Date: Thu, 5 Dec 1996 08:54:28 +0900 (JST) From: Michael Hancock <michaelh@cet.co.jp> To: Jake Hamby <jehamby@lightside.com> Cc: hackers@FreeBSD.org Subject: Re: Speaking of performance... Message-ID: <Pine.SV4.3.95.961204162142.17926C-100000@parkplace.cet.co.jp> In-Reply-To: <Pine.BSF.3.95.961130032519.229B-100000@hamby1>
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Are you confusing streams with the STREAM benchmark? Mike Hancock On Sat, 30 Nov 1996, Jake Hamby wrote: > That TCP bandwidth thread was obnoxious, but I was interested in one > comment from Mr. Miller (and Terry Lambert's response) on STREAM > performance, and Solaris performance tuning. Sun has a new IPC mechanism > called "doors" which came from their Spring OS project that they claimed > in a recent developer newsletter is faster than any other form of IPC in > Solaris. Right now the door system call is officially UNdocumented (an > excerpt from "man door" is included below for your amusement), and the > only thing that uses it is nscd (name service cache daemon, which caches > passwd, group, and host data), but I'd expect it to take a bigger role in > Solaris 2.6. Terry, or anyone, is this a technology worth investigating, > or just some tidbit that Sun threw in because STREAMs were so slow? > > -- Jake > > door(2) System Calls door(2) > > WARNING > Please do not attempt to reverse-engineer the interface and > program to it. If you do, your program will almost certainly > fail to run on future versions of Solaris, and may even be > broken by a patch. This document does not constitute an > API. Doors may not exist or may have a completely different > set of semantics in a future release. > > NOTES > This manual page is here solely for the benefit of anyone > who noticed door_call() in truss(1) output and thought, > "Gee, I wonder what that does..." > > SunOS 5.5.1 Last change: 29 Aug 1995 1
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