The firmware for the D525MW has been revised a few times as I recall. I had an issue with one board (I thought) and I reflashed the bios with the latest firmware, but the problem was elsewhere.
>>I can watch HD video on my cell phone but not on these PC's. Good thing we are using them to control a CNC machine. That's ok as my $100 Blueray player has no idea what to do with Gcode. ;-) Dave On 12/12/2012 5:49 PM, Sven Wesley wrote: > 2012/12/12 Gene Heskett<[email protected]> > >> >> I will say it. If its a 64 bit install, then it is not the rtai patched >> kernel, and the results predictably will be poorer. >> >> >> > Read my post again. There are two different PC's involved in my tests. One > is now installed with 64 bit Ubuntu - not LinuxCNC. The other one is > installed with LinuxCNC. > > > > >> Neither of my machines has ever exceeded 8u-s, with only one stick of >> memory in them, 2Gb IOW. Latencyplot has been running on the lathes >> machine for about an hour, base-thread peak is 5 u-s, servo-thread peak is >> 5 u-s. >> >> > Well, good for you and I would be glad to share that experience. But the > fact remains, I have two D5252MW's and none of them have been close to your > levels. Did you push the hardware? Did you start a download, a browser, > glxgears? if I let it idle of course it will look good. That is not > realistic though and as I have stated earlier it's enough to start a > Firefox to totally destroy the figures. Looks a lot better now when both > memory banks are used, still double up from your latency. > I wonder if this board has changed too much over releases, maybe we don't > have the same hardware if we dig into the board itself. > > > >> >>> I don't think you changed the graphics driver just by lowering the >>> latency. I have not done much Linux stuff in years, but I'm wondering >>> what X graphics driver you are using? Can you force the graphics driver >>> into some VGA totally software render mode? >>> >>> Also remote into it, and run it as a headless station. I should do this >>> and see how it performs. Maybe next time I have a few hours around the >>> house (hah! not in the next few weeks…) I'll run that test. >>> >>> >>>> One thing though, I filled one of the boards with 8 GB RAM (2x4). That >>>> board is running 64 bit Ubuntu in the office and it happily reported 8 >>>> GB even though the hardware spec says max 4 GB. It seems that 4 GB is >>>> a soft limit. >>>> >>> Running a 32 bit kernel? I don't think you'll be able to address over 4g >>> via sw. Maybe they expect people to run windows, not Linux! >>> >>> Interesting that you can put the RAM in, as like you, I had assumed that >>> it was not just a SW limit. >>> >>> Thanks; >>> >>> John A. Stewart. >>> >> A 64 bit linux that has a problem with even 64Gb of ram should have a bug >> report filed. 32 bit however has to jump through some time consuming >> hoops. >> >> >> > I wrote soft limit. Not software limit. The board specification says max 4 > GB RAM and it can be rewritten into "is only guaranteed to work with 4 GB, > but can handle more on your own risk". The board itself is a 64 bit > architecture. The software limit theoretically for a 64 bit system is 2^64 > bytes (16 exabytes). I have a bunch of blade servers at the office with > 300+ GB RAM. > I did the remote test earlier (also reported to this list) and the figures > are better. Have in mind that half of this list will stupidify you if you > suggest running two PC's at the same time. > The graphics driver of this board share memory with the OS, when going down > in resolution it will affect the memory usage. The desktop also becomes a > bit more responsive but looks like crap in the lower res when the same > monitor is used. Nevertheless it was no real performance impact. I can > watch HD video on my cell phone but not on these PC's. Probably they will > be used as automation controllers, end up in a CNC cabinet will not happen. > > Regards, > Sven > ------------------------------------------------------------------------------ > LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial > Remotely access PCs and mobile devices and provide instant support > Improve your efficiency, and focus on delivering more value-add services > Discover what IT Professionals Know. Rescue delivers > http://p.sf.net/sfu/logmein_12329d2d > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
