Some mmap observations compared to Linux 2.6/OpenBSD

[Mike Silbersack]

On Sat, 25 Oct 2003, David Schultz wrote:

> But regardless of the approach, someone has yet to demonstrate
> that this is actually a performance problem in the real world. ;-)

I could be way wrong, but I would think that a database might mmap
discontiguous segments of memory.  Perhaps someone familiar with
mysql/postgres/others might know if they would be a good benchmark.

Actually, relating to this, didn't phk request a VM function which would
remap a page (or contiguous segment of pages) to a new address which had
free space after it?  I believe that he needed such a feature to
turbocharge realloc().  It sounds like the freelist mode of operation
would make that more feasible.

Mike "Silby" Silbersack