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=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: 103376,38d01316d66d8f95 X-Google-NewGroupId: yes X-Google-Attributes: gida07f3367d7,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Received: by 10.68.135.231 with SMTP id pv7mr3865733pbb.8.1331174334010; Wed, 07 Mar 2012 18:38:54 -0800 (PST) Path: h9ni354pbe.0!nntp.google.com!news1.google.com!goblin2!goblin.stu.neva.ru!newsfeed1.swip.net!85.214.198.2.MISMATCH!eternal-september.org!feeder.eternal-september.org!mx04.eternal-september.org!.POSTED!not-for-mail From: Eilie Newsgroups: comp.lang.ada Subject: Re: Ada and linux real time Date: Thu, 8 Mar 2012 02:38:53 +0000 (UTC) Organization: A noiseless patient Spider Message-ID: References: <8kb66jddm0qb.1piup0wfaho1$.dlg@40tude.net> <3a01f684-b544-4051-985d-58aab98e832c@v2g2000vbx.googlegroups.com> <13z45jd9irz9x.1j2hj7ayxwkyj.dlg@40tude.net> Mime-Version: 1.0 Injection-Date: Thu, 8 Mar 2012 02:38:53 +0000 (UTC) Injection-Info: mx04.eternal-september.org; posting-host="Djv7k0en5Qxna71K2VR8XQ"; logging-data="26474"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX199nwoLEoF4oD/Vf61nqWlD" User-Agent: slrn/0.9.9p1 (Linux) Cancel-Lock: sha1:kokuZlcluN67WyPZFJ+EK1WF8gw= Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Date: 2012-03-08T02:38:53+00:00 List-Id: On 2012-03-07, Dmitry A. Kazakov wrote: > On Wed, 7 Mar 2012 04:10:14 -0800 (PST), slos wrote: > > I cannot tell for Linux, because I didn't use it for real-time purposes > yet. Ideally it should derive the system time from the TSC. However > scheduling would likely limited when controlled by timer interrupts. The > minimal waiting time is then determined by the timer's period. You should > look for this kernel setting if you want go below 10ms, or what the actual > limit is. > And what OS do you use for real-time purposes?