Re: Understanding 'perf report' result lua 5.2.3: __memcpy_sse2_unaligned ?

[Roberto Ierusalimschy <roberto@...>]

> What is it happening that triggers that many '__memcpy_sse2_unaligned' ?
> Can anyone shed some light on this ?

If I understood the report correctly, there is no indication that there
are too many '__memcpy_sse2_unaligned'; it is big only in comparison
with the rest. If all your server does is to move data around (e.g.,
it reads it from somewhere, creates a Lua string with it, and then writes
it somewhere else), it seems reasonable that memcpy will have a big
share of the total time.

-- Roberto