Date: Fri, 24 Jul 1998 18:39:13 -0400 (EDT) From: Snob Art Genre <benedict@echonyc.com> To: Stefan Eggers <seggers@semyam.dinoco.de> Cc: Edwin de Graaf <graaf@surf.IAE.nl>, freebsd-hackers@FreeBSD.ORG Subject: Re: How do I measure swap activity? Message-ID: <Pine.GSO.4.02.9807241834550.6980-100000@echonyc.com> In-Reply-To: <199807241741.TAA21786@semyam.dinoco.de>
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On Fri, 24 Jul 1998, Stefan Eggers wrote: > > there are two kinds of pagers, the VN pager and the SWAP pager. Do both of > > these cause a disk access? What is the difference between the two? > > As far as I understand the internals now the VN pager is the one used > for vnodes - used with mmap'ed files. The other is for swap space use > - the pages the system throws out of main memory. Do we use the VN pager for executing program files, like 4.4BSD? Also, the 4.4 book describes a device pager as well as swap and vnode, for paging memory-mapped hardware devices. Ben "You have your mind on computers, it seems." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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