Ulrich Dreeper, the glibc maintainer, details on his blog the main features of version 2.10 of the library: POSIX 2008, C++ compliance, C++ 201x support, DNS NSS improvement, use NSS in libcrypt, printf hooks and, perhaps more interesting, better malloc scalability.
New Features in Glibc 2.10
Submitted by diegocg 2009-04-18 General Development 7 Comments
What I found even more interesting is an automatic use of optimized function that the new glibc features.
I thought it was 200x.
It seems to still not implemented and we will see them speaking about 203x
the malloc_info function returns an xml string? mixing up xml with the libc library seems to me a bad idea.