On a side note I have just started testing a Dell Optiplex
GX520. When you first start the computer during the first 4 minutes there
are two 250,000 spikes in the test with or without SMI. So far they do not
repeat again even after the computer is on for several hours. Have had
similar
OK, so I started up the computer, then waited 1/2 hour. Then I ran the
latency test for 1/2 hour with no abuse, and the latency was below 7
microseconds. I have plenty of other computers, so I certainly don't
need to be doing anything else on my EMC box when it's running EMC.
Neil
2010/1/14 Neil Baylis neil.bay...@gmail.com:
What is SMI?
System Management Interrupt.
Wiki description:
http://en.wikipedia.org/wiki/System_Management_Mode
How to get round it in RTAI
http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?FixingSMIIssues
--
atp
Ah OK. The penny drops. When I get home tonight, I'll follow the
directions to disable SMI and see what happens.
Is SMI the facility that makes the fans speed up and slow down
according to how busy the system is? Or is that something else?
(My fans seem very dynamic, speeding up and slowing down
Ah OK. The penny drops. When I get home tonight, I'll follow the
directions to disable SMI and see what happens.
Is SMI the facility that makes the fans speed up and slow down
according to how busy the system is? Or is that something else?
(My fans seem very dynamic, speeding up and slowing down
2010/1/14 Neil Baylis neil.bay...@gmail.com:
Ah OK. The penny drops. When I get home tonight, I'll follow the
directions to disable SMI and see what happens.
It doesn't sound like SMI. That normally happens periodically. (in my
case it was every 64 seconds)
Is SMI the facility that makes the
On Thu, Jan 14, 2010 at 1:00 PM, Andy Pugh a...@andypugh.fsnet.co.uk wrote:
2010/1/14 Neil Baylis neil.bay...@gmail.com:
Ah OK. The penny drops. When I get home tonight, I'll follow the
directions to disable SMI and see what happens.
It doesn't sound like SMI. That normally happens
The text mode latency tests in /usr/realtime* have a different structure
and details than the graphical test. The graphical test more accurately
reflects what emc's realtime performance will be.
Besides involving additional emc code (rtapi), the graphical latency
test is usually run with two
I've been running the latency test from the applications menu as I
experiment with my graphics setup. Today I discovered the command-line
version, and ran that. What's confusing is that I get different
results depending on which one I run.
When I run the command-line version, the worst
My box recently went down, and I had to re-install everything. I thought it
would be a good idea to run another latency test after this fresh install.
My max Jitter came out to 20,602, while my previous max jitter was 18,592.
I have looked in the .ini and .hal file for a location where I can
The jitter really leads to two calculations (together with the step
driver timings you enter):
* the maximum step rate (bigger jitter - lower step rate)
* the direction setup/hold value (no real effect on step rate)
If your configuration still starts and doesn't give the unexpected
realtime
On Sun, 5 Apr 2009 12:10:08 -0700 (PDT), you wrote:
I have made many modifications to the ini file, and I do not really want to
paste all of the edited lines back in, (since running stepconfig again will
overwrite).
Yea - stepconf could do with a bit of tweaking so it doesn't overwrite
the
Don,
good thing you kept the .ini and .hal files - reminds me to make backups
once again cause I think I changed the files since the last backup ...
I copied my working config for the mill to 3 different machines (one
active, one backup and one to play with at home) by comparing a setup
Hi Peter
Thanks for the test and report. I tend to favor any but Intel. I've
had fairly good results with C3, C7, and almost any AMD. The point we
should take from your test is to try it.
There is a used computer store that I occasionally visit looking for
bargain boxes. I carry a Live CD
Hi Eric,
I had the same devastating experience with an 1 GHz board. After some
bothersome searching for the cause of extremely large latency values (above
7) I decided to get an old ASUS P3B-F board with a Pentium III, 350 MHz
processor from the attic. With the same setup, same hard diks
I guess the end question is, is this machine going to be able to run a stepper
driven lathe?
From the latency test window, servo thread was 218376, and base thread was
88463, this after firing up FF and hitting a couple of sites, m oving FF
around, and running glxgears.
Machine is an old HP
Hi you all,
Gene inspired me to try EMC on my holy desktop writing computer (will never
get in touch with the dirty workshop!). It is a AMC Athlon XP 2600. I can't
do anything to bring the latency test higher than 4288 and 5020 for servo
and base, resp.
I have tried 4 of my computers so far and
Hi All
I have the following latency test results for a PIII 1Ghz coppermine
based board I have.
They are as follows
servo thread 1ms max interval 1009707 ns
servo thread 1ms max jitter 13202 ns
base thread 25us max interval 43063 ns
base thread 25us max jitter 20339 ns
Can anybody tell me
you want to acheive if it's enough for
you or not.
Regards,
Alex
- Original Message -
From: Eric Parsonage e...@eparsonage.com
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Sent: Saturday, January 10, 2009 2:35 AM
Subject: [Emc-users] latency test results help
you might look for different video drivers? I dont know what chipset you
have or if its onboard or a card or what, but maybe it would affect cpu
usage to play the video?
On Mon, Dec 22, 2008 at 10:39 PM, Jeff Epler jep...@unpythonic.net wrote:
After identifying things that cause large
Hi, I bought an Asus P5LP-LE MB. I want to use this for emc2. My machine is
a a milling machine with DC servo motors. I am going to replace the Heidenhain
TNC 151 with the emc2 control. I have been running the latency test on the
MB. The best I have been able to do when running the test
On Mon, 2008-12-22 at 15:51 -0800, John Figie wrote:
P5LP-LE
According to this manual:
http://dl.getdropbox.com/u/16022/Screenshots/leonite_manual.PDF
this board has integrated graphics that share main memory with the CPU.
My guess is that's your problem.
Thanks,
Matt
After identifying things that cause large latencies, one possible
solution is to simply remember not to do that thing--at least if it's
something easy to not do, like start viewing a movie.
One nice thing about servo systems with hardware encoder counting is
that after a large latency, you'll get
Dave Engvall wrote:
Hi Jon,
I'm using an GeForce 2 Nvidia card and it smears a bit on some windows.
May have to try something else. Will check for a menu.
Non-manufacturer video cables are APPALLING crap! Just 5 wires in one
overall shield. I end up making my own video extension cables
tomp wrote:
yes, thanks John,
i never read an acceptable magnitude for latency in a servo system
Well, assuming you are running the servo thread at 1 KHz (1 ms interval)
and the servo code itself takes, say, 100 us on the average, then you
have a 9:1 margin. So, a sudden interruption by
Hello everyone
I didn't get far trying to set up EMC2
I decided to do the Latency Test first, having read both sets of
instructions. 'Configuration Wizard for Steeper Machines' 'EMC2 Getting
Started' both have identical instructions regarding the Latency Test.
Quote To run the test, from
Dave Houghton wrote:
Hello everyone
I didn't get far trying to set up EMC2
I decided to do the Latency Test first, having read both sets of
instructions. 'Configuration Wizard for Steeper Machines' 'EMC2 Getting
Started' both have identical instructions regarding the Latency Test.
Quote To
On Oct 30, 2008, at 8:41 AM, tomp wrote:
Stephen Wille Padnos wrote:
Dave Houghton wrote:
Hello everyone
I didn't get far trying to set up EMC2
I decided to do the Latency Test first, having read both sets of
instructions. 'Configuration Wizard for Steeper Machines' 'EMC2
Getting
-Original Message-
From: Stephen Wille Padnos [mailto:[EMAIL PROTECTED]
Sent: 30 October 2008 05:13 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Latency Test
Dave Houghton wrote:
Hello everyone
I didn't get far trying to set up EMC2
I decided to do the Latency
Dave Houghton wrote:
In general, you're supposed to type only what's after the $ (or #, if
you're supposed to do things as root). Everything before the $ is the
prompt printed by the terminal program. So you should be typing only
latency-test (without the quotes).
What are numbers are we
Dave Engvall wrote:
On Oct 30, 2008, at 8:41 AM, tomp wrote:
Stephen Wille Padnos wrote:
Dave Houghton wrote:
Hello everyone
I didn't get far trying to set up EMC2
I decided to do the Latency Test first, having read both sets of
instructions. 'Configuration Wizard for
Dave Houghton wrote:
Hello everyone
I didn't get far trying to set up EMC2
I decided to do the Latency Test first, having read both sets of
instructions. 'Configuration Wizard for Steeper Machines' 'EMC2 Getting
Started' both have identical instructions regarding the Latency Test.
Quote
-Original Message-
From: John Kasunich [mailto:[EMAIL PROTECTED]
Sent: 30 October 2008 06:24 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Latency Test
[EMAIL PROTECTED]:~ is your command line prompt. You don't want to
get rid of it. That is your system's way
-Original Message-
From: Jon Elson [mailto:[EMAIL PROTECTED]
Sent: 30 October 2008 06:42 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Latency Test
Jon wrote
You may have to type the command like this :
./latency-test
depending on how you downloaded and unpacked
-Original Message-
From: Wayne Parks [mailto:[EMAIL PROTECTED]
Sent: 30 October 2008 06:25 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Latency Test
Dave Houghton wrote:
In general, you're supposed to type only what's after the $ (or #, if
you're supposed to do
Dave Houghton wrote:
-Original Message-
From: Wayne Parks [mailto:[EMAIL PROTECTED]
Sent: 30 October 2008 06:25 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Latency Test
Dave Houghton wrote:
In general, you're supposed to type only what's after
Dave Houghton wrote:
-Original Message-
From: Wayne Parks [mailto:[EMAIL PROTECTED]
Sent: 30 October 2008 06:25 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Latency Test
Dave Houghton wrote:
In general, you're supposed to type only what's after
At 12:44 PM 10/30/2008, you wrote:
Now it says I should abuse the computer to find the worst case.
But do not run EMC2 or Stepconf.
Right now I have two questions.
1. Why would I what to do any thing to make it worst?
2. Why can I not run EMC2 and/or Stepconf.
Thanks
Dave
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users
the wiki page 'latency-test' says quote
Let the test run for at least 15 minutes while you run glxgears or a
similar application
Jon wrote
Because the latency test is a realtime application, and so is EMC2. You
can't run two realtime apps a the same time.
Regards.
John Kasunich
Hi John
Thanks John. So these computer's are not as good as they think they are!
Regards
Dave
Andre' wrote
They are assuming that while the machine is running a part you could be
designing the next part in a CAD program, while playing some background
music, and downloading a full length movie.
I always assumed the latency test, EMC and Stepconf all use the same parts
of the real
Dave Houghton wrote:
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users
the wiki page 'latency-test' says quote
Let the test run for at least 15 minutes while you run
Tomp wrote
dave,
yes, my test was running those programs
but just idle, i was gone for a week
and while idle it went 'over the top'
32K
so (imo) it doesnt matter much that you would never use those apps
i wasnt there to touch a key/open a file/drag a screen for a week
it was the 'system'
Dave Houghton wrote:
Tomp wrote
dave,
yes, my test was running those programs
but just idle, i was gone for a week
and while idle it went 'over the top'
32K
so (imo) it doesnt matter much that you would never use those apps
i wasnt there to touch a key/open a file/drag a screen for
Tomp wrote.
Dave
sorry if it sounds fatalistic
i had tried every trick known before this test, and began with a system
that seemed a good bet
i ran no cnc at same time
the results on the wiki are my best 1 day run, i think they are marginal
for stepper system
the result on same box after that
Dave Engvall wrote:
Hi,
Interesting idea to run for a long time. My numbers get bad enough
even in a short time.
I've installed the patched .ko for Ubuntu 6.06 smi and that improved
things greatly.
However, I'm still getting realtime messages. Can someone point me to
a checklist of
Dave Houghton wrote:
[EMAIL PROTECTED]:~
It (terminal) will not allow me to 'Backspace' or 'delete'
[EMAIL PROTECTED]:~
I think I'm really missing something here.
Mostly you can't. (Actually you can, if you really want to, but it is a
little complicated.)
That string is your prompt.
On Oct 30, 2008, at 7:51 PM, Jon Elson wrote:
Dave Engvall wrote:
Hi,
Interesting idea to run for a long time. My numbers get bad enough
even in a short time.
I've installed the patched .ko for Ubuntu 6.06 smi and that improved
things greatly.
However, I'm still getting realtime
Dave Houghton wrote:
Jon wrote
Because the latency test is a realtime application, and so is EMC2. You
can't run two realtime apps a the same time.
Regards.
John Kasunich
Hi John
Thanks John. So these computer's are not as good as they think they are!
You CAN, actually, run two,
Dave Engvall wrote:
ay have to try something else. Will check for a menu.
After the comments (JMK) this afternoon about problems with the Mazak
at Galesburg I
tried running a program on my machine while doing other things.
The program was a pretty generic mill a bunch of identical
On Oct 30, 2008, at 9:06 PM, John Kasunich wrote:
Dave Engvall wrote:
ay have to try something else. Will check for a menu.
After the comments (JMK) this afternoon about problems with the Mazak
at Galesburg I
tried running a program on my machine while doing other things.
The program
Dave Engvall wrote:
On Oct 30, 2008, at 9:06 PM, John Kasunich wrote:
Dave Engvall wrote:
ay have to try something else. Will check for a menu.
After the comments (JMK) this afternoon about problems with the Mazak
at Galesburg I
tried running a program on my machine while doing
I want to do the latency test. What does 'open a shell' mean? John
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Hello all,
I'm new to this group and also to EMC.
I have just succesfully installed Ubuntu 6.0.6 and EMC and updated it to 2.2
without problems.
When I tried to configure EMC however, I was confronted to the latency issue
(close to 100 uS) mentioned in the docuentation, related to MSI boards.
On Linux, modifying system files requires the use of administrator
(root) privileges. I would do an activity like this in the terminal
window with sudo:
sudo cp rtai_smp.ko /usr/realtime-2.6.15-magma/modules/rtai_smi.ko
(assuming you have already changed to the directory where you compiled
or
[EMAIL PROTECTED] wrote:
Hello all,
I'm new to this group and also to EMC.
I have just succesfully installed Ubuntu 6.0.6 and EMC and updated it to
2.2 without problems.
When I tried to configure EMC however, I was confronted to the latency
issue (close to 100 uS) mentioned in the
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