Date: Fri, 26 Jan 1996 22:37:04 +0100 (MET) From: J Wunsch <j@uriah.heep.sax.de> To: current@freefall.freebsd.org Subject: Re: Good news -- pipe stuff Message-ID: <199601262137.WAA20194@uriah.heep.sax.de> In-Reply-To: <199601261541.HAA09194@freefall.freebsd.org> from "John Dyson" at Jan 26, 96 07:41:52 am
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As John Dyson wrote: > Pipe latency is about 2x the speed, pipe bandwidth is about 50% faster, > and I am still evaluating the context switch -- but it is faster. Before > I include the changes, I plan to add more intelligent memory management > of pipes (including making them pageable -- instead of tieing up wired > memory), and page-flipping. Page-flipping should add about 50% more onto > the bandwidth. Well, is this still wish-time? Some other systems seem to allow the specification of the pipe buffer size as a resource limit. Would this fit into a re-implementation, too? -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)
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