Drobe :: The archives
About Drobe | Contact | RSS | Twitter | Tech docs | Downloads | BBC Micro

Confirm comment report request

> Errr, I'm quite sure you're mad. Real Time operating systems are *all* > about being predictable. If you think they're not predictable, that QNX > installation at your local nuclear power plant, or WindRiver VxWorks > in that cruise missile are in deep s***.

Not in the way you think... Soft RT will try to execute the task in the given time "else" it will finish the execution later. Hard RT will try to execute the task in the given time "else" it will simply refuse to make it run.

Of course if you have a small (10 ms average execution time) task to execute in a quite long time (1 s), you don't need such predicatable features : with a simple PMT system (and only a few tasks running), your small task will ever be able to run in the given time.

But I really dont call this a fully predicatable system :) So perhaps I'm not mad... after all...

 is a RISC OS Userdfeugey on 02/08/03 10:04AM
[ Reply | Permalink | Report ]

Click on the button below to confirm you wish to flag up this comment to the website's administrators. Abuse of this service will be frowned upon and it should only be used to notify us of comments that are extremely distasteful, indecent or otherwise unlawful. If you disagree with an opinion expressed or fact stated in a comment, please take part in the debate rather than expect it to be removed.

Return to the drobe.co.uk front page

Details

Reporting user / IP: / 3.218.67.1
Comment GID: 28916
Timestamp: Fri, 28 Feb 2020 11:33:05 +0000

Search the archives

Today's featured article

  • Paperless life and RISC OS
    Wouldn't it be nice if everything was digital?
     14 comments, latest by mrtd on 10/12/04 9:12AM. Published: 6 Dec 2004

  • Random article

  • Further details of RiscCAD on CD

     Discuss this. Published: 28 Feb 2001

  • Useful links

    News and media:
    IconbarMyRISCOSArcSiteRISCOScodeANSC.S.A.AnnounceArchiveQercusRiscWorldDrag'n'DropGAG-News

    Top developers:
    RISCOS LtdRISC OS OpenMW SoftwareR-CompAdvantage SixVirtualAcorn

    Dealers:
    CJE MicrosAPDLCastlea4X-AmpleLiquid SiliconWebmonster

    Usergroups:
    WROCCRONENKACCIRUGSASAUGROUGOLRONWUGMUGWAUGGAGRISCOS.be

    Useful:
    RISCOS.org.ukRISCOS.orgRISCOS.infoFilebaseChris Why's Acorn/RISC OS collectionNetSurf

    Non-RISC OS:
    The RegisterThe InquirerApple InsiderBBC NewsSky NewsGoogle Newsxkcddiodesign


    © 1999-2009 The Drobe Team. Some rights reserved, click here for more information
    Powered by MiniDrobeCMS, based on J4U | Statistics
    "Leave young upstarts with a monopoly and you can easily end up with a badly focussed view of the world"
    Page generated in 0.0379 seconds.