. I fly RC helicopters using LiPo batteries. You can
find videos on YewToob of this happening.
LiIon batteries in computers are not so volatile, but not immune either.
Fires have been recorded and millions have been recalled/replaced by
manufacturers in the past for safety reasons.
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days inactive
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linux-audio-user@lists.linuxaudio.org
8 comments
5 participants
participants (5)
-
Brad Fuller -
Giso Grimm -
Ken Restivo -
Randy Kramer -
Roger E