Hello All, Really thankful for your inputs!
> Itanium instruction set is not as compact as some other architectures, > so the same program will typically require more bytes of code. I stopped the program on both amd64 machine and ia64 machine and grepped the values from /proc/<>/status and found the following. <----Linux IPF-----------> VmSize: 126304 kB VmLck: 0 kB VmRSS: 6352 kB VmData: 19696 kB VmStk: 16 kB VmExe: 97760 kB VmLib: 3152 kB <------------------------> <------AMD64-------------> VmSize: 100432 kB VmLck: 0 kB VmRSS: 2828 kB VmData: 24428 kB VmStk: 264 kB VmExe: 62848 kB VmLib: 3048 kB <-----------------------> Seems like most of core size(VmSize) on ipf (126MB) is coming from the code size(VmExe) i.e 97MB. While the code size is just 62MB on amd64. Looks like IA-64 wastes a lot of VM due to big instruction sizes, so big instruction sizes will improve performance ? compared small instruction sizes? , but fetching big instructions surely takes time compared to small, this may be the reason why amd64 is the fasttest 64-bit process ? Thanks a lot! Vamsi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
