Turning off all SSEx routines for an issue with one routine (memcpy)
will hurt performance quite a bit. Why not just stay at glibc 2.12 (with
the memset changes we submitted to trunk) which will result in better
performance and also deal with the memcpy issue? Or is the window for
that closed?
--
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
Public bug reported:
Feature description:
Backport patch to pick SSE2 version of x86-64 memset on AMD Bulldozer to Ubuntu
11.04 glibc.
Partner benefit:
memset shows up significantly in the profile of major apps and benchmarks.
Since several Linux compilers like gcc, open64 etc rely on
