Date: Tue, 25 Aug 1998 22:23:47 -0400 (EDT) From: Snob Art Genre <benedict@echonyc.com> To: Terry Lambert <tlambert@primenet.com> Cc: Mike Smith <mike@smith.net.au>, michaelh@cet.co.jp, gpalmer@FreeBSD.ORG, chuckr@glue.umd.edu, freebsd-current@FreeBSD.ORG Subject: Re: Threads across processors Message-ID: <Pine.GSO.4.02.9808252219230.16068-100000@echonyc.com> In-Reply-To: <199808260155.SAA00915@usr04.primenet.com>
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On Wed, 26 Aug 1998, Terry Lambert wrote:
> A dirty little secret is that SYSV SHM in FreeBSD is much faster
> than mmap, because pages backed by anonymous pages instead of a
> vnode pager object do not have to be written through...
What about this? From mmap(2):
MAP_ANON Map anonymous memory not associated with any specific file.
The file descriptor used for creating MAP_ANON must be -1.
The offset parameter is ignored.
Ben
"You have your mind on computers, it seems."
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