SuperPages utilization survey

[Wojciech Puchar]

>>
>> i asked the question wrong. the right should be "how does it do". Because i
>> am not aware about any user level interface in FreeBSD to explicitly request
>> superpage mapping.
>
> You are right, there isn't any.

true. anyway there should be such interface to freebsd kernel.


>
> The code in mysqld.cc only works if HAVE_SOLARIS_LARGE_PAGES is defined:
>
> 3229 #endif /* HAVE_LARGE_PAGES */
> 3230 #ifdef HAVE_SOLARIS_LARGE_PAGES
> 3231 #define LARGE_PAGESIZE (4*1024*1024)  /* 4MB */
> 3232 #define SUPER_LARGE_PAGESIZE (256*1024*1024)  /* 256MB */
> 3233   if (opt_large_pages)
> 3234   {
>
> ...
>
> 3278   }
> 3279 #endif /* HAVE_SOLARIS_LARGE_PAGES */
>
>