From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 11 Oct 2018 23:04:30 -0700 From: Ori Bernstein To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net> Message-Id: <20181011230430.8ec148a3cb2a4d95180a4ad2@eigenstate.org> In-Reply-To: <7aa20c07322147e6@orthanc.ca> References: <7aa20c07322147e6@orthanc.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: Lyndon Nerenberg Subject: Re: [9fans] zero copy & 9p (was Re: PDP11 (Was: Re: what heavy negativity!) Topicbox-Message-UUID: ed2d1d72-ead9-11e9-9d60-3106f5b1d025 On Thu, 11 Oct 2018 13:43:00 -0700, Lyndon Nerenberg wrote: > Another case to ponder ... We're handling the incoming I/Q data > stream, but need to fan that out to many downstream consumers. If > we already read the data into a page, then flip it to the first > consumer, is there a benefit to adding a reference counter to that > read-only page and leaving the page live until the counter expires? > > Hiro clamours for benchmarks. I agree. Some basic searches I've > done don't show anyone trying this out with P9 (and publishing > their results). Anybody have hints/references to prior work? > > --lyndon > I don't believe anyone has done the work yet. I'd be interested to see what you come up with. -- Ori Bernstein