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
