On Sunday, January 08, 2012 07:36:21 PM Kent A. Reed did opine: > On 1/7/2012 8:48 PM, gene heskett wrote: > > On Saturday, January 07, 2012 08:40:23 PM Kent A. Reed did opine: > >> On 1/5/2012 8:46 PM, gene heskett wrote: > >>> Where can I find some real docs on this isolcpu thingy? > >> > >> Gene: > >> > >> Quoting from kernel.org: > >> isolcpus= [KNL,SMP] Isolate CPUs from the general scheduler. > >> > >> Format: > >> <blah blah blah> > > > > I've read the first from kernel.org, and your wiki article (which I > > expect to do on the new box arriving late Monday, thanks), but both > > articles leave me scratching my head a wee bit. > > > > It seems to me that if one is going to take a cpu core out of the SMP > > scheduling effectively isolating it so its doing nothing, then one > > should have a matching command associated with the RTAI load that > > specifically puts the RTAI core to run on this 'saved' core, but I > > haven't found how this can be assured to happen. > > > > So that is my real& not very well asked question, Kent. > > > > Hows the missus doing? Better I hope. > > > > > > > > Cheers, Gene > > Okay, now I understand, Gene. > > Unfortunately, I'm going to have to plead the old-timer defense. I can't > remember where I read that RTAI (at least the way we configure it) > chooses the last core with the attendant desirability of isolating it > from the Linux scheduler. Maybe a core developer will straighten us out. I don't recall reading that, but I also can't claim I have read everything ever written about RTAI. Perhaps 10% of it maybe.
> I am mindful of one of my dad's favorite sayings "it's not what you > don't know that gets you in trouble, it's what you know that ain't so." That I think has been our life's quest. Being innately curious over a subject area that is best described as eclectic, the JOAT in me finds as the years go by, its increasingly easy to start mixing up what I do know. Sometimes I may tell a story just to refresh my own memory of it, so I hope I'm not too boring when I do. > And my wife is doing better than expected, thanks. Now if only we could > find a way to eradicate the cause rather than treat the symptoms. Great! Good to hear! And +100 to the cause discovery. > Regards, > Kent Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> Words can never express what words can never express. ------------------------------------------------------------------------------ Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
