Date: Sat, 14 Apr 2001 09:34:26 -0500 From: "Matthew D. Fuller" <fullermd@futuresouth.com> To: Matt Dillon <dillon@earth.backplane.com> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: vm balance Message-ID: <20010414093426.B4438@futuresouth.com> In-Reply-To: <200104122124.f3CLOaq25845@earth.backplane.com>; from dillon@earth.backplane.com on Thu, Apr 12, 2001 at 02:24:36PM -0700 References: <59487.987108936@critter> <200104122124.f3CLOaq25845@earth.backplane.com>
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On Thu, Apr 12, 2001 at 02:24:36PM -0700, a little birdie told me that Matt Dillon remarked > > Without vmiodirenable turned on, any directory exceeding > vfs.maxmallocbufspace becomes extremely expensive to work with > O(N * diskIO). With vmiodirenable turned on huge directories > are O(N), but have a better chance of being in the VM page cache > so cost proportionally less even though they don't do any > better on a relative scale. Speaking of vmiodirenable, what are the issues with it that it's not enabled by default? ISTR that it's been in a while, and most people pointed at it have reported success with it, and it seems to have solved problems here and there for a number of people. What's keeping it from the general case? -- Matthew Fuller (MF4839) | fullermd@over-yonder.net Unix Systems Administrator | fullermd@futuresouth.com Specializing in FreeBSD | http://www.over-yonder.net/ "The only reason I'm burning my candle at both ends, is because I haven't figured out how to light the middle yet" To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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