CloudSim 里Cloudlet类

Cloudlet 类

是用来说明在VM中运行的任务的类

Cloudlet 的属性

用来说明任务的状态(如就绪,成功,失败,暂停等)

 public enum CloudletStatus {
   
   
        /** The Cloudlet has been created and added to the CloudletList object. */
        CREATED,

        /** The Cloudlet has been assigned to a CloudResource object to be executed as planned. */
        READY,

        /** The Cloudlet has moved to a Cloud node. */
        QUEUED,

        /** The Cloudlet is in execution in a Cloud node. */
        INEXEC,

        /** The Cloudlet has been executed successfully. */
        SUCCESS,

        /** The Cloudlet has failed. */
        FAILED,

        /** The Cloudlet has been canceled. */
        CANCELED,

        /** The Cloudlet has been paused. It can be resumed by changing the status into RESUMED. */
        PAUSED,

        /** The Cloudlet has been resumed from PAUSED state. */
        RESUMED,

        /** The cloudlet has failed due to a resource failure.*/
        FAILED_RESOURCE_UNAVAILABLE;
        public static final CloudletStatus[] values = values();
        // @NOTE: Convert an int to enum with CloudletStatus.values[i] (mind the array bounds)
    }

任务的ID

    /**
     * The cloudlet ID.
     */
    private final int cloudletId;

broker(管理器)的ID

    /**
     * The User or Broker ID. It is advisable that broker set this ID with its
     * own ID, so that CloudResource returns to it after the execution.
     */
    private int userId;

任务的ID(字符串)

    /** The Cloudlet UID */
    private String uid;

执行长度(任务的计算量)-对应的是设备CPU计算频率

   /**
     * The execution length of this Cloudlet (Unit: in Million Instructions
     * (MI)). According to this length and the power of the processor (in
     * Million Instruction Per Second - MIPS) where the cloudlet will be run,
     * the cloudlet will take a given time to finish processing. For instance,
     * for a cloudlet of 10000 MI running on a processor of 2000 MIPS, the
     * cloudlet will spend 5 seconds using the processor in order to be
     * completed (that may be uninterrupted or not, depending on the scheduling
     * policy).
     *
     * @see #setNumberOfPes(int)
     */
    private long cloudletLength;

输入的文件大小-对应的是设备存储空间

    /**
     * The input file size of this Cloudlet before execution (unit: in byte).
     * This size has to be considered the program + input data sizes.
     */
    private final long cloudletFileSize;

输出的文件大小

    /**
     * The output file size of this Cloudlet after execution (unit: in byte).
     * <p>
     * //TODO See
     * <a href="https://groups.google.com/forum/#!topic/cloudsim/MyZ7OnrXuuI">this
     * discussion</a>
     */
    private final long cloudletOutputSize;

执行任务需要的核心数

    /**
     * The number of Processing Elements (Pe) required to execute this cloudlet
     * (job).
     *
     * @see #setNumberOfPes(int)
     */
    private int numberOfPes;

任务的执行状态

    /**
     * The execution status of this Cloudlet.
     */
    private CloudletStatus status;

任务开始执行的时间

    /**
     * The execution start time of this Cloudlet. With new functionalities, such
     * as CANCEL, PAUSED and RESUMED, this attribute only stores the latest
     * execution time. Previous execution time are ignored.
     */
    private double execStartTime;

任务完成的时间

    /**
     * The time where this Cloudlet completes.
     */
    private double execFinishTime;

运行任务消耗的时间

    /** The total time to complete this Cloudlet. */
    private double totalCompletionTime;

是否要输出运行记录

    /**
     * Indicates if transaction history records for this Cloudlet is to be
     * outputted.
     */
    private final boolean record;

是否输出运行记录

    /**
     * Indicates if transaction history records for this Cloudlet is to be
     * outputted.
     */
    private final boolean record;

存储操作系统的分界

/**
     * Stores the operating system line separator.
     */
    private String newline;

任务的执行历史记录

    /**
     * The cloudlet transaction history.
     */
    private StringBuffer history;

云任务在每个VM上执行的列表(如果它在一个单一的云资源上开始并完成执行，而没有被迁移，这个列表将只有一个)

    /**
     * The list of every resource where the cloudlet has been executed. In case
     * it starts and finishes executing in a single cloud resource, without
     * being migrated, this list will have only one item.
     */
    private final List<Resource> resList;

任务最后执行位置的VM的ID

    /**
     * The index of the last resource where the cloudlet was executed. If the
     * cloudlet is migrated during its execution, this index is updated. The
     * value -1 indicates the cloudlet has not been executed
     * yet.
     */
    private int index;

任务种类和执行的优先级

    /**
     * The classType or priority of this Cloudlet for scheduling on a resource.
     */
    private int classType;

网络种类

    /**
     * The Type of Service (ToS) of IPv4 for sending Cloudlet over the network.
     */
    private int netToS;

数据格式

    /**
     * The format of decimal numbers.
     */
    private DecimalFormat num;

执行任务的用户ID

    /**
     * The id of the guest entity that is planned to execute the cloudlet.
     */
    protected int guestId;

计划执行任务的VM容器

    /**
     * The id of the container is planned to execute the cloudlet.
     * It may be -1, if containers are not in use
     */
    // TODO: Remo Andreoli: to be deprecated in favor of guestId
    protected int containerId = -1;

传输能耗/比特

    /**
     * The cost of each byte of bandwidth (bw) consumed.
     */
    protected double costPerBw;

传输任务总能量消耗

    /**
     * The total bandwidth (bw) cost for transferring the cloudlet by the
     * network, according to the {@link #cloudletFileSize}.
     */
    protected double accumulatedBwCost;

任务的CPU的使用量

    /**
     * The utilization model that defines ho