On Saturday, November 19, 2011 12:32:48 PM Dave did opine: > On 11/18/2011 11:46 AM, andy pugh wrote: > > On 18 November 2011 16:31, gene heskett<[email protected]> wrote: > >> An interesting question, and not that I know of. The problem is > >> likely one of overflow in the emc internal counter, > > > > The accumulator is 64 bits. At 3000rpm and 16x microstepping I make > > that 3 million years before counter roll-over. > > > > I am unconcerned, that's not my bug to fix :-) > > It is interesting how things like this, when translated into minutes, > hours and then years oftentimes quickly exceeds our lifespan. > > I ran into the same thing last year on a one way - indexed chain drive > on a machine. You might remember that. I first thought I had to deal > with a 32 bit counter that would roll over every hour or so.. then I > was told it is a 64 bit counter and the time required to roll over > immediately exceeded the 1 year warranty period on the machine, buy a > few hundred years! :-) > > The machine has been running 16 hours per day since June of 2010, and so > far no rollover issues. :-) They have had to change the index drive > gearboxes on the machine twice since then....
Would that not be prima faci evidence that a redesign is in order, or do they just consider it a CODB? How about chain life? At a reposition every 3 seconds, there has to be accumulative shock affecting it. > but that cost is > incidental as they push the heck out of the machine to increase > throughput and make more $. They are doing 24-26 indexes per minute.. > which is about twice the original machine design rate. They love that > machine. > > Dave > > > ------------------------------------------------------------------------ > ------ All the data continuously generated in your IT infrastructure > contains a definitive record of customers, application performance, > security threats, fraudulent activity, and more. Splunk takes this > data and makes sense of it. IT sense. And common sense. > http://p.sf.net/sfu/splunk-novd2d > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users 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> Linux! Guerrilla UNIX Development Venimus, Vidimus, Dolavimus. (By [email protected], Mark A. Horton KA4YBR) ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-novd2d _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
