* Poul-Henning Kamp <[EMAIL PROTECTED]> [020314 01:53] wrote: > In message <[EMAIL PROTECTED]>, Alfred Perlstein writes: > > > >Have you thought about issuing a madvise(MADV_WILLNEED) after the > >brk/mmap call in malloc, at least doing it when it's called via > >realloc, this might get rid of the superfolous (sp?) page faults > >that David Greenman reported. > > It would be much more valuable to add a > mremap(void *from, void *to, size_t length); > > since that can _solve_ the problem in _all_ cases, rather than > add more or less byzantine workarounds for silly benchmarks.
You're right that it would be a better optimization, however it's much more code to write than simply passing a flag down to the code responsible for the allocation especially when you _know_ you'll need it. I may be wrong about MADV_WILLNEED making any difference anyhow. :) -- -Alfred Perlstein [[EMAIL PROTECTED]] To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
