Hit ratio estimation device, hit ratio estimation method,...

Details Hit ratio estimation device, hit ratio estimation method,... Hit ratio estimation device, hit ratio estimation method,...

2007-10-23

2007-10-23

Shah, Sanjiv (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S158000, C711S133000, C711S160000, C711S170000, C711S171000, C718S102000, C718S103000, C718S104000, C709S238000, C709S239000, C709S240000, C709S241000

Reexamination Certificate

active

10970857

ABSTRACT:
Using a counter of the Web server10, a leave probability p1, average value m and variance s2of think time, and hit ratio r are calculated for a session data cache12involving 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 means21sets 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 means22searches an almost true value of a by the fix point computing method based on the computational expression f(a)=a. An estimation means23estimates ra based on a searched value of a.

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