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  • CPU Scheduling Simulator 1.0 released!

    I've said it all before in recent posts, but here it is again - CPUSS is a framework that allows you to design and analyse CPU scheduling algorithms. Download CPUSS 1.0 There is a tonne of stuff in CPUSS! Most of which is not exposed by the report generation tool (CPUSSRG). Using the CPUSS API ...
    Posted to Granville Barnett (Weblog) by gbarnett on 04-08-2008, 12:00 AM
    Filed under: .NET, Algorithms, C#, Software Development, Research, Open Source, CPU Scheduling, CPUSS, Operating Systems

  • CPU Scheduling Simulator 0.9 RC released!

    Download CPUSS 0.9! In this release I have fixed a few things, as well as added a few new minor features to make analysis of scheduling algorithms a lot quicker, some of which include: CPU Utilization % Turnaround times for each process Response times for each process Throughout time windows I have also...
    Posted to Granville Barnett (Weblog) by gbarnett on 04-03-2008, 12:00 AM
    Filed under: .NET, C#, Software Development, Open Source, CPU Scheduling, CPUSS

  • CPU Scheduling Simulator 0.8 Beta 2 Released!

    Download CPUSS 0.8 Beta 2 Beta 2 is not really very revolutionary, however it does add some tooling support to CPUSS: CPUSS Report Generator (cpussrg.exe) CPUSSRG This is a little tool that allows you to invoke a strategy against some specified processes, and then view a HTML report of the simulation...
    Posted to Granville Barnett (Weblog) by gbarnett on 03-29-2008, 12:00 AM
    Filed under: .NET, C#, Software Development, Open Source, CPU Scheduling, CPUSS, Operating Systems

  • CPUSS Beta 1 released!

    Download CPUSS A few new things in this release: Command line report generator Variance and standard deviation methods that take predicate functions as args Repeat runner Html report generator Graphing support Download CPUSS Note: since I added a reference to NPlot in SHFB the XMLDoc's are reported as...
    Posted to Granville Barnett (Weblog) by gbarnett on 03-28-2008, 12:00 AM
    Filed under: .NET, C#, Software Development, Open Source, CPU Scheduling, CPUSS

  • Variance and standard deviation of process wait times with CPUSS

    Getting the variance and standard deviation of process wait times over the course of the simulation is really simple, it's simply a call to a few methods. Note: in CPUSS 0.7 there will be overloads for GetVariance and GetStandardDeviation that accept a predicate function so you can get the stats on specific...
    Posted to Granville Barnett (Weblog) by gbarnett on 03-22-2008, 12:00 AM
    Filed under: .NET, C#, Open Source, CPU Scheduling, CPUSS

  • CPU Scheduling Simulator 0.6 released!

    Download CPUSS 0.6 Some cool new features added in this release, they include: Variance Standard Deviation CPU Busy Time CPU Idle Time Get average wait time for a category of process (this uses a predicate function) I am tempted to say that this build is pretty much feature complete, any further additions...
    Posted to Granville Barnett (Weblog) by gbarnett on 03-22-2008, 12:00 AM
    Filed under: .NET, Algorithms, C#, Software Development, Research, Open Source, CPU Scheduling, CPUSS, Operating Systems

  • Getting average wait times for processes with certain properties via predicate functions

    This is the first time really that passing in a predicate function has made sense. I use the Func<T0, ...> type that takes a Process parameter and returns a bool, below is an example of using the overridden version of GetAverageWaitTime with a predicate function – here only processes with a burst...
    Posted to Granville Barnett (Weblog) by gbarnett on 03-22-2008, 12:00 AM
    Filed under: C#, Open Source, CPU Scheduling, CPUSS

  • CPU Scheduling Simulator 0.5 released!

    Download CPUSS 0.5 I got bored today (I really should be preparing for stuff I have coming up in the next few days!!) looking at random stuff in preparation for the next few days, so I broke off for a while and decided to finish up CPUSS 0.5 release which contains: Process resumed event Min/Max wait...
    Posted to Granville Barnett (Weblog) by gbarnett on 03-16-2008, 12:00 AM
    Filed under: .NET, Algorithms, C#, Software Development, Open Source, CPU Scheduling, CPUSS, Operating Systems

  • CPU Scheduling Simulator 0.4 Released!

    Download CPUSS 0.4 A fairly minor release with a little work cleaning the API up a little by reducing ambiguity (definition of ProcessLoad, and Pairs collections). Also added an event that allows you to subscribe to process preemption, as well as scattered priorities for auto generated process loads...
    Posted to Granville Barnett (Weblog) by gbarnett on 03-14-2008, 12:00 AM
    Filed under: .NET, Algorithms, C#, Software Development, Open Source, CPU Scheduling, CPUSS

  • CPUSS: Using the SJF Expert Rule

    The SJF Expert Rule strategy is designed to elevate the priority of large processes based on a precondition defined by the user, that basically says if the current % of processes in the ready queue is greater than N then execute some of the large processes thus elevating their priorities. SJF is as you...
    Posted to Granville Barnett (Weblog) by gbarnett on 03-12-2008, 12:00 AM
    Filed under: .NET, Algorithms, C#, Software Development, Research, Open Source, CPU Scheduling, CPUSS, Operating Systems, Windows
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