Re: revised two-level bitmap fdalloc diff

enami tsugutomo <[email protected]> 30 Oct 2003 10:52:26 +0900

Newsgroups	gmane.os.netbsd.devel.performance
Organization	Sony Corp.
Message-ID	<[email protected]>

YAMAMOTO Takashi <[email protected]> writes:

> i meant, "NDLOSLOTS(i) <= NDLOSLOTS(1024)"
> (lomap is more sensitive.  no actual difference anyway, though)

Really no actual difference?  Anyway, I guess ...

	- leave the test to use NDHISLOTS().
	- use NDHISLOTS() << NDENTRYSHIFT to calculate the allocation
          size of lomap.  use NDLOSLOTS() only to bound the search.

... is better.  As the malloc() will return space of power of 2 length
until 262144 file descriptors are requested (on 4k pages machine).

enami.