Comment 2 for bug 735020

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harsha jagasia (harsha-jagasia) wrote :

We looked at machine with Ubuntu 11.04 on it. And it looks like __memset_sse2 is not really avalaible in a dump of the glibc at /lib/x86_64-linux-gnu/libc.so.6. Nor is __memcpy_ssse3 avalaible. In fact, none of the symbols with _sse* suffix are avalaible. Does Ubuntu use glibc or eglibc? If glibc is used, is it built with --enable-multiarch. Without the *_sse* routines, we expect glibc performance to be quite hindered on both AMD Barcelona (Greyhound core) and AMD Orochi (Bulldozer core) machines.