From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI autolearn=ham autolearn_force=no version=3.4.4 Received: from minnie.tuhs.org (minnie.tuhs.org [IPv6:2600:3c01:e000:146::1]) by inbox.vuxu.org (Postfix) with ESMTP id 973E323A63 for ; Sun, 19 May 2024 03:21:26 +0200 (CEST) Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id 360394368A; Sun, 19 May 2024 11:21:22 +1000 (AEST) Received: from mcvoy.com (mcvoy.com [192.169.23.250]) by minnie.tuhs.org (Postfix) with ESMTPS id 1C96143677 for ; Sun, 19 May 2024 11:21:15 +1000 (AEST) Received: by mcvoy.com (Postfix, from userid 3546) id A83EE35E919; Sat, 18 May 2024 18:21:14 -0700 (PDT) Date: Sat, 18 May 2024 18:21:14 -0700 From: Larry McVoy To: Bakul Shah Message-ID: <20240519012114.GU9216@mcvoy.com> References: <20240514111032.2kotrrjjv772h5f4@illithid> <20240515164212.beswgy4h2nwvbdck@illithid> <8D556958-0C7F-43F3-8694-D7391E9D89DA@iitbombay.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8D556958-0C7F-43F3-8694-D7391E9D89DA@iitbombay.org> User-Agent: Mutt/1.5.24 (2015-08-30) Message-ID-Hash: ANU75QJR2V7COYDOSL4OMW7IKRUQJ3OE X-Message-ID-Hash: ANU75QJR2V7COYDOSL4OMW7IKRUQJ3OE X-MailFrom: lm@mcvoy.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: The Unix Heritage Society mailing list X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [TUHS] Re: If forking is bad, how about buffering? List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: On Sat, May 18, 2024 at 06:04:23PM -0700, Bakul Shah via TUHS wrote: > [1] This brings up a separate point: in a microkernel even a simple > thing like "foo | bar" would require a third process - a "pipe > service", to buffer up the output of foo! You may have reduced > the overhead of individual syscalls but you will have more of > cross-domain calls! Do any micro kernels do address space to address space bcopy()? -- --- Larry McVoy Retired to fishing http://www.mcvoy.com/lm/boat