On 06/29/2013 06:38 PM, Frank McCormick wrote: > On 06/29/2013 02:05 AM, Stan Hoeppner wrote: >> On 6/28/2013 2:49 PM, Frank McCormick wrote: >> >>> For now I will run regular 32-bit Sid..realizing I am wasting >>> the opportunity to utilize more memory and perhaps faster operations. >> >> Your 32 bit PAE Sid kernel can address 64GB. Since your new machine >> will have less than 64GB RAM you're wasting no opportunity. Your only >> limitation is 2GB per process. How many of your apps consume more than >> 2GB of RAM? > > None that I am aware of > > >> >> WRT speed, the vast majority of 32 bit integer programs will execute >> slightly faster than their 64 bit counterparts due to more efficient >> cache use--32 bit instructions consume less memory space than 64 bit >> instructions, thus more instructions fit in L1/2/3 caches. This, >> combined with plenty of rename registers, offsets the advantage of the >> extra 8 architectural registers available in long mode. > > More good news for me for now anyway. > >> >> And now the kicker. None of the above means squat if you bought a >> modern fast CPU with plenty of cache. There will be no perceptible >> difference between 32/64 bit OS platforms running the standard fare of >> desktop applications. > > Can't ask for more. But undoubtedly I will eventually go to a full > 64-bit installation. > > > Thanks Stan, a clear and easily understood explanation of the > differences. > Just about all the distros now have 64-bit versions. Is this all hype? I have installed 64-bit Linux on two machines, and have 32-bit on this one, and I confess that I don't see any performance difference. The only thing I see is that some standard programs are not available for 64-bit systems--I'm thinking Adobe Reader and Light-Scribe. So why have we been bamboozled into running 64 bits if there is no advantage?
--doug -- Blessed are the peacemakers..for they shall be shot at from both sides. --A.M.Greeley -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/51cf671e.9050...@optonline.net
