From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-0.9 required=5.0 tests=BAYES_00,FORGED_GMAIL_RCVD, FREEMAIL_FROM autolearn=no autolearn_force=no version=3.4.4 X-Google-Thread: 103376,68494635acddb77e X-Google-Attributes: gid103376,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!postnews.google.com!t54g2000hsg.googlegroups.com!not-for-mail From: Maciej Sobczak Newsgroups: comp.lang.ada Subject: Re: File output and buffering Date: Wed, 20 Aug 2008 07:44:48 -0700 (PDT) Organization: http://groups.google.com Message-ID: References: <60a35fd4-e5a6-4aa0-a73f-6815ce7e92fc@f36g2000hsa.googlegroups.com> <4af2f934-7458-4370-b325-c38e3a4068b8@s50g2000hsb.googlegroups.com> NNTP-Posting-Host: 128.141.45.203 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Trace: posting.google.com 1219243489 3559 127.0.0.1 (20 Aug 2008 14:44:49 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Wed, 20 Aug 2008 14:44:49 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: t54g2000hsg.googlegroups.com; posting-host=128.141.45.203; posting-account=bMuEOQoAAACUUr_ghL3RBIi5neBZ5w_S User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.0.1) Gecko/2008070206 Firefox/3.0.1,gzip(gfe),gzip(gfe) Xref: g2news1.google.com comp.lang.ada:1679 Date: 2008-08-20T07:44:48-07:00 List-Id: On 20 Sie, 11:21, "Dmitry A. Kazakov" wrote: > BTW, buffering does not make I/O faster. It obviously does the opposite. You must be using some strange timer or a specially distorted definition of I/O. Buffering allows to minimize the overhead that is there per each physical output operation. If you can produce the same amount of data but with less operations, then the total overhead is smaller. -- Maciej Sobczak * www.msobczak.com * www.inspirel.com Database Access Library for Ada: www.inspirel.com/soci-ada