Execution Time

The calculation method of job execution time of isomorphic Hadoop Environment Zhang Macro Hai Linpeng Jia Zongpu Shen Chao Wentao Execution Time is one of the important reference factors of job scheduling. By analyzing the execution characteristics of Hadoop MapReduce environment, this paper proposes a method to estimate the execution time of the work by using Map task and reduce task execution time as input. Under certain assumptions, this method obtains the execution time of map task and reduce task with the help of job pre execution. The experimental results show that the method is used to estimate the error rate of operation time.

Ksh_timer is designed to help Ksh or ksh93 script Administrators or http://www.aliyun.com/zixun/aggregation/7155.html "> developers to compute each function and its shell The time spent in the script user-defined section. The following points define the Ksh_timer function: If you run a script in Ksh_timer, the function called by the script is timed automatically. Users use ...

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The task execution code security mechanism in the open cloud computing environment Xu Xiaolong Yang Geng Wang Ru cloud Computing can fully aggregate the computing resources of Internet network server and edge terminal nodes for greater benefit. However, the deployment of the computing task to the user terminal implementation has brought security risks. The behavior of the massive terminal nodes belonging to different users is obviously unreliable and the computational security is difficult to guarantee. In particular, a user terminal node that acts as a task performer may tamper with program code or data in a task, returning false results,...

The PHP tutorial determines the page execution time code to determine the time required for the PHP script to execute correctly for a microsecond.         Inserts the code at the top of the page: <?php $mtime = Microtime (); &nbs ...

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