Date: Tue, 07 Oct 1997 07:56:00 -0700 From: David Greenman <dg@root.com> To: "Evan Champion" <evanc@synapse.net> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Version with good mmap()? Message-ID: <199710071456.HAA10619@implode.root.com> In-Reply-To: Your message of "Tue, 07 Oct 1997 08:45:09 EDT." <01bcd31e$d89a4600$513654c7@cello.synapse.net>
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>Does 2.2.1 or 2.2.5-BETA have a good mmap() (ie: fully functional, good >performance) or if not does 3.0-current? The version in 2.2.x and 3.x should be fully functional - I don't know of any problems with it. >I seem to recall reading at some point that the mmap() in earlier releases >wasn't quite up to scratch, but I can't remember which version was >recommended. I'm moving a server to FreeBSD which has a very heavy >dependence on very large size/quantity mmap()'s. The only problem had to do with syncing modified information back to the file, but I haven't heard of any problems with this in a long time. >Also, does FreeBSD's mmap() require swap to back up the maps? For mapped files, no. The data is backed by the file. -DG David Greenman Core-team/Principal Architect, The FreeBSD Project
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