X-Recipient: archive-cygwin AT delorie DOT com X-Original-To: cygwin AT cygwin DOT com Delivered-To: cygwin AT cygwin DOT com DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 52E04385841E Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=theworld.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=theworld.com MIME-Version: 1.0 Message-ID: <24956.15977.882463.257590@gargle.gargle.HOWL> Date: Fri, 29 Oct 2021 14:33:13 -0400 From: bzs AT theworld DOT com To: moss AT cs DOT umass DOT edu Subject: Re: Curiosity about file access performance In-Reply-To: <8e3852d7-d2d4-0af5-ec15-a7865cd7216d@cs.umass.edu> References: <00895c47-8df9-1f17-baac-0b3560de9d1c AT cs DOT umass DOT edu> <20211029191434 DOT 737060387e2007319bcf3894 AT nifty DOT ne DOT jp> <8e3852d7-d2d4-0af5-ec15-a7865cd7216d AT cs DOT umass DOT edu> X-Mailer: VM 8.2.0b under 27.2 (x86_64-pc-linux-gnu) X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS, NICE_REPLY_A, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, SPF_HELO_PASS, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: cygwin AT cygwin DOT com X-Mailman-Version: 2.1.29 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: cygwin AT cygwin DOT com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com Sender: "Cygwin" I/O to/from /dev/zero or /dev/null could be special-cased. Benchmarking file system performance can be fraught. -- -Barry Shein, co-author of nfsstones benchmark Software Tool & Die | bzs AT TheWorld DOT com | http://www.TheWorld.com Purveyors to the Trade | Voice: +1 617-STD-WRLD | 800-THE-WRLD The World: Since 1989 | A Public Information Utility | *oo* -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple