I get that but we now have 2 debian installations giving crap and a fedora installation looking vaguely right. (scratch scratch. . . . .)
j. On Wed, Apr 25, 2012 at 8:13 PM, Lars Segerlund <[email protected]>wrote: > I should point out that I haven't tun RT on this specific machine > before, and it can be machine related. > > 2012/4/25 Jan de Kruyf <[email protected]>: > > Lars, hi > > > > What distribution are you using? Ubuntu? > > > > j. > > > > > > > > On Wed, Apr 25, 2012 at 12:47 PM, Lars Segerlund > > <[email protected]>wrote: > > > >> Yes I looked at it, and the rtapi part of emc, has something similar, > >> preallocation and prefaulting the stack .... > >> > >> But I will give it another look, also a bit busy .... I will try to > >> find the cause of the pagefault, which should be easy with the > >> debugging framework in the linux rt-preempt kernel, it can trigger on > >> latency and I'll get a 'call trace' ... let's hope I have debugging > >> enabled. > >> > >> / regards, Lars. > >> > >> 2012/4/25 Jan de Kruyf <[email protected]>: > >> > Lars I am extremely interested in your graft. Just a bit busy at the > >> moment > >> > trying to get back to normal after my europ trip. > >> > > >> > in any case did you look here?: > >> > > >> > https://rt.wiki.kernel.org/articles/b/u/i/HOWTO~_Build_an_RT-application_6066.html > >> > specifically the > >> > Latencies caused by Page-faultssection. > >> > > >> > j. > >> > > >> > > >> > > >> > On Wed, Apr 25, 2012 at 12:28 PM, Lars Segerlund > >> > <[email protected]>wrote: > >> > > >> >> I am getting a set of pagefaults in rt context when running linuxcnc > >> >> 2.4.4 with rt-preemmpt patches, which is not the question. > >> >> > >> >> However, is it normal to hit pagefaults in RT ? > >> >> > >> >> ( usually you lock the pages and preallocate the stack and some > other > >> >> init ... then you have no pagefaults ... there are some stuff doing > >> >> that in the rt patches, but I haven't pinpointed the source of the > >> >> pagefaults yet, I suspect some other part. I am not veryknowlegeable > >> >> about emc's code .... only the parts I have needed to look at. ) > >> >> > >> >> I haven't had a look at the specific situation, but will give the > >> >> system a thorough look asap. since I hit most of them during startup > I > >> >> figured that I should check on the list first. > >> >> > >> >> / regards, Lars Segerlund. > >> >> > >> >> > >> >> > >> > ------------------------------------------------------------------------------ > >> >> Live Security Virtual Conference > >> >> Exclusive live event will cover all the ways today's security and > >> >> threat landscape has changed and how IT managers can respond. > >> Discussions > >> >> will include endpoint security, mobile security and the latest in > >> malware > >> >> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > >> >> _______________________________________________ > >> >> Emc-developers mailing list > >> >> [email protected] > >> >> https://lists.sourceforge.net/lists/listinfo/emc-developers > >> >> > >> > > >> > ------------------------------------------------------------------------------ > >> > Live Security Virtual Conference > >> > Exclusive live event will cover all the ways today's security and > >> > threat landscape has changed and how IT managers can respond. > Discussions > >> > will include endpoint security, mobile security and the latest in > malware > >> > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > >> > _______________________________________________ > >> > Emc-developers mailing list > >> > [email protected] > >> > https://lists.sourceforge.net/lists/listinfo/emc-developers > >> > >> > >> > ------------------------------------------------------------------------------ > >> Live Security Virtual Conference > >> Exclusive live event will cover all the ways today's security and > >> threat landscape has changed and how IT managers can respond. > Discussions > >> will include endpoint security, mobile security and the latest in > malware > >> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > >> _______________________________________________ > >> Emc-developers mailing list > >> [email protected] > >> https://lists.sourceforge.net/lists/listinfo/emc-developers > >> > > > ------------------------------------------------------------------------------ > > Live Security Virtual Conference > > Exclusive live event will cover all the ways today's security and > > threat landscape has changed and how IT managers can respond. Discussions > > will include endpoint security, mobile security and the latest in malware > > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > > _______________________________________________ > > Emc-developers mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Emc-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-developers > ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
