I apologize for being a bit snarky regarding my experience with the HP7800. I'm glad to hear Peter and Kirk have had success with this machine because I'd love to be able to use it! Have you guys found anything in particular that might cause latency spikes that I'm seeing? I installed 2.7-Wheezy from the pre-built live/install ISO and I'm using the onboard video. No extra hardware besides a USB mouse and keyboard. Also, I'm planning to get a Mesa 5i25 so maybe the latency isn't a problem?
regards, - Claude On Mon, Oct 12, 2015 at 2:11 PM, Gene Heskett <[email protected]> wrote: > On Monday 12 October 2015 12:21:32 Moses McKnight wrote: > > > It may depend on several things. I got an HP 7800 SFF and the latency > > looked pretty good, until I started using a custom usb device with it > > (necessary for my setup), and then I started getting realtime errors > > while running linuxcnc. Switched to a Dell 745 and have had no such > > problems. > > > > Moses > > I'll second that comment, I just picked one of those up used, 4Gigs of > DDR2 & some sort of a dual core intel running at 2.6Ghz, sans HD because > it had a legal copy of winderz on it & his keeping that dropped it to > 140 bucks. NBD as I had a spare sata 2T intended for amanda's use at > some point. > > Its been bulletproof of anything but MonPowers daily 2 cycle hits, > although this mornings 2 cycles turned in to 2.5 hours before my 20kw > standby wound down. > > Latency isn't quite that low, but I'm running a 5i25 card for the I/O so > no base-thread exists. Still tuning, but that box has Just Worked(TM). > > > On 10/12/2015 11:16 AM, Kirk Wallace wrote: > > > On 10/12/2015 08:57 AM, Claude Zervas wrote: > > >> Um, no, that HP 7800 SFF has *terrible* latency - it will spike up > > >> to 133,000 after 20 minutes or so. > > >> Based on Kirk's recommendation I bought the same one on ebay and > > >> installed LinuxCNC 2.7 but the latency was really bad. I tried > > >> turning off every power saving features in the bios and all the > > >> tricks listed in the LinuxCNC wiki without success. > > >> If someone has information about what can be done to fix the > > >> latency problems on these machines I would really appreciate it! So > > >> far this machine is basically an ugly door stop. > > >> > > >> thanks, > > >> - Claude > > > > > > Sorry if the HP didn't work for you. Mine are still working very > > > well. Peter has been using these too. You might check with Peter > > > Wallace at Mesa to see how his are working. > > > > ---------------------------------------------------------------------- > >-------- _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > Cheers, Gene Heskett > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author) > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > ------------------------------------------------------------------------------ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
