Date: Mon, 30 Nov 1998 12:51:49 +1030 From: Greg Lehey <grog@lemis.com> To: Jonathan Chen <jonc@pinnacle.co.nz> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Curious about what happens during boot. Message-ID: <19981130125149.A431@freebie.lemis.com> In-Reply-To: <Pine.SCO.3.96.981130150859.9948A-100000@kiwi.pinnacle.co.nz>; from Jonathan Chen on Mon, Nov 30, 1998 at 03:10:06PM %2B1300 References: <19981130113148.H831@freebie.lemis.com> <Pine.SCO.3.96.981130150859.9948A-100000@kiwi.pinnacle.co.nz>
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On Monday, 30 November 1998 at 15:10:06 +1300, Jonathan Chen wrote: > On Mon, 30 Nov 1998, Greg Lehey wrote: > > [...] >> The first process that UNIX starts is process 0 (strangely enough). >> Nowadays it doesn't do much more than spawn process 1, which is called >> init. > > Hmm. If the process 1 is called `init'; was there ever a name for > process 0? Oh yes, there still is. But it differs from one system to another. On FreeBSD, it's called `swapper' and is responsible for wholesale removal of a process image to backing store. This goes back to the pre-virtual memory versions of UNIX, when swapping was the only way to get a process out of memory. Other versions of UNIX use it for other purposes and give it other names. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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