Doug Rabson <[EMAIL PROTECTED]> writes: > Overcommit can be used for many reasons. I use it to reserve a large > linear address space to mmap alpha i/o spaces [...] Overcommit can be used for many reasons, but unless you've misdescribed what you're doing, _that's not one of them_. The mapped I/O pages need no backing store to be allocated for them by the VM system. They're backed by hardware. And if you have 'placeholder' pages (I note that you didn't say you mmap all of alpha i/o space, just reserve a large linear address space in which to mmap it), then it should be possible to map them in such a way (e.g. read-only ZFOD) in which they wouldn't count against backing store requirements, either. cgd -- Chris Demetriou - [EMAIL PROTECTED] - http://www.netbsd.org/People/Pages/cgd.html Disclaimer: Not speaking for NetBSD, just expressing my own opinion. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
- Re: Replacement for grep(1) (part 2) Sheldon Hearn
- Re: Replacement for grep(1) (part 2) Jon Ribbens
- Re: Replacement for grep(1) (part 2) Sheldon Hearn
- Re: Replacement for grep(1) (part 2) Daniel C. Sobral
- Re: Replacement for grep(1) (part 2) Jon Ribbens
- Re: Replacement for grep(1) (part 2) Daniel C. Sobral
- Re: Replacement for grep(1) (part 2) Alfred Perlstein
- Re: Replacement for grep(1) (part 2) Jon Ribbens
- Re: Replacement for grep(1) (part 2) Doug Rabson
- Re: Replacement for grep(1) (part 2) Jon Ribbens
- Re: Replacement for grep(1) (part 2) Chris G. Demetriou
- Re: Replacement for grep(1) (part 2) Doug Rabson
- Re: Replacement for grep(1) (part 2) Jordan K. Hubbard
- Re: Replacement for grep(1) (part 2) Warner Losh
- Re: Replacement for grep(1) (part 2) Ollivier Robert
- Re: Replacement for grep(1) (part 2) Daniel C. Sobral
- Re: Replacement for grep(1) (part 2) Todd Whitesel
- Re: Replacement for grep(1) (part 2) Archie Cobbs
- Re: Replacement for grep(1) (part 2) Warner Losh
- Re: Replacement for grep(1) (part 2) Dag-Erling Smorgrav
- Re: Replacement for grep(1) (part 2) Wes Peters