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Hit ratio estimation device, hit ratio estimation method, hit ratio estimation program and recording medium
Hit ratio estimation device, hit ratio estimation method, hit ratio estimation program and recording medium
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机译:命中率估计装置,命中率估计方法,命中率估计程序和记录介质
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摘要
Using a counter of the Web server 10, a leave probability p1, average value m and variance s2 of think time, and hit ratio r are calculated for a session data cache 12 involving a predetermined Web application. For a first reading of a group of reading plural session data proximate temporally, p1a, ma and s2a, and average value a of the number of data reading sessions in each group are defined. A computational expression setting means 21 sets a computational expression f(a)=a including p1, m, s2, r, p1a, ma and s2a, the computational expression for a fix point computing method having a variable a. A true value searching means 22 searches an almost true value of a by the fix point computing method based on the computational expression f(a)=a. An estimation means 23 estimates ra based on a searched value of a.
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机译:使用Web服务器 10 B>的计数器,得出离开时间p 1 B>,思考时间的平均值m和方差s 2 B>和命中率为涉及预定Web应用程序的会话数据缓存 12 B>计算r。对于一组在时间上最接近读取多个会话数据的组的第一次读取,p 1 B> a I>,ma和s 2 B> a 定义各组中的数据读取会话数的平均值a。计算表达式设置装置 21 B>设置包括p 1 B>,m,s 2 B>,r,p < B> 1 B> a I>,ma和s 2 B> a I>,定点计算方法的计算表达式具有变量a。真值搜索装置 22 B>通过不动点计算方法基于计算表达式f(a)= a来搜索a的近似真值。估计装置 23 B>根据搜索到的a值估计ra。
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