Date: Sat, 04 Jan 1997 17:12:27 -0800 From: David Greenman <dg@root.com> To: Charles Henrich <henrich@crh.cl.msu.edu> Cc: msmith@atrad.adelaide.edu.au (Michael Smith), joerg_wunsch@uriah.heep.sax.de, freebsd-hackers@FreeBSD.ORG Subject: Re: MMAP Troubles (Joerg?) Message-ID: <199701050112.RAA26548@root.com> In-Reply-To: Your message of "Sat, 04 Jan 1997 14:54:17 EST." <199701041954.OAA05981@crh.cl.msu.edu>
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>> Slightly older news (but I suspect still current) was that INN is >> faster on FreeBSD _without_ mmap, due to caching etc. Remember that > >I dont see how that is, since the READ/WRITE's just turn into MMAP's inside the >kernel (from what I understand of it). Pages that are read in using read have lower priority than mmaped pages and can be more easily reclaimed. ...so it would probably be faster to do read/write for articles, but slower to do read/write for the active file (which you want to stay in memory if possible). -DG David Greenman Core-team/Principal Architect, The FreeBSD Project
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