Re: [Emc-users] Latency Warning Messages

On Tuesday 17 December 2019 12:44:47 Dave Matthews wrote: > On Tue, Dec 17, 2019 at 9:22 AM Peter C. Wallace wrote: > > You can get really bad base jitter if you try to run the base thread > > faster than the machine is capable of responding (the latency-tests > > default 40 KHz base thread is

Re: [Emc-users] Latency Warning Messages

On Tuesday 17 December 2019 13:41:09 Dave Matthews wrote: > On Tue, Dec 17, 2019 at 12:55 PM andy pugh wrote: > > On Tue, 17 Dec 2019 at 17:47, Dave Matthews wrote: > > > For those of us in the cheap seats how does the base thread > > > frequency relate to the maximum number of words per second

Re: [Emc-users] Latency Warning Messages

On Tuesday 17 December 2019 13:18:10 Eric Keller wrote: > In the past, I have had a reasonable amount of luck reducing real time > delays by building a custom kernel. Not sure if those kinds of gains > are still possible. And it's a lot of work unless you are using > realtime preempt. > > As

Re: [Emc-users] Latency Warning Messages

On Tue, Dec 17, 2019 at 2:00 PM John Dammeyer wrote: > > Actually I think it's at one pulse per two base periods. One to set the step > signals high, one to set them low. The document referenced by "bari", > > How to choose your base period: >

Re: [Emc-users] Latency Warning Messages

On Tue, 17 Dec 2019 at 19:00, John Dammeyer wrote: > > Actually I think it's at one pulse per two base periods. One to set the step > signals high, one to set them low. The parport driver offers a "reset" function that sets selected pins back to zero. You can run this later in the thread than

Re: [Emc-users] Latency Warning Messages

n Dammeyer > -Original Message- > From: Dave Matthews [mailto:n36...@gmail.com] > Sent: December-17-19 10:41 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Latency Warning Messages > > On Tue, Dec 17, 2019 at 12:55 PM andy pugh wrote: > > &

Re: [Emc-users] Latency Warning Messages

On Tue, Dec 17, 2019 at 12:55 PM andy pugh wrote: > > On Tue, 17 Dec 2019 at 17:47, Dave Matthews wrote: > > > For those of us in the cheap seats how does the base thread frequency > > relate to the maximum number of words per second sent to the parallel > > port? > > The system can send a

Re: [Emc-users] Latency Warning Messages

In the past, I have had a reasonable amount of luck reducing real time delays by building a custom kernel. Not sure if those kinds of gains are still possible. And it's a lot of work unless you are using realtime preempt. As far as Gene's problem with the beep, they are probably using the 8051

Re: [Emc-users] Latency Warning Messages

On Tue, 17 Dec 2019 at 17:47, Dave Matthews wrote: > For those of us in the cheap seats how does the base thread frequency > relate to the maximum number of words per second sent to the parallel > port? The system can send a maximum of one pulse per base period. -- atp "A motorcycle is a

Re: [Emc-users] Latency Warning Messages

On Tue, Dec 17, 2019 at 9:22 AM Peter C. Wallace wrote: > > You can get really bad base jitter if you try to run the base thread faster > than > the machine is capable of responding (the latency-tests default 40 KHz base > thread is too fast for some systems so you might get considerably better

Re: [Emc-users] Latency Warning Messages

On Tue, 17 Dec 2019, andy pugh wrote: Date: Tue, 17 Dec 2019 11:32:22 + From: andy pugh Reply-To: "Enhanced Machine Controller (EMC)" To: "Enhanced Machine Controller (EMC)" Subject: Re: [Emc-users] Latency Warning Messages On Mon, 16 Dec 2019 at 23:42,

Re: [Emc-users] Latency Warning Messages

On Mon, 16 Dec 2019 at 23:42, John Dammeyer wrote: > For example. The board in the machine at the moment generates a Servo Jitter > of 33217 and Base Jitter of 131983. That's fairly terrible. Out of interest, how well does that machine work with Mach3? -- atp "A motorcycle is a bicycle

Re: [Emc-users] Latency Warning Messages

On Monday 16 December 2019 23:12:20 bari wrote: > On 12/16/19 9:02 PM, Gene Heskett wrote: > > intel cpus are better than equ dated amd's, my old quad core phenom > > was phenominally bad at latency-test. 100+ microseconds. New 9th gen > > 6 core i5, 4 or 5 microseconds. Till kmail beeps the

Re: [Emc-users] Latency Warning Messages

On 12/16/19 9:02 PM, Gene Heskett wrote: > intel cpus are better than equ dated amd's, my old quad core phenom was > phenominally bad at latency-test. 100+ microseconds. New 9th gen 6 core > i5, 4 or 5 microseconds. Till kmail beeps the chassis speaker, then its > 200 u-secs. BIOS issues likely

Re: [Emc-users] Latency Warning Messages

On Monday 16 December 2019 21:17:40 John Dammeyer wrote: > > > For example. The board in the machine at the moment generates a > > > Servo Jitter of 33217 and Base Jitter of 131983. > > > > Thats pretty slow john, I'd take that machine to the office and > > bring out the office machine. It

Re: [Emc-users] Latency Warning Messages

On 12/16/19 5:40 PM, John Dammeyer wrote: > > For example. The board in the machine at the moment generates a Servo Jitter > of 33217 and Base Jitter of 131983. > For the MESA and PP configuration I have: > BASE_PERIOD = 24000 > SERVO_PERIOD = 100 > > If I understood the document link

Re: [Emc-users] Latency Warning Messages

> > > > For example. The board in the machine at the moment generates a Servo > > Jitter of 33217 and Base Jitter of 131983. > Thats pretty slow john, I'd take that machine to the office and bring out > the office machine. It might just be faster. :) > Yes Gene, I sometimes wonder if there

Re: [Emc-users] Latency Warning Messages

On Monday 16 December 2019 18:40:35 John Dammeyer wrote: > > -Original Message- > > From: bari [mailto:bari00...@gmail.com] > > Sent: December-16-19 10:51 AM > > To: emc-users@lists.sourceforge.net > > Subject: Re: [Emc-users] Latency Warning Messages

Re: [Emc-users] Latency Warning Messages

> -Original Message- > From: bari [mailto:bari00...@gmail.com] > Sent: December-16-19 10:51 AM > To: emc-users@lists.sourceforge.net > Subject: Re: [Emc-users] Latency Warning Messages > > It depends on how you configure and run Linuxcnc with your intended > ha

Re: [Emc-users] Latency Warning Messages

the MESA once the testing and development is done. > > John > >> -Original Message- >> From: N [mailto:nicklas.karlsso...@gmail.com] >> Sent: December-16-19 9:38 AM >> To: Enhanced Machine Controller (EMC) >> Subject: Re: [Emc-users] Latency

Re: [Emc-users] Latency Warning Messages

On Monday 16 December 2019 12:38:18 N wrote: > > I bought 3 different low profile video cards to try and get rid of > > that latency message. The ultimate and best solution was to buy the > > MESA 7i92H. Does away with the parallel port completely. John > > Dammeyer > > The parrallel port cause

Re: [Emc-users] Latency Warning Messages

nced Machine Controller (EMC) > Subject: Re: [Emc-users] Latency Warning Messages > > > I bought 3 different low profile video cards to try and get rid of that > > latency > message. The ultimate and best solution was to buy the MESA 7i92H. Does > away with the paralle

Re: [Emc-users] Latency Warning Messages

> I bought 3 different low profile video cards to try and get rid of that > latency message. The ultimate and best solution was to buy the MESA 7i92H. > Does away with the parallel port completely. > John Dammeyer The parrallel port cause latency messages?

Re: [Emc-users] Latency Warning Messages

On Mon, 16 Dec 2019 at 05:47, Thomas D. Dean wrote: > Looks like the on-board video adapter shares main memory with the CPU. > Linuxcnc system requirements says this is a no=no. That advice might be outdated, I have many systems that seem perfectly happy with this. > Question: Will installing

Re: [Emc-users] Latency Warning Messages

le.com] > Sent: December-15-19 9:46 PM > To: 'Enhanced Machine Controller (EMC)' > Subject: [Emc-users] Latency Warning Messages > > My CNC computer was purchased several years ago from Sherline with CNC > installed. > > I have two disk drives. One has linuxcnc-2.7.14-wheezy.is

[Emc-users] Latency Warning Messages

My CNC computer was purchased several years ago from Sherline with CNC installed. I have two disk drives. One has linuxcnc-2.7.14-wheezy.iso and the other has linuxcnc-stretch-uspace-amd64.iso. On both OS's, I see 'unexpected latency warning messages', infrequent on 'wheezy' and 99% of the

Re: [Emc-users] latency excursions

On Sun, 23 Jul 2017, dave wrote: Date: Sun, 23 Jul 2017 10:37:09 -0700 From: dave <dengv...@charter.net> Reply-To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.ne

Re: [Emc-users] latency excursions

ntroller (EMC)" <emc-users@lists.sourceforge.net> Subject: [Emc-users] latency excursions dave@linuxcnc:~$ uname -a Linux linuxcnc 3.4-9-rtai-686-pae #1 SMP PREEMPT Debian 3.4.55-4linuxcnc i686 i686 i386 GNU/Linux task: 103857488 cycles, min=0.49, max=0.474214, avg=0.010993, 86 la

Re: [Emc-users] latency excursions

On Sunday 23 July 2017 11:48:19 dave wrote: > dave@linuxcnc:~$ uname -a > Linux linuxcnc 3.4-9-rtai-686-pae #1 SMP PREEMPT Debian > 3.4.55-4linuxcnc i686 i686 i386 GNU/Linux > > task: 103857488 cycles, min=0.49, max=0.474214, avg=0.010993, 86 > latency excursions (> 10x expected cycle time of

Re: [Emc-users] latency excursions

On Sun, 23 Jul 2017, dave wrote: Date: Sun, 23 Jul 2017 08:48:19 -0700 From: dave <dengv...@charter.net> Reply-To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforg

Re: [Emc-users] latency excursions

For me this or something similar i happening one of my computers at every startup. I think it is running smootly in between now but this have not always been the case, I removed a graphics card a while ago and might have changed things or simply a newer kernel. On Sun, 23 Jul 2017 08:48:19

[Emc-users] latency excursions

dave@linuxcnc:~$ uname -a Linux linuxcnc 3.4-9-rtai-686-pae #1 SMP PREEMPT Debian 3.4.55-4linuxcnc i686 i686 i386 GNU/Linux task: 103857488 cycles, min=0.49, max=0.474214, avg=0.010993, 86 latency excursions (> 10x expected cycle time of 0.01s) task: 25439189 cycles, min=0.49,

Re: [Emc-users] Latency problem with debian 7 and not with ubuntu 10.04

​Hi pierre the same ​was observed in my p4 asus 775i65G, really bad latencys on debian pae kernels, dont know if its a kernel issue or anything, switch back to 10.04 agh. regards rck 2016-05-24 15:41 GMT-03:00 Forum Deswysen : > Hello, > > i86 pentium 4

[Emc-users] Latency problem with debian 7 and not with ubuntu 10.04

Hello, i86 pentium 4 Fujitsu siemens scenic E600 : with ubuntu 10.04 and 2.7 linuxcnc *latency +/- 22,000 max* I format the pc and i install debian 7 and 2.7 linuxcnc *latency +/- 65,000 max* Why do you have an idea? Best regards, Pierre

[Emc-users] Latency?

I was testing the latency of this computer and I thought that it was doing pretty good, but over night there were some pretty significant latency spikes. I was afraid this was going to happen, it is an HP-Compaq dc5750 and the bios has virtually zero user settable power settings (the only thing

[Emc-users] Latency issues; machinekit Kernel

So i had some issued with drivers, but got around that by installing the machinekit-rtai kernel and then manually compile linuxcnc ontop of wheezy.. Well i dont think its optimal. The setup is a Core i5, 8gb ram and running SSD drivers in a raid 0 configuration. Lets say it boots like its on a

Re: [Emc-users] Latency issues; machinekit Kernel

On 2/27/15 9:20 AM, Andreas Pettersson wrote: But stock wheezy is 64bit and with the RT_PREEMPT kernel, you managed to compile linuxcnc with that? All i get when trying that is No realtime kernel present error.. :/ Yes, LinuxCNC runs fine on 64-bit RT-Preempt. You need the uspace flavor,

Re: [Emc-users] Latency issues; machinekit Kernel

: Re: [Emc-users] Latency issues; machinekit Kernel But stock wheezy is 64bit and with the RT_PREEMPT kernel, you managed to compile linuxcnc with that? All i get when trying that is No realtime kernel present error.. : The standard LinuxCNC wheezy ISO uses a RTAI kernel (and you can test

Re: [Emc-users] Latency issues; machinekit Kernel

: [Emc-users] Latency issues; machinekit Kernel But stock wheezy is 64bit and with the RT_PREEMPT kernel, you managed to compile linuxcnc with that? All i get when trying that is No realtime kernel present error.. : The standard LinuxCNC wheezy ISO uses a RTAI kernel (and you can test latency

Re: [Emc-users] Latency issues; machinekit Kernel

Sweet im gonna try that, having issues with PAE not claiming one of the memory modules. =) Thanks! // A Sebastian Kuzminsky skrev den 2015-02-27 18:26: On 2/27/15 9:20 AM, Andreas Pettersson wrote: But stock wheezy is 64bit and with the RT_PREEMPT kernel, you managed to compile linuxcnc

Re: [Emc-users] Latency issues; machinekit Kernel

So im guessing the step, where you do ./configure -a in the debian folder is void and null when running the RT_PREEMPT kernel, because it states there is no realtime kernel and refuses to configure. In effect i cant figure out which packages i need to install other than running the other

Re: [Emc-users] Latency issues; machinekit Kernel

On 2/27/15 11:44 AM, Andreas Pettersson wrote: So im guessing the step, where you do ./configure -a in the debian folder is void and null when running the RT_PREEMPT kernel, because it states there is no realtime kernel and refuses to configure. In effect i cant figure out which packages i

Re: [Emc-users] Latency issues; machinekit Kernel

On 2/27/15 11:17 AM, Andreas Pettersson wrote: Sweet im gonna try that, having issues with PAE not claiming one of the memory modules. =) This is a bug in our pae kernel - it actually has pae turned off, so you can only use the first 3.5 gigs or so. I punished the guy responsible for that

Re: [Emc-users] Latency issues; machinekit Kernel

Ah i see, i was considering rebuilding the kernel, so if this isnt working i will do that. But this could be useful to learn as well. - just reinstall for the 30th time this day.. *lmao* // Andreas Sebastian Kuzminsky skrev den 2015-02-27 19:21: On 2/27/15 11:17 AM, Andreas Pettersson wrote:

Re: [Emc-users] Latency issues; machinekit Kernel

yeah i figured, i got it working and are stressing it now, i wrote this for my own head - but will most likely google index pretty fast as well.. http://www.roughedge.se/blogg/2015/02/27/installing-linuxcnc-2-7-uspace-on-debian-wheezy/ Servothread 11347, Base thread 12665 while running 5

Re: [Emc-users] Latency issues; machinekit Kernel

: Re: [Emc-users] Latency issues; machinekit Kernel Are you running a standard Wheezy AMD64 install and the master buildbot installations as well then?? I can always reinstall, i rather have a 64bit OS than the PAE version anyday. =) // A Stock wheezy ISO works fine, I would try latency

Re: [Emc-users] Latency issues; machinekit Kernel

17:09:10 +0100 From: Andreas Pettersson andr...@roughedge.se Reply-To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Subject: Re: [Emc-users] Latency issues; machinekit Kernel Are you running

Re: [Emc-users] Latency issues; machinekit Kernel

, 27 Feb 2015 15:58:08 +0100 From: Andreas Pettersson andr...@roughedge.se Reply-To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Subject: [Emc-users] Latency issues; machinekit Kernel So i had some

Re: [Emc-users] Latency issues; machinekit Kernel

: [Emc-users] Latency issues; machinekit Kernel So i had some issued with drivers, but got around that by installing the machinekit-rtai kernel and then manually compile linuxcnc ontop of wheezy.. Well i dont think its optimal. The setup is a Core i5, 8gb ram and running SSD drivers in a raid

Re: [Emc-users] Latency issues; machinekit Kernel

If its stable running after 15min of basicly 100% cpu load - do i need to bother running it any longer? // Andreas Sebastian Kuzminsky skrev den 2015-02-27 19:49: On 2/27/15 11:44 AM, Andreas Pettersson wrote: So im guessing the step, where you do ./configure -a in the debian folder is void

Re: [Emc-users] Latency issues; machinekit Kernel

On Fri, Feb 27, 2015, at 02:13 PM, Andreas Pettersson wrote: If its stable running after 15min of basicly 100% cpu load - do i need to bother running it any longer? Is if 15 minutes of doing the same load thing over and over? Or doing a lot of different things? CPU loading usually doesn't

Re: [Emc-users] Latency issues; machinekit Kernel

Ah well yeah the GPU was an issue, running the onboard in the i5 - but giving it more resources helped alot. For I/O i ran a create and move file around and delete script that uses /dev/urandom and create, random sized file, gzips it, moves it a couple of times to random folder and then

Re: [Emc-users] Latency issues; machinekit Kernel

On 2/27/15 3:37 PM, John Kasunich wrote: Stress it in a variety of ways - transfer large files on the network, drag windows around, play a youtube video, run glxgears, walk away until the screensaver and/or power management kicks in, etc. Also try disk I/O and USB hotplug events. --

Re: [Emc-users] Latency problem

Dave wrote: You won't have any issues with the D525MW and an SSD on that Pico power supply. I have used several and never had a failure yet. Some have 3+ years on them now..running 24x7. Yes, the D525MW is supposed to have a normal power draw of 13 W, while a worst-case maximum test was

Re: [Emc-users] Latency problem

Message: 1 Date: Mon, 25 Mar 2013 15:25:31 -0400 From: Kent A. Reed kentallanr...@gmail.com Subject: Re: [Emc-users] Latency problem To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Message-ID: 5150a4ab.6050...@gmail.com Content-Type: text/plain; charset=ISO-8859-1; format

Re: [Emc-users] Latency problem

continuing our dialog about the latency spikes bjørn is observing with his Intel D525MW MB On 3/28/2013 5:23 AM, bjørn wrote: that I bought the power supply together with the D525MW board. here are a link - http://www.ebay.com/itm/160721043666?ssPageName=STRK:MEWAX:IT_trksid=p3984.m1438.l2649

Re: [Emc-users] Latency problem

snip /I keep mulling over this 5-6 hours observation. I know we recommend running the latency test for a long time but I don't think we understand why these spiking events show up rarely. It's all well and good to blame power saving features in modern CPUs but they are functioning over much

Re: [Emc-users] Latency problem

On Mar 28, 2013 2:58 PM, bjørn bj...@spesmek.no wrote: snip /I keep mulling over this 5-6 hours observation. I know we recommend running the latency test for a long time but I don't think we understand why these spiking events show up rarely. It's all well and good to blame power saving

Re: [Emc-users] Latency problem

You won't have any issues with the D525MW and an SSD on that Pico power supply. I have used several and never had a failure yet. Some have 3+ years on them now..running 24x7. Dave On 3/28/2013 2:53 PM, bjørn wrote: snip /I keep mulling over this 5-6 hours observation. I know we recommend

Re: [Emc-users] Latency

On Mon, Mar 25, 2013 at 2:36 AM, Dave e...@dc9.tzo.com wrote: Has anyone tried running the latency test on the Intel H61, H77, or Z77 design motherboards using a CPU with the integrated HD graphics? Intel DH61AG + i3 2120T 2.6 GHz LGA1155

Re: [Emc-users] Latency problem

Am 20.03.2013 um 08:48 schrieb Bj?rn: I bougt this. http://www.ebay.com/itm/200542103383?ssPageName=STRK:MEWAX:IT_trksid=p3984.m1438.l2649 running the latest version of linuxcnc. specifically which version? I have a D525MW and get much better results Hypertreading off in bios, ISOLCPU is

Re: [Emc-users] Latency

Unless I am reading that incorrectly, that appears to be fine for a 1 ms servo thread, but would not work well for direct stepper control. The D525MW boards are really nice. I have used a lot of them over the last year plus and I have a bit of stockpile built up right now, but the Intel 525

Re: [Emc-users] Latency

On Mon, 25 Mar 2013, Dave wrote: Date: Mon, 25 Mar 2013 11:01:45 -0500 From: Dave e...@dc9.tzo.com Reply-To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Subject: Re: [Emc-users] Latency Unless

Re: [Emc-users] Latency

To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Subject: Re: [Emc-users] Latency Unless I am reading that incorrectly, that appears to be fine for a 1 ms servo thread, but would not work well for direct stepper control. The D525MW boards are really nice. I

Re: [Emc-users] Latency

I missed that board and the other integrated Celeron boards.Thanks for pointing those out. Let us know what you find. That Gigabyte board has a lot to like. What AMD MITX boards are known to work well? Dave I think I'll order this one to try out today:

Re: [Emc-users] Latency

On Mon, 25 Mar 2013, Dave wrote: Date: Mon, 25 Mar 2013 13:52:28 -0500 From: Dave e...@dc9.tzo.com Reply-To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net To: emc-users@lists.sourceforge.net Subject: Re: [Emc-users] Latency I missed that board and the other

Re: [Emc-users] Latency problem

On 3/25/2013 9:56 AM, Bjørn wrote: snipping off previous discussion now i have tested: boot with isolcpu(big improvement in general latency but still spikes) turn of smi, (improvement in general latency but still spikes) 'idle=poll' and 'nohlt'(little or no effect) acpi = off and api=off

[Emc-users] Latency

Has anyone tried running the latency test on the Intel H61, H77, or Z77 design motherboards using a CPU with the integrated HD graphics? A number of companies make them and they all seem to be socket 1155 boards. The boards cost $50-$130 each and a 35 watt CPU runs about $80. Thanks, Dave

Re: [Emc-users] Latency

On Sun, 24 Mar 2013, Dave wrote: Date: Sun, 24 Mar 2013 19:36:47 -0500 From: Dave e...@dc9.tzo.com Reply-To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net To: emc-users@lists.sourceforge.net Subject: [Emc-users] Latency Has anyone tried running the latency test

[Emc-users] Latency problem

I bougt this. http://www.ebay.com/itm/200542103383?ssPageName=STRK:MEWAX:IT_trksid=p3984.m1438.l2649 running the latest version of linuxcnc. Hypertreading off in bios, ISOLCPU is done. when runnnig latencytest and 3 x glxgears + some video i can run for 30 min and get: servo thread (1.0ms) max

Re: [Emc-users] Latency problem

Am 20.03.2013 um 08:48 schrieb Bjørn: I bougt this. http://www.ebay.com/itm/200542103383?ssPageName=STRK:MEWAX:IT_trksid=p3984.m1438.l2649 running the latest version of linuxcnc. specifically which version? I have a D525MW and get much better results Hypertreading off in bios, ISOLCPU

Re: [Emc-users] Latency problem

Am 20.03.2013 um 08:48 schrieb Bj?rn: I bougt this. http://www.ebay.com/itm/200542103383?ssPageName=STRK:MEWAX:IT_trksid=p3984.m1438.l2649 running the latest version of linuxcnc. specifically which version? I have a D525MW and get much better results Hypertreading off in bios, ISOLCPU is

Re: [Emc-users] Latency problem

Regards Bjorn I am running 10.04 LTS and LinuxCNC 2.5.2 when you say, boot the kernel with the option 'idle=poll' is this done the same way as isolcpu? yes try both 'idle=poll' and 'nohlt' see section 4 of http://wiki.linuxcnc.org/cgi-bin/wiki.pl?XenomaiKernelPackages this applies

Re: [Emc-users] Latency test

2012/3/31 Alwyn McLeod mcleod.al...@gmail.com: When I run the latency test, I get Base thread jitter of 932659. In the config file the max. is set at 50,000. What You set in INI file is the length of the particular thread. I guess that length of base thread is set at 50'000 ns and length of

Re: [Emc-users] Latency test

The simple explanation is that is a lot of jitter. Look here to debug - http://wiki.linuxcnc.org/cgi-bin/wiki.pl?TroubleShooting I had a graphics card that ran at 200,000 when using the manufacturer 3d driver, but down to 40,000 with software 3d. On Sat, Mar 31, 2012 at 2:40 AM, Viesturs Lācis

Re: [Emc-users] Latency test

On Sat, 2012-03-31 at 08:00 +0200, Alwyn McLeod wrote: When I run the latency test, I get Base thread jitter of 932659. In the config file the max. is set at 50,000. When I load EMC2 I get a message Unexpected real time delay: check dmesg for details' as well RTAPI: ERROR:Unexpected

Re: [Emc-users] Latency test

On Sat, Mar 31, 2012 at 2:00 AM, Alwyn McLeod mcleod.al...@gmail.comwrote: When I run the latency test, I get Base thread jitter of 932659. In the config file the max. is set at 50,000. Being a novice as far as Ubuntu is concerned, I am at a loss as to how I can resolve these issues. Any

Re: [Emc-users] Latency test

On Saturday, March 31, 2012 01:32:39 PM Kirk Wallace did opine: On Sat, 2012-03-31 at 08:00 +0200, Alwyn McLeod wrote: When I run the latency test, I get Base thread jitter of 932659. In the config file the max. is set at 50,000. When I load EMC2 I get a message Unexpected real time

Re: [Emc-users] Latency - was Re: Which video card/driver for LinuxCNC?

that the coffee pot is empty because the coffee machine had a problem downloading the most recent bean roast sensing algorithm.   --- On Mon, 2/20/12, Jon Elson el...@pico-systems.com wrote: From: Jon Elson el...@pico-systems.com Subject: Re: [Emc-users] Latency - was Re: Which video card/driver for LinuxCNC

Re: [Emc-users] Latency - was Re: Which video card/driver for LinuxCNC?

) Subject: Re: [Emc-users] Latency - was Re: Which video card/driver for LinuxCNC? the allocation of computing resources seems to be a recurring theme with pc based machine controllers. while i have wished for an accesible pocket calculator gui more than one time while standing in front

Re: [Emc-users] Latency - was Re: Which video card/driver for LinuxCNC?

On Tue, 2012-02-21 at 03:47 -0800, charles green wrote: the allocation of computing resources seems to be a recurring theme with pc based machine controllers. while i have wished for an accesible pocket calculator gui more than one time while standing in front of a machining center console,

Re: [Emc-users] Latency - was Re: Which video card/driver for LinuxCNC?

It would be nice to know enough to debug latency issues, instead it feels like kludging around with no idea what is the cause. I suppose rtai has some tools if you know what you are doing. On Tue, Feb 21, 2012 at 1:12 PM, Kirk Wallace kwall...@wallacecompany.comwrote: On Tue, 2012-02-21 at

Re: [Emc-users] Latency - was Re: Which video card/driver for LinuxCNC?

On Tue, Feb 21, 2012 at 1:26 PM, Erik Friesen e...@aercon.net wrote: It would be nice to know enough to debug latency issues, instead it feels like kludging around with no idea what is the cause.  I suppose rtai has some tools if you know what you are doing. Do they? It's been a while since I

[Emc-users] Latency - was Re: Which video card/driver for LinuxCNC?

On 20 February 2012 06:14, Jon Elson el...@pico-systems.com wrote: Dropout wrote: A quick question, does latency matter for servo drives? Yes, absolutely. But, it is not as critical. For software stepping, the base thread is typically around 20 us, and so a jitter of even 5 us is more

Re: [Emc-users] Latency - was Re: Which video card/driver for LinuxCNC?

2012/2/20 Roland Jollivet roland.jolli...@gmail.com So the norm is that a stepper system can run off the parallel port, but for DC servo's, extra hardware is required to sample the encoders. My question is; if one built a headless system(no video) and disabled drivers wherever possible,

Re: [Emc-users] Latency - was Re: Which video card/driver for LinuxCNC?

2012/2/20 Roland Jollivet roland.jolli...@gmail.com: My question is; if one built a headless system(no video) and disabled drivers wherever possible, would such a system be fast enough to run DC servo's and read the encoders on the parallel port? As Andrew mentioned, for normal speed with

Re: [Emc-users] Latency - was Re: Which video card/driver for LinuxCNC?

Roland Jollivet wrote: My question is; if one built a headless system(no video) and disabled drivers wherever possible, would such a system be fast enough to run DC servo's and read the encoders on the parallel port? You have to figure this out for each case. What is the maximum encoder

[Emc-users] Latency - was Re: Which video card/driver for LinuxCNC?

A quick question, does latency matter for servo drives? Dropout. On 2/19/2012 1:36 PM, Viesturs Lācis wrote: 2012/2/19 Alan Browningajbrowning2...@yahoo.com: Thanks for the quick response. So you build your machines from the ground up with new componenets? Due to budget limitations I have to

Re: [Emc-users] Latency - was Re: Which video card/driver for LinuxCNC?

On Sun, 19 Feb 2012, Dropout wrote: Date: Sun, 19 Feb 2012 13:45:41 -0500 From: Dropout drop...@sympatico.ca Reply-To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Subject: [Emc-users] Latency

Re: [Emc-users] Latency - was Re: Which video card/driver for LinuxCNC?

@lists.sourceforge.net Subject: [Emc-users] Latency - was Re: Which video card/driver for LinuxCNC? A quick question, does latency matter for servo drives? Dropout. Well at some amount of latency it matters but servo systems will tolerate a lot more latency than software step generation

Re: [Emc-users] Latency - was Re: Which video card/driver for LinuxCNC?

Dropout wrote: A quick question, does latency matter for servo drives? Yes, absolutely. But, it is not as critical. For software stepping, the base thread is typically around 20 us, and so a jitter of even 5 us is more than noticeable. But, on a typical servo system (or a stepper with

[Emc-users] Latency test [was: 3 threads, realtime errors]

Gentle persons: Andy Pugh's aside to Tom Easterday I found that having a webcam tab causes realtime errors in my otherwise well-behaved D510MO setup. should be a reminder to all of us that the latency-test results we post for different systems are not immutable. They may be helpful when

[Emc-users] latency calculation

I need know how to calculate latency in EMC2's latency-test. could anyone tell me the latency test's algorithm? -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE

Re: [Emc-users] latency calculation

The latency-test runs the following realtime component: http://git.linuxcnc.org/gitweb?p=emc2.git;a=blob;f=src/hal/components/timedelta.comp Each time a realtime thread runs, the time interval del=(now-last) is computed. The minimum and maximum del ever seen are computed in min_ and max_. The

[Emc-users] Latency and laptop.

Hello... I know that laptop's are not great for EMC, but I have few of them lying around and wish to use it. HP NX9005 work's now for longer time without some troubles. It has some strange thing. The layency in 1'st few minutes (up to 5) is high(in range 1ms). I don't know why but after that

Re: [Emc-users] Latency test numbers confusing

Neil Baylis wrote: 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

Re: [Emc-users] Latency test numbers confusing

If the GUI latency test gives a result of how EMC will perform I always wondered if abusing the computer during the test does not result in an overly conservative number. I never use the computer that is running EMC with any other program until the parts are done. (Am I the only one?) There

Re: [Emc-users] Latency test numbers confusing

@lists.sourceforge.net Date: Thu, 14 Jan 2010 07:05:49 -0500 Subject: Re: [Emc-users] Latency test numbers confusing If the GUI latency test gives a result of how EMC will perform I always wondered if abusing the computer during the test does not result in an overly conservative number. I never use the computer

Re: [Emc-users] Latency test numbers confusing

On Thu, Jan 14, 2010 at 4:05 AM, rng3 r...@verizon.net wrote: If the GUI latency test gives a result of how EMC will perform I always wondered if abusing the computer during the test does not result in an overly conservative number. I never use the computer that is running EMC with any other

Re: [Emc-users] Latency test numbers confusing

2010/1/14 Евгений Александрович evgeni_a...@mail.ru: Maybe the problem is CPU TERMAL TROLLING? I tested one PC, which had BIOS without option to disable CPU TERMAL TROLLING. I did not find any way how to use that PC with EMC2. Sorry I don't know what that is. I guess it means my BIOS has no

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