Date: Mon, 19 Apr 1999 15:42:21 -0500 (EST) From: "John S. Dyson" <dyson@dyson.iquest.net> To: dmlb@ragnet.demon.co.uk (Duncan Barclay) Cc: hackers@freebsd.org, dillon@apollo.backplane.com Subject: Re: Directories not VMIO cached at all! Message-ID: <199904192042.PAA20471@dyson.iquest.net> In-Reply-To: <XFMail.990418191810.dmlb@computer.my.domain> from Duncan Barclay at "Apr 18, 99 07:18:10 pm"
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> > On 18-Apr-99 John S. Dyson wrote: > > Perhaps before getting rid of B_MALLOC, take a look at the standard > > mix of directory sizes (don't just look at news servers.) If there is an > > extreme bias towards 512 or 2048, then you might consider keeping B_MALLOC. > > > > John > > >From my home machine which I'd classify as a workstation: > > Directory Size Count > 512 34354 > 1024 963 > 1536 358 > 2048 245 > 2560 74 > 3072 50 > 3584 37 > 4096 39 .... > Your results show the wastefulness of using a page for everything. There is NO gain from wasting the memory by rounding everything up to a page. If buffers are not used for sub-page entities, another scheme should be used. I fear expediency or sloppiness will prevail. John To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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