On Fri, Apr 20, 2012 at 10:51 AM, Omer Zak <[email protected]> wrote: > > Currently I use 64-bit Debian Squeeze and Debian Wheezy (testing) on few > machines, and I am not aware of any problems. > > However, if you have less than 4GB memory and no plans to add more > memory, then you'll get no advantage from moving to 64-bit. Application > binaries will also be a bit bigger due to the 64-bit pointers, and since > virtual memory is being used, this means also a bit slower work. > > --- Omer
Actually, in my experience given sufficiently recent GCC version (== distribution) any machine with >= 2GB will see a 0-30% performance increase (depending on the software used) due to the added GP registers tends to negating the effect of the added memory usage due to 64bit pointers / etc. E.g. http://www.phoronix.com/scan.php?page=article&item=ubuntu_natty_pae64&num=1 Beyond that, some types of application (E.g. virtualization) work far better on x86_64, regardless of the amount of memory. - Gilboa _______________________________________________ Linux-il mailing list [email protected] http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
