Re: [PATCH v2 0/6] Miscellaneous speedup patches

[Paolo Bonzini]

On 11/08/2017 13:44, Paolo Bonzini wrote:
> Overall, they provide a 15% improvement for my favorite testcase (QEMU's
> "no-op" build).  These were first sent out last November, but there
> have been quite a few changes since then:
> 
> - I have dropped the SSE-optimized replacement for strpbrk, because
>   it does not provide any improvement when tested with a newer glibc.
> 
> - the improved hash function is now used for all case-insensitive
>   hash tables, including those with NUL-terminated keys.
> 
> - there are two new minor optimizations (patches 3 and 6)
> 
> The benchmarks were rerun with a newer version of QEMU that has an
> improved Makefile.  For this reason the times are lower and the speedup
> from patch 5 is smaller than I had reported for v1.

Any news?

Thanks,

Paolo

> Paolo
> 
> Paolo Bonzini (6):
>   use Jenkins hash
>   use strchr for simple case of find_char_unquote
>   use strchr/memmove in collapse_continuations
>   remove MAP_PERCENT
>   speedup parsing of functions
>   do not use STOP_SET for singleton sets
> 
>  configure.ac |   1 +
>  function.c   |   9 +++-
>  hash.c       | 148 
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  hash.h       |  40 ++++++++--------
>  main.c       |   5 +-
>  makeint.h    |   2 +-
>  misc.c       |  84 ++++++++++++++-------------------
>  read.c       |  79 +++++++++++++++++++++++--------
>  8 files changed, 275 insertions(+), 93 deletions(-)
>