Hello All, Sorry to interrupt you.
I have been investigating a problem in which there has been a dramatic core size (complete program size) of a program running on a IA-64 machine running kernel version 2.4.21-4.0.1 (A redhat advanced server distribution) compared to other 64-bit architectures like amd64 and EM64T. There has been an increase of around 20% of the size. I verified the virtual address mappings in /proc/<>/maps file and found that several .so files (other segments of same size) are getting mapped multiple times as follows. <------------------------------------------------------------------------------------------------> 200000000005c000-200000000007c000 r-xp 0000000000000000 08:07 6521003 /usr/X11R6/lib/libXext.so.6.4 200000000007c000-2000000000090000 rw-p 0000000000010000 08:07 6521003 /usr/X11R6/lib/libXext.so.6.4 2000000000090000-2000000000268000 r-xp 0000000000000000 08:07 6520995 /usr/X11R6/lib/libX11.so.6.2 2000000000268000-2000000000270000 ---p 00000000001d8000 08:07 6520995 /usr/X11R6/lib/libX11.so.6.2 2000000000270000-2000000000284000 rw-p 00000000001d0000 08:07 6520995 /usr/X11R6/lib/libX11.so.6.2 2000000000284000-200000000028c000 r-xp 0000000000000000 08:07 6094863 /lib/libdl-2.2.4.so 200000000028c000-2000000000294000 ---p 0000000000008000 08:07 6094863 /lib/libdl-2.2.4.so 2000000000294000-200000000029c000 rw-p 0000000000000000 08:07 6094863 /lib/libdl-2.2.4.so 200000000029c000-20000000002b8000 r-xp 0000000000000000 08:07 6094883 /lib/libpthread-0.9.so 20000000002b8000-20000000002bc000 ---p 000000000001c000 08:07 6094883 /lib/libpthread-0.9.so 20000000002bc000-20000000002d4000 rw-p 0000000000010000 08:07 6094883 /lib/libpthread-0.9.so 20000000002d4000-2000000000358000 r-xp 0000000000000000 08:07 376886 /usr/lib/libncurses.so.5.2 2000000000358000-2000000000364000 ---p 0000000000084000 08:07 376886 /usr/lib/libncurses.so.5.2 2000000000364000-2000000000374000 rw-p 0000000000080000 08:07 376886 /usr/lib/libncurses.so.5.2 2000000000374000-2000000000378000 rw-p 0000000000000000 00:00 0 2000000000378000-2000000000400000 r-xp 0000000000000000 08:07 6094865 /lib/libm-2.2.4.so 2000000000400000-2000000000408000 ---p 0000000000088000 08:07 6094865 /lib/libm-2.2.4.so 2000000000408000-2000000000414000 rw-p 0000000000080000 08:07 6094865 /lib/libm-2.2.4.so 2000000000414000-200000000065c000 r-xp 0000000000000000 08:07 6094859 /lib/libc-2.2.4.so 200000000065c000-2000000000664000 ---p 0000000000248000 08:07 6094859 /lib/libc-2.2.4.so 2000000000664000-2000000000678000 rw-p 0000000000240000 08:07 6094859 /lib/libc-2.2.4.so <-------------------------------------------------------------------------------------------> example /lib/libc-2.2.4.so size 6094859 got mapped 3 times with permissions 'r-xp' , '---p' and 'rw-p' from the bottom. I found the similar mappings for all the programs running on a IA-64 machine. Is this some special kernel kind of feature on IA-64 ?? Your kind inputs on this problem are greatly appreciated. Looking forward to hear from you. Thanks in advance, Vamsi kundeti - 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/
