Date: Thu, 08 Jan 2004 08:45:13 +0100 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: David Schultz <das@FreeBSD.ORG> Cc: Peter Jeremy <peterjeremy@optushome.com.au> Subject: Re: perl malloc slow? Message-ID: <622.1073547913@critter.freebsd.dk> In-Reply-To: Your message of "Wed, 07 Jan 2004 20:28:16 PST." <20040108042816.GA1813@VARK.homeunix.com>
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In message <20040108042816.GA1813@VARK.homeunix.com>, David Schultz writes: >FWIW, you can do the required gymnastics with mmap() as long as >the mapped region is backed by a file. There has been a lot of talk about using file backing instead of swap backing. The typically proposed scenario is for each process to open "$HOME/.backingstore/$$" or some such. There are a lot of interesting applications, good ideas and nifty tricks enabled by this, but there are also some nasty details, a few security concerns and probably a performance impact. All in all it has not happened yet, and given the size of fish we are currently catching in other areas, I don't see it happening anytime soon. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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