[Emc-users] Debian Jessie kernel
I have installed Jessie on my ASUS x200ma as Wheezy didn't play well with my new toy. I am hoping to install Linuxcnc 2.7 and I was looking around for a RT kernel and I cant seem to find one. Any suggestions? Also how long do you folks think it might be before we see “official” 2.7 and Jessie? I do realize that my system setup will most likely not be reliable enough to make chips with, but I still have parts to make for my lathe anyway and I was hoping to at least get everything going and turn my servos some. I have a mesa 7i92 and the newer system is looking like it my be the way for me to go. -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Problems with ethernet driver.
So built another pc, for linuxcnc, and installed it with the 2.6 image. Installing works fine, and it finds the network card and all. But once booted it will not detect the wired network anymore. The chipset is something onboard, known as Intel i217-V. Its supposed to work with the e1000e driver from Intel and it seem to work during installation. But then it fails.. No idea why. Anyone has some input? I really dont wanna hassle with compiling RTAI on a Wheezy 7.8 manually and trying to get MESA card going from there... I started looking into it, and it looked like a pain. Kind regards, Andreas -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[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 ramdrive basicly.. Funny thing tho. Max Jitter: 815055 so far.. At a Max interval of 1815032. I find these numbers extremly high? Shouldnt they be alot.. well lower? // Andreas -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
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, which lives in a different place in the deb archive, details here: http://linuxcnc.org/docs/2.7/html/getting-started/index.html#_alternate_install_methods If you're building linuxcnc from source, configure with --with-realtime=uspace. -- Sebastian Kuzminsky -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Latency issues; machinekit Kernel
On Fri, 27 Feb 2015, Andreas Pettersson wrote: Date: Fri, 27 Feb 2015 17:20:53 +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 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 by just booting from a USB stick, no need to install) // A Peter C. Wallace skrev den 2015-02-27 17:15: On Fri, 27 Feb 2015, Andreas Pettersson wrote: Date: Fri, 27 Feb 2015 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 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 with that first Peter C. Wallace skrev den 2015-02-27 16:20: On Fri, 27 Feb 2015, Andreas Pettersson wrote: Date: Fri, 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 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 ramdrive basicly.. Funny thing tho. Max Jitter: 815055 so far.. At a Max interval of 1815032. I find these numbers extremly high? Shouldnt they be alot.. well lower? // Andreas Thats pretty bad, do you have all power management/fan control off in the BIOS? I have a newer MB (ASRock H97M with a Pentium G3258 and built in Intel NIC =21x) that has about 4 usec latency with the stock Wheezy RTAI kernel I didnt try the intel 21x MAC with the RTAI kernel but it works fine with the stock wheezy Preemt-RT kernel (3.2.something) -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your ()_() signature to help him gain world domination. -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your ()_() signature to help him gain world domination. -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software
Re: [Emc-users] Latency issues; machinekit Kernel
Ah that worked quite well, but only utilized a fraction of the ram properly.. Got the latency down to 3500 with that, its an acceptable speed.. im little bit worried about the ram tho.. anyway, gonna try to get this 6i25 card running next.. // A Peter C. Wallace skrev den 2015-02-27 17:31: On Fri, 27 Feb 2015, Andreas Pettersson wrote: Date: Fri, 27 Feb 2015 17:20:53 +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 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 by just booting from a USB stick, no need to install) // A Peter C. Wallace skrev den 2015-02-27 17:15: On Fri, 27 Feb 2015, Andreas Pettersson wrote: Date: Fri, 27 Feb 2015 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 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 with that first Peter C. Wallace skrev den 2015-02-27 16:20: On Fri, 27 Feb 2015, Andreas Pettersson wrote: Date: Fri, 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 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 ramdrive basicly.. Funny thing tho. Max Jitter: 815055 so far.. At a Max interval of 1815032. I find these numbers extremly high? Shouldnt they be alot.. well lower? // Andreas Thats pretty bad, do you have all power management/fan control off in the BIOS? I have a newer MB (ASRock H97M with a Pentium G3258 and built in Intel NIC =21x) that has about 4 usec latency with the stock Wheezy RTAI kernel I didnt try the intel 21x MAC with the RTAI kernel but it works fine with the stock wheezy Preemt-RT kernel (3.2.something) -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your ()_() signature to help him gain world domination. -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your ()_() signature to help him gain
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 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, which lives in a different place in the deb archive, details here: http://linuxcnc.org/docs/2.7/html/getting-started/index.html#_alternate_install_methods If you're building linuxcnc from source, configure with --with-realtime=uspace. -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
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 configure and see what it crashes on.. (a step that ive got stuck on at several times). // Andreas 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 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, which lives in a different place in the deb archive, details here: http://linuxcnc.org/docs/2.7/html/getting-started/index.html#_alternate_install_methods If you're building linuxcnc from source, configure with --with-realtime=uspace. -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
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 need to install other than running the other configure and see what it crashes on.. (a step that ive got stuck on at several times). The docs on building LinuxCNC are a bit scattered and probably incomplete out of date, but try this page: http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Uspace -- Sebastian Kuzminsky -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
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 bug... (it was me) Give rt-preempt a try, someone who actually knows what they were doing built that kernel, and it works fine (as long as it meets you latency requirements on your hardware). -- Sebastian Kuzminsky -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
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: 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 bug... (it was me) Give rt-preempt a try, someone who actually knows what they were doing built that kernel, and it works fine (as long as it meets you latency requirements on your hardware). -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
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 glxgears, gzip -c /dev/urandom /dev/null, stress -c 16 -l 16 -m 16 -t1 4400 So i think im in the clear now. =) Uspace build could handle alot more punishment. =) // 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 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 configure and see what it crashes on.. (a step that ive got stuck on at several times). The docs on building LinuxCNC are a bit scattered and probably incomplete out of date, but try this page: http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Uspace -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Latency issues; machinekit Kernel
On Fri, 27 Feb 2015, Andreas Pettersson wrote: Date: Fri, 27 Feb 2015 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 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 with that first Peter C. Wallace skrev den 2015-02-27 16:20: On Fri, 27 Feb 2015, Andreas Pettersson wrote: Date: Fri, 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 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 ramdrive basicly.. Funny thing tho. Max Jitter: 815055 so far.. At a Max interval of 1815032. I find these numbers extremly high? Shouldnt they be alot.. well lower? // Andreas Thats pretty bad, do you have all power management/fan control off in the BIOS? I have a newer MB (ASRock H97M with a Pentium G3258 and built in Intel NIC =21x) that has about 4 usec latency with the stock Wheezy RTAI kernel I didnt try the intel 21x MAC with the RTAI kernel but it works fine with the stock wheezy Preemt-RT kernel (3.2.something) -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your ()_() signature to help him gain world domination. -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your ()_() signature to help him gain world domination. -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
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.. :/ // A Peter C. Wallace skrev den 2015-02-27 17:15: On Fri, 27 Feb 2015, Andreas Pettersson wrote: Date: Fri, 27 Feb 2015 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 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 with that first Peter C. Wallace skrev den 2015-02-27 16:20: On Fri, 27 Feb 2015, Andreas Pettersson wrote: Date: Fri, 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 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 ramdrive basicly.. Funny thing tho. Max Jitter: 815055 so far.. At a Max interval of 1815032. I find these numbers extremly high? Shouldnt they be alot.. well lower? // Andreas Thats pretty bad, do you have all power management/fan control off in the BIOS? I have a newer MB (ASRock H97M with a Pentium G3258 and built in Intel NIC =21x) that has about 4 usec latency with the stock Wheezy RTAI kernel I didnt try the intel 21x MAC with the RTAI kernel but it works fine with the stock wheezy Preemt-RT kernel (3.2.something) -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your ()_() signature to help him gain world domination. -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your ()_() signature to help him gain world domination. -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored
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 Peter C. Wallace skrev den 2015-02-27 16:20: On Fri, 27 Feb 2015, Andreas Pettersson wrote: Date: Fri, 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 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 ramdrive basicly.. Funny thing tho. Max Jitter: 815055 so far.. At a Max interval of 1815032. I find these numbers extremly high? Shouldnt they be alot.. well lower? // Andreas Thats pretty bad, do you have all power management/fan control off in the BIOS? I have a newer MB (ASRock H97M with a Pentium G3258 and built in Intel NIC =21x) that has about 4 usec latency with the stock Wheezy RTAI kernel I didnt try the intel 21x MAC with the RTAI kernel but it works fine with the stock wheezy Preemt-RT kernel (3.2.something) -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your ()_() signature to help him gain world domination. -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Latency issues; machinekit Kernel
On Fri, 27 Feb 2015, Andreas Pettersson wrote: Date: Fri, 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 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 ramdrive basicly.. Funny thing tho. Max Jitter: 815055 so far.. At a Max interval of 1815032. I find these numbers extremly high? Shouldnt they be alot.. well lower? // Andreas Thats pretty bad, do you have all power management/fan control off in the BIOS? I have a newer MB (ASRock H97M with a Pentium G3258 and built in Intel NIC =21x) that has about 4 usec latency with the stock Wheezy RTAI kernel I didnt try the intel 21x MAC with the RTAI kernel but it works fine with the stock wheezy Preemt-RT kernel (3.2.something) -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your ()_() signature to help him gain world domination. -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
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 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 configure and see what it crashes on.. (a step that ive got stuck on at several times). The docs on building LinuxCNC are a bit scattered and probably incomplete out of date, but try this page: http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Uspace -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
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 cause latency issues. It's things like poorly done power management (in the BIOS or the kernel), or graphics drivers, or . We had one computer that had great latency until you dragged a window around on the screen. Then the GPU would take hold of the bus in order to redraw the window, and everything else screeched to a halt for hundred of microseconds. 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. -- John Kasunich jmkasun...@fastmail.fm -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Introduction and a couple questions
On 2/21/2015 6:27 PM, Kirk Wallace wrote: On 02/21/2015 03:42 PM, Brent Loschen wrote: Greetings everyone! New guy here. I've been following the group for several weeks and feel it's time for an intro and to get some suggestions for a small project I'm working on. Welcome to the world of LinuxCNC. Thank you Andy P., Mark W., and Peter W. for your responses to my original post - most helpful!. My apologies for this delayed response. I've been reading everything I can, and I'm weighing the various options for the desktop mill (to practice on with steppers) vs the Bridgeport (brushed DC servo ) conversion down the road. I'm not sure if some of the components used in CNC systems really do have multiple names for the same functionality, or if there are subtle differences between them. For instance is a motion controller the same as a PLC or FPGA? In certain contexts, I get the impression that they are the same, yet in others, a motion controller seems to be a programmable device used for fixed functionality i.e. robotic pick and place. In my world, PLC's and FPGA's are discrete semiconductor components, not complete boards controlled by them! Another question I can't seem to answer is, what's the fundamental difference between using a standard bit banged pport vs using something like 7i43 or a bus connected 5i25?In the default case (no special hardware), my understanding is that LCNC toggles the lines of the pport (step/direction signals?) which are connected to a stepper drive. What I've not been able to answer, is how the fundamentals change when using, say a 7i43, connected to the same port? Instead of sending pulses out the pport, LCNC must instead be sending some kind of higher level data stream (possibly lower bandwidth? ) to the 7i43 where it gets converted to precisely timed step/dir pulses - is that right? If so, what is that data and how is it different from step/dir signals in the default case? Can anyone comment on the differences or point me to documentation that explains it? Along the same lines, I've wondered how acceleration/deceleration is handled. Is it always manged by LCNC regardless of bit banging or additional hardware, or do FPGA/PLC based boards ever handle that too? Thanks, Brent -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
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 deletes it. (same i use for grading webservers when doing node.js work). Did not do the youtube thing - but ran glxgears x 5, and gzip -c /dev/urandom /dev/null. But i imagine some more stuff needs to be tested.. the APM is turned off so is also the CPU C instructions for throttling. Thanks for help anyway. =) // Andreas John Kasunich skrev den 2015-02-27 23:37: 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 cause latency issues. It's things like poorly done power management (in the BIOS or the kernel), or graphics drivers, or . We had one computer that had great latency until you dragged a window around on the screen. Then the GPU would take hold of the bus in order to redraw the window, and everything else screeched to a halt for hundred of microseconds. 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. -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
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. -- Sebastian Kuzminsky -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Introduction and a couple questions
On Fri, 27 Feb 2015, Brent Loschen wrote: Date: Fri, 27 Feb 2015 15:24:48 -0700 From: Brent Loschen brent.losc...@gmail.com Reply-To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net To: emc-users@lists.sourceforge.net Subject: Re: [Emc-users] Introduction and a couple questions On 2/21/2015 6:27 PM, Kirk Wallace wrote: On 02/21/2015 03:42 PM, Brent Loschen wrote: Greetings everyone! New guy here. I've been following the group for several weeks and feel it's time for an intro and to get some suggestions for a small project I'm working on. Welcome to the world of LinuxCNC. Thank you Andy P., Mark W., and Peter W. for your responses to my original post - most helpful!. My apologies for this delayed response. I've been reading everything I can, and I'm weighing the various options for the desktop mill (to practice on with steppers) vs the Bridgeport (brushed DC servo ) conversion down the road. I'm not sure if some of the components used in CNC systems really do have multiple names for the same functionality, or if there are subtle differences between them. For instance is a motion controller the same as a PLC or FPGA? In certain contexts, I get the impression that they are the same, yet in others, a motion controller seems to be a programmable device used for fixed functionality i.e. robotic pick and place. In my world, PLC's and FPGA's are discrete semiconductor components, not complete boards controlled by them! A PLC or FPGA _can_ both be motion controllers (they are both programable logic devices though a PLC to me is a control appliance in a box where a FPGA is a chip) Another question I can't seem to answer is, what's the fundamental difference between using a standard bit banged pport vs using something like 7i43 or a bus connected 5i25?In the default case (no special hardware), my understanding is that LCNC toggles the lines of the pport (step/direction signals?) which are connected to a stepper drive. What I've not been able to answer, is how the fundamentals change when using, say a 7i43, connected to the same port? Instead of sending pulses out the pport, LCNC must instead be sending some kind of higher level data stream (possibly lower bandwidth? ) to the 7i43 where it gets converted to precisely timed step/dir pulses - is that right? If so, what is that data and how is it different from step/dir signals in the default case? Can anyone comment on the differences or point me to documentation that explains it? Because high speed operations like encoder counting and step generation may be required at rates that are difficult for a general purpuse CPU (like PC) to do, off-loading these operations to external logic allows improved performance. For step generation, LinuxCNC specifies the step rate and the external hardware generate pulses at this rate until updated by linuxcnc (updates occur at the servo thread rate typically 1 KHz) Along the same lines, I've wondered how acceleration/deceleration is handled. Is it always manged by LCNC regardless of bit banging or additional hardware, or do FPGA/PLC based boards ever handle that too? As far as I know acceleration is always handled enirely by LinuxCNC Though if you had either a slow servo thread or needed extreme acceleration, it could easily be added to the step generation logic Thanks, Brent -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your ()_() signature to help him gain world domination. -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Introduction and a couple questions
On 27 February 2015 at 22:24, Brent Loschen brent.losc...@gmail.com wrote: If so, what is that data and how is it different from step/dir signals in the default case? Can anyone comment on the differences or point me to documentation that explains it? It might help to start with the parport stepgen. That has two functions. The slow function runs every time the servo-thread runs, typically every 1mS. It reads in the next position target from HAL, looks at where it is now, and calculates a step-rate required to get to that position by the time the next update comes in in 1mS. Then the base-thread runs about every 25uS and either makes a pulse or doesn't make a pulse depending on whether one is needed to maintain the step rate requested by the servo thread. In the case of a Pico or Mesa p-port connected FPGA card the first step looks just the same. Code running on the PC looks at position and target and decides what step-rate is needed. But this data is then passed to the FPGA as data on the EPP bus, and the actual steps are generated by the FPGA. The big difference is step-rate resolution. The base clock of the bit-banged solution is 25kHz. The FPGA card timer resolution is around 10Mhz. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
