more up to date you could look it up there, for
now you migth try to find some info in the RTAI (www.rtai.org ) mailing
list archives cause RTAI had the same problems.
- Erwin
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Erwin Rol (Software Engineer) phone: +49-89-68050051
[EMAIL
On Sun, 2002-03-31 at 06:41, Michael Barabanov wrote:
Erwin Rol ([EMAIL PROTECTED]) wrote:
On Sat, 2002-03-30 at 20:44, [EMAIL PROTECTED] wrote:
The 2.4 kernel is still shaky. Our commercial version went to
2.4 _way_ too early and with a huge effort we have stable 2.4.16
On Sat, 2002-03-30 at 20:44, [EMAIL PROTECTED] wrote:
Since the topic has come up a couple of times. Here's our current
policy:
New patches for GPL RTLinux can go into the contributions
directory with little screening.
Well thats the point of a community project: release early,
RH 7.x has a bad compiler, use a other compiler. I think
they have called it kgcc. If you already used the correct
compiler i don't know what the problem is.
- Erwin
Ivan Ilyushin wrote:
I tried to compile kernel from rtlinux_kernel_2.4.tar.gz
v3.0
making comand make bzImage i got
I had the same problem when i tried to convert the latency
test example to C++. I thought to be smart and use nano seconds
everywhere this resulted in increasing latency. As far as
i can tell is it due to rounding errors when converting from
ticks to nanoseconds and back. I advice you to try
Here is a interesting link telling about the problem
several ppl (including myself are having) with VGA
cards.
http://www.zefiro.com/vgakills.txt
It is already a few years old , but it still seems to be
true.
- Erwin
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Alex Plouznikoff wrote:
Hi,
I was wandering if anyone had a brief description of the rt_task_struct
variables in rtai_sched.h. There is absolutly no comments in this file.
Thats not true, there are atleast 5 lines of comments ;-)
I think the idea is that you use the (well documented) API
Isn't it slowly getting time that the RTL mailing list admins
take responsibility and disable attachments ?
- Erwin
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For more information on Real-Time
Mr. Erwin some how has a nice sound to it , but the Erwin part would be
more than enough :-)
It doesn't like certain assembler constructs. When you could do is make
a header file with only the prototypes of the functions you need. For
example the
extern "C" void __set_64bit(long long unsigned
AFAIK ignoring SIGCHILD with signal(SIGCHILD,SIG_IGN);
is enough to prevent zombies.
- Erwin
Leechow wang wrote:
Hi,all,
I wrote a simple listening socket program.The father forks the two child
progresses.One is reporting the status of the system;the other is dealing
with the network
Hmmm it doesn't like some of the :: in the assembler statements.
The probably only working solution is to _not_ include any kernel
headers. The function prototypes you need you will have to put in a
separate header files. The same for defines and constants. this is the
way Pierre did it in LXRT
The list.h file in the linux kernel uses the C++ keyword "new" as a name
for a parameter and so the C++ pukes over it. A solution is a #define
new _new infront of the include and #undef new after it like.
#include rtl_cpp.h
extern "C" {
#define new _new
#include mbuff.h
Andrew Morton wrote:
Wilken Boie wrote:
David Olofson schrieb:
On Tuesday 20 March 2001 10:37, Erwin Rol wrote:
The low latency ppl also warm against using the linux framebuffer
drivers, although they
don't have hardrealtime so this warning might not be of importance
Sounds like you forgot extern "C". The linker looks C++ version of
the symbol which has the parameter type info in the symbol name (the
__FUiPvi part) and the module only has the C version without the type
info.
Just put a extern "C" { } around your include files when including from
a C++ source
Add yer own new and delete operators , see any C++ text on how to
do that. And disable exception handling of the compiler with
-fno-exceptions.
- Erwin
Hermann Streich wrote:
Hi,
I am trying to insmod a simple C++ modul.
Besides __builtin_new and __builtin_delete in there are 2
I would be interested to know this too, i tried a hacked up glibc
version ones but didn't continue with it because the lack of time.
- Erwin
Arnold Radtke wrote:
Hello,
does anyone know, if I can use setjump and longjump in the RTL context
or if there is another possibiltity to do this?
"C. W. Wright (1698)" wrote:
Has anyone examined the new 1.5gHz Pentium Pro-IV systems for linux/rtl
performance? Are there any issues that would suggest increase or decrease
in real-time (or non-realtime) performance? My current rtl project is
working fine on a 600mHz Athlon, but extra
One question to the list maintainers, are these "virus-mails" and
from ppl that are subscribed to the list or from outsiders ?
When from outsiders , why not block mails from ppl that aren't
subscribed ?
Or like mentioned earlier just bounce mails with attachments and
when at it also HTML mail.
"C. W. Wright (1698)" wrote:
Has anyone examined the new 1.5gHz Pentium Pro-IV systems for linux/rtl
performance? Are there any issues that would suggest increase or decrease
in real-time (or non-realtime) performance? My current rtl project is
working fine on a 600mHz Athlon,
, Erwin Rol wrote:
...
Or like mentioned earlier just bounce mails with attachments and
when at it also HTML mail.
Here is one way of doing it:
http://www.impsec.org/email-tools/procmail-security.html
- Erwin
Dmitri.
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Just mount the drive and use that path for the #2 stuff.
for exmple in #1 make a /mnt/new_rtl and mount the new drive there.
than make a lilo.conf file that uses /mnt/new_rtl/boot/vmlinux as
a kernel path and set the root partition correctly. This should
make it posible to boot both versions.
This screensaver is flagged by NORTON anti Virus as a
W95.Hybris worm.
- Erwin
Hahaha wrote:
Today, Snowhite was turning 18. The 7 Dwarfs always where very educated and
polite with Snowhite. When they go out work at mornign, they promissed a
*huge* surprise. Snowhite was anxious.
How about selectively blocking attachments, and only allow
things like .c .h .gz .bz2 to pass, that way one atleast has
to unzip the virus and start it or rename the file and start
it, this will probably be enough protection against little one
click accidents. I doubt RT-Linux programmers want to
I just got a mail from Pierre and one from Paolo a while back.
They are working hard on it , and it is starting to reach usable state.
For a real release date Paolo probably is the man to ask (as you did
:-).
- Erwin
[EMAIL PROTECTED] wrote:
Does anybody know what the current status of RTAI
You could take a look at LXRT, which is part of RTAI, that makes
it possible to promote a userspace thread (or process) to a Realtime
task. Due to the internal setup you will loose a few usec in latency,
but
i haven't seen more than 30usec latency (appart with my S3 card and
XFree
4.0, but thats
Erwin Rol wrote:
Hello All,
i hacked around a bit with the latency-graph lib that is used by the
low-latency ppl, and am almost finished to addapt it to RTAI.
Here already a sample output, where the red graph is the max latency,
the white one the average latency and the blue one
Mohsen Mahvash Mohammadi wrote:
salam azizam
avalan eltemas doa
digeh radi iran va televisomn iran az computer mishe greft.
dareh felan doay joshan kaber ra radio mikoneh.
vali heif ke nemish sabt kard.
chonke inja 8.30
diheh bayad ahia greft
shab ghadre khob nist ba ham ghahr basim.
Dag Huib,
I had weird problems with my dual p166MMX on a gigabyte board, the
scsi controler lost interupts and other weird stuff.
When switching to 2.4.x (normal linux kernel) i saw in my log files
endless warringings about APIC errors, those aren't logged in the 2.2.x
kernel.
I read
Jonathan Morton wrote:
well i gave up on XFRee 4.0.1 cause after changing about every BIOS
setting, recompiling X with several mentioned improvements, switching
video cards, switching RTAI-RTL and aback again, selectively disabling
XAA parts, i still
had peaks of 1msec and more in mmy
) || ioperm(0, 1024, 1))
^^^
replace with
0
Recompile X.
Michael has tried with nvidia and no problem.
On Sat, Nov 25, 2000 at 01:35:59AM +0100, Erwin Rol wrote:
OK here is what i have tried in the last few days.
The following part
Free 4.0.1 is only the messanger :-) So someone out there that
has a Athlon and a VIA KT133
chipset and XFree 4 that wants to try RT-Linux/RTAI ?
- Erwin
Erwin Rol wrote:
Hello all,
well i gave up on XFRee 4.0.1 cause after changing about every BIOS
setting, recompiling X with several
PROTECTED]
[EMAIL PROTECTED]
Erwin Rol wrote:
Seems like my S3Virge is not the only card with problems.
question to Richard:
What X-Server ? XFree-3.x or XFRee-4.X or some commercial one
XFree version 4.0.1 ..
I have seen jitter up to 50msec (without X maxium or 30usec) when
The NVidia
Hello All,
I am working on/with RTAI/RT-Linux for a while now in combination
with XFree 4.0.1 and have some problems that are maybe X related.
For the ones that don't know RTAI/RT-Linux it is an layer between the
hardware and the Linux kernel. The linux kernel never disables
interrupts
with
Michel Dänzer wrote:
Erwin Rol wrote:
I am running a G400MAX now and have simmulair problems, but not as bad.
Normal latency is around 10usecs, but when a lot of output is writen to
a X-terminal it jumps to 500usec. When enabling PCIretries (so writing to
the FIFO without checking
Seems like my S3Virge is not the only card with problems.
question to Richard:
What X-Server ? XFree-3.x or XFRee-4.X or some commercial one
I have seen jitter up to 50msec (without X maxium or 30usec) when
running
XFree-4.0.1 on with my S3Virge clone card. Disableing acceleration got
the
Seems like my S3Virge is not the only card with problems.
question to Richard:
What X-Server ? XFree-3.x or XFRee-4.X or some commercial one
I have seen jitter up to 50msec (without X maxium or 30usec) when
running
XFree-4.0.1 on with my S3Virge clone card. Disableing acceleration got
the
OK here we go again :-)
All the PCI options have some influence on the latency , but it still
jumps to 15 mili seconds
with one enter press in a console window. (also tried a failsafe sesion
with only one Xterminal, same result)
After some more source code reading i found that acceleration
Hello again,
well disabling acceleration in XFree 4.0.1 caused a maxium latency of
about
10usec when moving windows and typing enter key , which caused about 15
- 50 msec (mili, not micro)
delays with acceleration enabled . The result is ofcourse that X crawls
, moving windows is dead slow,
Paolo Mantegazza wrote:
Pierre Cloutier wrote:
Erwin Rol wrote:
Hello All,
I am (still) trying out LXRT and it looks good, but there are some
things
i don't really understand.
First when creating linux threads with pthread_create in user space is
it than
Hello All,
I am (still) trying out LXRT and it looks good, but there are some
things
i don't really understand.
First when creating linux threads with pthread_create in user space is
it than
always needed to also create a RT_TASK , even if it only should do
softrealtime ?
Is there a way to
Pierre Cloutier wrote:
Erwin Rol wrote:
Hey Pierre,
A small explanation what i am trying. Basicly it is just changing the
threads example in the lxrt directory to C++, and that worked OK. But i
found some dificulties. The c++ object i have in pthreads in
threadlocal data so i can
Hello All,
I have been looking at LXRT in RTAI 1.5 and saw there are basicly
two directories with LXRT, one lxrt and one lxrt-informed. I can't
really figure out which one to use, cause it seems the lxrt examples
don't compile with the header files in rtai-1.5/include/ directory.
And also i am
Are there any mirrors of the RTAI web site? cause i am
having problems reaching it for the last days.
TIA,
Erwin
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Yes use the broadcast address. Depending on what protocol you use
this will be something like 255.255.255.255 for IP or ff:ff:ff:ff:ff:ff
for ethernet or something like 0.0.0.0.ff.ff.ff.ff.ff.ff for IPX.
a good reference is UNIX network programmming by W. R. Stevens ISBN
0-13-490012-X
- Erwin
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Rodachtalweg 11, 81549 Muenchen, Germany
Erwin Rol (Software Engineer) phone: +49-89-68050051
[EMAIL PROTE
There is a article in the DrDobb's of march 2000 #310 about RT-Linux
not very in depth but maybe still interesting.
And nice to see a "windows" magazine to talk about something else.
Of course they have to mention NT doing Real time in the same way.
And in such a way that is looks like linux
seems they noticed :-)
http://www.timesys.com/ITDir_Correction.htm
Contrary to what is stated in the article posted on the IT-Director.com
website, TimeSys wishes to stress that RTAI is NOT proprietary. We'd
like to
thank Paolo Mantegazza [EMAIL PROTECTED] and his
fellow
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