Date: Sat, 18 Apr 1998 16:53:36 -0500 (EST) From: "John S. Dyson" <dyson@FreeBSD.ORG> To: abial@nask.pl (Andrzej Bialecki) Cc: luigi@labinfo.iet.unipi.it, freebsd-current@FreeBSD.ORG Subject: Re: There was PicoBSD - let there be a Mini... Message-ID: <199804182153.QAA25065@dyson.iquest.net> In-Reply-To: <Pine.NEB.3.95.980418232450.24028A-100000@korin.warman.org.pl> from Andrzej Bialecki at "Apr 18, 98 11:27:54 pm"
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Andrzej Bialecki said: > On Sat, 18 Apr 1998, Luigi Rizzo wrote: > > > > * the whole installation (available in sysinstall :-) would place FreeBSD > > > on an existing DOS partition. Installation program would create the file > > > with filesystem on it (which will then be mounted on a vn(4) device). This > > > will require (well, it depends) ca. 16-24MB of free space on a DOS > > > partition. > > > > you'd need this much space just for the swapfile. > > As I said: it depends. E.g. PicoBSD doesn't use swap at all... So perhaps, > in case of X's, 8MB would be for swap and 16MB for the binaries. > As you probably know, FreeBSD-current has two interesting sysctl variables for swap control, for exactly the case of embedded applications: sysctl vm.defer_swapspace_pageouts Makes it improbable to use swap space, unless the system really needs it. sysctl vm.disable_swapspace_pageouts Makes the system avoid using swap totally. In the above cases, the paging algorithms are changed to be friendly for the application. -- John | Never try to teach a pig to sing, dyson@freebsd.org | it just makes you look stupid, jdyson@nc.com | and it irritates the pig. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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