Date: Sun, 21 Dec 2003 20:15:00 +1100 (EST) From: Andrew MacIntyre <andymac@bullseye.apana.org.au> To: Paul Mather <paul@gromit.dlib.vt.edu> Cc: freebsd-stable@freebsd.org Subject: Re: Problems reclaiming VM cache = XFree86 startup annoyance Message-ID: <20031221201039.R71992@bullseye.apana.org.au> In-Reply-To: <20031221033222.GA67365@gromit.dlib.vt.edu> References: <20031218203355.GC45155@gromit.dlib.vt.edu> <200312210205.hBL25K5D005777@apollo.backplane.com> <20031221033222.GA67365@gromit.dlib.vt.edu>
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On Sat, 20 Dec 2003, Paul Mather wrote:
> Not being a Python programmer, I don't know exactly how BitTorrent is
> accessing the files (e.g., using mmap), though I do know some kind of
> random access is involved as the filesets are chunked and different
> chunks are served to different peers. I suspect random access to such
> large files is not kind to the cache, though. :-)
BT doesn't use mmap(), just seek()/read()/write().
--
Andrew I MacIntyre "These thoughts are mine alone..."
E-mail: andymac@bullseye.apana.org.au (pref) | Snail: PO Box 370
andymac@pcug.org.au (alt) | Belconnen ACT 2616
Web: http://www.andymac.org/ | Australia
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