On Sat, 22 Apr 2006, Lubos Lunak wrote: > > libpng version 1.2.8rel-5 from dapper > > > > before: > > > > $ objdump -x /usr/lib/libpng.so | grep data > > 11 .rodata 00002a00 00021a30 00021a30 00021a30 2**3 > > 18 .data 00000348 00034cd0 00034cd0 00024cd0 2**2 > > 20 .sdata 000000b0 0003502c 0003502c 0002502c 2**2 > > > > 0x348+0xb0=0x3F8=1016 bytes > > > > $ python memstats.py | grep libpng > > private: /usr/lib/libpng12.so.0.1.2.8: 168 KB (spread among 84 mappings) > > This in other words means that every process has two dirty pages because of > libpng.
How did you get two pages? Each process has two mappings for libpng12. So with 84 mappings, there are 42 processes, and 168 KB / 42 = 4k = 1 page. Note that even moving from .data to .rodata is desirable anyway, even if it doesn't result in reduced memory consumption, it does result in reduced relocations which is good. --behdad http://behdad.org/ "Commandment Three says Do Not Kill, Amendment Two says Blood Will Spill" -- Dan Bern, "New American Language" _______________________________________________ Performance-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/performance-list
