Date: Tue, 28 Nov 2000 12:04:23 -0500 (EST) From: <joeo@cracktown.com> To: Andre Oppermann <oppermann@telehouse.ch> Cc: chat@freebsd.org Subject: Re: Netbsd advances... Message-ID: <Pine.LNX.4.04.10011281157370.7915-100000@ra.nks.net> In-Reply-To: <3A23D953.A4C4FFD9@telehouse.ch>
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Yes, I know FreeBSD had a merged buffer cache for the 1.1.5 release and I think everything after the 2.2 release. Just nice to see that the end user perceived performance of netbsd may finally get to the point where I could stand to use it (especially on older hardware). On Tue, 28 Nov 2000, Andre Oppermann wrote: > > AFAIK FreeBSD does this for five years now... nothing new in little > china. > > joeo@cracktown.com wrote: > > > > Just noticed this over on the netbsd home page... > > > > UBC code integrated into NetBSD-current (27 Nov) (top) > > > > Chuck Silvers has integrated the Unified Buffer Cache project code > > into NetBSD-current. To build a new -current kernel from an existing > > kernel configuration file, you'll want to remove any settings for > > "BUFCACHE", "NBUF", or "BUFPAGES", and let the size of the buffer cache go > > back to the default. After that, you'll need to rerun config, and then you > > can build away. > > > > Under UBC, the traditional buffer cache is no longer used for storing > > regular data, only metadata, so you'll want to allow the VM system to > > manage most of your physical memory. The default buffer cache size will be > > fine for most people, regardless of the amount of memory in the machine. > > > > What does this mean for you? For most people, more memory will be > > available for caching regular file data, so filesystem i/o will be faster > > since there will be more times when the data you're accessing is already > > in memory. How much faster depends on what you're doing, but you'll > > probably notice the difference. > > > > More information is available in Chuck's announcement in the > > current-users mail archive. > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-chat" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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