Joerg Schilling wrote: > On amd64, all 64 bit binaries typically (with a few exceptions) run ~ 30% > faster than their 32 bit couterparts. > > Shouldn't we take take care of this difference? Is there no way to treat amd64 > different from sparcv9? >
Ah, the topic everyone seems to avoid talking about. There is a small set of "correction" issues on SPARC. There are *some* applications which are faster as 32-bit. There are *some* applications which are faster as 64-bits. All kind of worth a huge yawn. There is a significant performance issue on amd64 [1]. Its all about the registers. Unfortunately, since we still attempt to produce one "IA" distribution *and* support 32-bit IA processors, we are stuck at the lowest common denominator. Every Linix'ish distro I know of has both 64 and 32 bit variants. Sun has not shown a significant interest in producing a 64-bit, IA distribution. OpenSolaris certainly could. That said, its not this case, right? - jek3 [1] Replace "amd64" with your choice of: i386, i486, i586, i686, x86, ia86, ia64, x64, amd64, IA64,.... :-)
