|
|
|
|
|
|
| Author |
Message |
Nobody Here
*nix forums beginner
Joined: 26 Jul 2005
Posts: 15
|
 Posted: Tue Jul 26, 2005 9:51 am Post subject:
Re: Unbiased GNU VoIP Comparisons
|
|
|
On Sat, 23 Jul 2005 12:36:59 -0600, Luc The Perverse wrote:
| Quote: | Hi, I would like to design some applications to use VoIP, possiblely
secure VoIP.
Where can I find some reviews/comparisons of the different packages
available? If possible I would like to find something that has
interoperable clients in Linux and Windows.
|
www.skype.com
I *think* it has an API for external programs to access. Works well on
both Linux and (spit) windows.
--
Nobby |
|
| Back to top |
|
 |
Nobody Here
*nix forums beginner
Joined: 26 Jul 2005
Posts: 15
|
| Posted: Tue Jul 26, 2005 9:52 am Post subject:
Re: Unbiased GNU VoIP Comparisons
|
|
|
On 26 Jul 2005 11:51:18 GMT, Nobody Here wrote:
| Quote: | On Sat, 23 Jul 2005 12:36:59 -0600, Luc The Perverse wrote:
Hi, I would like to design some applications to use VoIP, possiblely
secure VoIP.
Where can I find some reviews/comparisons of the different packages
available? If possible I would like to find something that has
interoperable clients in Linux and Windows.
www.skype.com
I *think* it has an API for external programs to access. Works well on
both Linux and (spit) windows.
|
Although you did say GNU, which it clearly isn't. :-)
--
Nobby |
|
| Back to top |
|
|
Luc The Perverse
*nix forums addict
Joined: 23 Jun 2005
Posts: 62
|
| Posted: Tue Jul 26, 2005 12:54 pm Post subject:
Re: Unbiased GNU VoIP Comparisons
|
|
|
"Nobody Here" <nobby@myhost.invalid> wrote in message
news:42e623fa$0$24495$ed2619ec@ptn-nntp-reader03.plus.net...
| Quote: | On 26 Jul 2005 11:51:18 GMT, Nobody Here wrote:
On Sat, 23 Jul 2005 12:36:59 -0600, Luc The Perverse wrote:
Hi, I would like to design some applications to use VoIP,
possiblely
secure VoIP.
Where can I find some reviews/comparisons of the different
packages
available? If possible I would like to find something that has
interoperable clients in Linux and Windows.
www.skype.com
I *think* it has an API for external programs to access. Works
well on
both Linux and (spit) windows.
Although you did say GNU, which it clearly isn't. 
|
Well if it's free . . . then what's to complain about!
I may have said GNU, but what I meant was worthwhile, usable, zero
cost (even if part of a resold package), customizable utility
Sorry for not specifying.
--
"When you have to choose between a first-rate company with a
second-rate product and a second-rate company with a first-rate
product, it's never an ideal choice. " -Ed (www.overclockers.com) |
|
| Back to top |
|
|
Jonathan Bartlett
*nix forums Guru Wannabe
Joined: 05 Apr 2005
Posts: 116
|
| Posted: Wed Jul 27, 2005 11:37 am Post subject:
Re: Unbiased GNU VoIP Comparisons
|
|
|
Luc The Perverse wrote:
| Quote: | Hi, I would like to design some applications to use VoIP, possiblely
secure VoIP.
|
I haven't used many packages, but I use Asterisk right now and love it.
It took only two hours to create a phone interface to our job tracking
system.
Jon
----
Learn to program using Linux assembly language
http://www.cafeshops.com/bartlettpublish.8640017 |
|
| Back to top |
|
|
Luc The Perverse
*nix forums addict
Joined: 23 Jun 2005
Posts: 62
|
| Posted: Wed Jul 27, 2005 1:12 pm Post subject:
Re: Unbiased GNU VoIP Comparisons
|
|
|
"Jonathan Bartlett" <johnnyb@eskimo.com> wrote in message
news:42e79c36$1@news.tulsaconnect.com...
| Quote: | Luc The Perverse wrote:
Hi, I would like to design some applications to use VoIP,
possiblely secure VoIP.
I haven't used many packages, but I use Asterisk right now and love
it. It took only two hours to create a phone interface to our job
tracking system.
|
Do you have a link or something?
I generally have a hard time finding source code for GNU projects.
You follow the link and find an endless arrays of directories that I
don't know what any of them mean.
I never know where to start looking either :)
Google?
--
"When you have to choose between a first-rate company with a
second-rate product and a second-rate company with a first-rate
product, it's never an ideal choice. " -Ed (www.overclockers.com) |
|
| Back to top |
|
|
Daniel Franklin
*nix forums beginner
Joined: 28 Jul 2005
Posts: 3
|
| Posted: Thu Jul 28, 2005 12:27 am Post subject:
Re: Unbiased GNU VoIP Comparisons
|
|
|
["Followup-To:" header set to comp.os.linux.development.apps.]
Luc The Perverse wrote:
| Quote: | "Jonathan Bartlett" <johnnyb@eskimo.com> wrote in message
news:42e79c36$1@news.tulsaconnect.com...
Luc The Perverse wrote:
Hi, I would like to design some applications to use VoIP,
possiblely secure VoIP.
I haven't used many packages, but I use Asterisk right now and love
it. It took only two hours to create a phone interface to our job
tracking system.
Do you have a link or something?
|
http://www.asterisk.org
| Quote: | I generally have a hard time finding source code for GNU projects.
|
http://directory.fsf.org
| Quote: | You follow the link and find an endless arrays of directories that I
don't know what any of them mean.
|
Ummm that would probably be the source code :-)
| Quote: | I never know where to start looking either :)
Google?
|
Good guess :-)
- Daniel
--
*************************************************************************
* Daniel Franklin - Lecturer in Computer Engineering
* University of Wollongong, NSW, Australia * d.franklin at ieee.org
************************************************************************* |
|
| Back to top |
|
|
John Haller
*nix forums beginner
Joined: 03 Aug 2005
Posts: 2
|
| Posted: Wed Aug 03, 2005 12:42 pm Post subject:
Re: Military or Commercial Aircraft Navigation
|
|
|
Russel Millar wrote:
| Quote: | On commercial aircraft or military they have embedded systems that boot up
as soon as power is supplied plus the software is a quick boot.
How can the same system be duplicated because it will be used on a boat.
One of the best articles on how to improve Linux bootup time is |
here:
http://www.linuxsymposium.org/proceedings/reprints/Reprint-Bird-OLS2004.pdf
Interestingly, it was done by Sony, presumably for inclusion in
embedded devices like their TVs or cameras. It focused on kernel
improvements, and reduced that to a subsecond boot, from start of
kernel to init process running. The firmware start and user
process initialization wasn't the main topic, but there were some
suggestion there. The BIOS for Intel processors is one cause of
slow behavior, but that wasn't discussed in the paper. Possible
ideas for user improvements were presented, but not implemented
or measured.
| Quote: |
Trouble is the navigation programs are for Windows 95, 98, XP operating
systems.
No help for that in a Linux group.
I would like to know what embedded systems aircraft use.
Flight certification is a different topic, and I have heard |
some comments about difficulty of certifying a Linux based
product, but I'm not able to speak to those issues |
|
| Back to top |
|
|
Stephen O
*nix forums beginner
Joined: 21 Jul 2005
Posts: 11
|
| Posted: Fri Aug 05, 2005 12:32 pm Post subject:
Re: Military or Commercial Aircraft Navigation
|
|
|
Linux is only be a problem on higher criticality platforms, if you are
familiar with D0-178B, level C and higher most likely can not use linux
because it is not partitionable, or adhere to certain ARINC standards.
On level D, or level E platforms, linux can be used.
Depending upon which avionics systems you are talking about some can
take 1-2 minutes to complete boot up. I know radios and displays are
generally faster, but hey have higher criticality applied to them
therefore the requirements for a quick boot are more stingent.
One thing you may want to look into is how critical the system in
question is and develop some use cases and requirements. Depending upon
how your system is used and what it's requirements are you may not need
a quick boot time, or 30-seconds may be sufficient in which case linux
could most certainly be used. |
|
| Back to top |
|
|
Niklas Holsti
*nix forums beginner
Joined: 25 Jan 2006
Posts: 1
|
| Posted: Wed Jan 25, 2006 11:14 am Post subject:
Re: factors affecting context switch time
|
|
|
vivekian wrote:
| Quote: | Also , another question -- maybe should post it as a different thread
.. There are some lines of C++ code for which the number of clock
cylces has to be measured. At present using RDTSC instruction. Is there
some way to make sure that the code runs uninterrupted so that a true
picture is available ? Or is there some tool available to measure how
much time the code takes to run ?
|
[ I limited this post to the "embedded" and "realtime" groups. ]
You can find some references to some such tools at
http://www.tidorum.fi/bound-t/timing-tools.html. Don't know if
they are exactly the kind of thing you need, though; mostly they
are aimed at smaller systems with small real-time kernels.
--
Niklas Holsti
Tidorum Ltd
niklas holsti tidorum fi
. @ . |
|
| Back to top |
|
|
brenda
*nix forums beginner
Joined: 08 Feb 2006
Posts: 1
|
| Posted: Wed Feb 08, 2006 6:34 am Post subject:
Re: specint question
|
|
|
Hi,
I know you are not supposed to compare SpecInt2000 with SpecInt 95
But if I had to what would be a good rule of thumb.
We are trying to compare 2 boards one uses SpecInt 2K and the other
SpecInt95. How can we compare them? |
|
| Back to top |
|
|
Thomas Hawtin
*nix forums beginner
Joined: 30 Jan 2006
Posts: 2
|
| Posted: Sun Mar 05, 2006 8:04 pm Post subject:
Re: looking for performance statistics (native JAVA processors)
|
|
|
noone wrote:
| Quote: |
Does anyone have references to performance stats or whitepapers about
performance of native java processors vs. software jvm for embedded apps?
I read the hardware specs on a couple of 100mhz processors and they didn't
seem very impressive, even for running bytecode in hardware. One spec
showed a benchmark of copying a 10,000 byte array in 64ms. On the surface
that seems fast but consider that 10000/0.064secs=1.25mbits/sec. and they
include an ethernet tranceiver on the eval board. I haven't used a 1mb/s
ethernet in nearly 15 years!
|
640 cycles per iteration. Running interpreted on my desktop machine
gives around 200 cycles per iteration. However, CLDC (and even RTSJ)
have block copying methods which will presumably be written natively.
| Quote: | I guess what I'm really wondering is whether there are java native
processors out there that can approach risc mips levels. I
understand that there will be emulation overhead even in hardware but my
requirements will be to keep up with 802.11b wireless speeds: 11bm/s.
Anyone know of java native processors that can deliver that kind of
thru-put and support the FULL J2ME specs?
|
ARM processors with Jazelle can execute Java byte code directly at a
reasonable pace. They also support Ahead-Of-Time (AOT) compilation for
speed critical parts.
http://www.arm.com/products/esd/jazelle_home.html
http://www.arm.com/linux/
Tom Hawtin
--
Unemployed English Java programmer
http://jroller.com/page/tackline/ |
|
| Back to top |
|
|
Roedy Green
*nix forums Guru Wannabe
Joined: 16 Aug 2005
Posts: 242
|
| Posted: Sun Mar 05, 2006 10:38 pm Post subject:
Re: looking for performance statistics (native JAVA processors)
|
|
|
On Sun, 05 Mar 2006 12:31:28 -0500, noone <noone@all.com> wrote,
quoted or indirectly quoted someone who said :
| Quote: | I guess what I'm really wondering is whether there are java native
processors out there that can approach risc mips levels.
|
the intent of a Java processor would to conserve RAM. It could run as
an interpreter without chewing up megabytes of RAM with the machine
language equivalents.
Sun abandoned its PicoJava chips when it turned out they ran too hot.
You need a low power chip for a hand held.
Have a look at http://mindprod.com/jgloss/picojava.html
I have always wanted to see a machine with a cached stack with a
mindless little processor that worked in parallel using spare memory
cycles to keep the stack from overflowing and to keep it filled.
--
Canadian Mind Products, Roedy Green.
http://mindprod.com Java custom programming, consulting and coaching. |
|
| Back to top |
|
|
ray
*nix forums Guru
Joined: 20 Feb 2005
Posts: 1127
|
| Posted: Tue Mar 21, 2006 11:13 pm Post subject:
Re: Best Linux distribution for a Mini-ITX server?
|
|
|
On Tue, 21 Mar 2006 15:57:53 -0500, Lew Pitcher wrote:
| Quote: | -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
ray wrote:
I prefer X manager - it works pretty well, allows multiple X sessions, and
the eval copy handles my needs.
To each his own, I guess
I prefer Xming. It too allows multiple X sessions (rootless, if I want),
and it is FOSS, licenced under the GPL.
- --
Lew Pitcher, IT Specialist, Corporate Technology Solutions,
Enterprise Technology Solutions, TD Bank Financial Group
(Opinions expressed here are my own, not my employer's)
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.2.2 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
iD8DBQFEIGjRagVFX4UWr64RAozHAJ9ODO9LGW5FZCwCxnv6xcxoXmpf6QCfZgiy
x8OemtZGqQ7OeR72eS9UH/I=
=4BxK
-----END PGP SIGNATURE-----
|
Thanks for the reference - I'll see if I can find time to try it out in
the near future. It has been several years since I did an exhaustive
comparison; at that time, I tried basically everything I could find -
mostly those referred from Kenton Lee's X/Motif page. I found that most of
the 'free' packages were quite slow - several were Java based. |
|
| Back to top |
|
|
Michael Schnell
*nix forums Guru Wannabe
Joined: 21 Feb 2005
Posts: 110
|
| Posted: Mon Mar 27, 2006 5:36 am Post subject:
Re: Best Linux distribution for a Mini-ITX server?
|
|
|
| Quote: | Excuse me: that's not what I meant. . I don't dispute that a 64-bit AMD CPU
may match a 32-bit Intel CPU in speed and 32-bit performance. But why not
enable the extra features, especially if you're doing graphics or floating
point processing? More bits tends to really help graphical and number
crunching performance, and if it's not too tough to get the operations
converted to 64-bit, it can take a bit of work, but go for it!
|
Is it possible to run 64 Bit user programs in a 32 Bit OS ? (The OS
needs to save the 64 bit registers when scheduling ...)
-Michael |
|
| Back to top |
|
|
Captain Dondo
*nix forums Guru Wannabe
Joined: 28 Feb 2005
Posts: 250
|
| Posted: Mon Apr 10, 2006 3:41 am Post subject:
Re: Building a PHP-lite like Axis
|
|
|
On Sun, 09 Apr 2006 10:29:52 -0700, tomviolin wrote:
| Quote: |
What I am observing is that, even though I have, for example, disabled
MySQL support, the mysql.c file is still compiled into mysql.o, and it
is still linked into the php executable. This seems to indicate that
in order to substantially reduce the size of the executable, some
serious hacking will be required.
|
I've not looked into the PHP build scripts, but which version are you
trying to build? ISTR that PHP 4 built up to about 800K out of the box
once you eliminate all of the fluff, while PHP 5 built to something like
2.5 MB...
Typically most of the 'hacking' needed is in the build scripts...
--
o__
,>/'_ o__
(_)\(_) ,>/'_ o__
Yan Seiner, PE (_)\(_) ,>/'_ o__
Certified Personal Trainer (_)\(_) ,>/'_ o__
Licensed Professional Engineer (_)\(_) ,>/'_
Who says engineers have to be pencil necked geeks? (_)\(_) |
|
| Back to top |
|
|
Google
|
|
| Back to top |
|
|
|
|
The time now is Wed Dec 03, 2008 9:15 pm | All times are GMT
|
|
Mortgages | Proxy | Bad Credit Mortgages | Loans | Loans
|
|
Copyright © 2004-2005 DeniX Solutions SRL
|
|
|
|
Other DeniX Solutions sites:
Unix/Linux blog |
electronics forum |
medicine forum |
science forum |
|
|
Privacy Policy
|
Powered by phpBB © 2001, 2005 phpBB Group
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
Forum index
»
*nix
»
Linux
»
embedded
