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2010 Oct 20
0
Increased memory usage between 4.8 and 5.5
...0000002aa4b61000 4 - - - r---- libnss_dns-2.3.4.so
0000002aa4b62000 4 - - - rw--- libnss_dns-2.3.4.so
This seems to be explained by an increase in ELF_MAXPAGESIZE between the
two releases according to this page:
http://www.greenend.org.uk/rjk/2009/dataseg.html
Another oddity I found that was only in centos 5.5 was a lot of heap
memory being marked as Private_Dirty according to /proc/<pid>/smaps:
2b37c9826000-2b37cc4ca000 rw-p 2b37c9826000 00:00 0 [heap]
Size: 45712 kB
Rss: 45424 kB
Shared_Clean: 0 kB
Shared_...