METHOD OF MONITORING DEAD-END SITUATIONS IN INFORMATION AND COMMUNICATION SYSTEM AND APPARATUS FOR REALISING SAID METHOD Russian patent published in 2014 - IPC G06F9/50 G06F11/07 

FIELD: information technology.

SUBSTANCE: method of monitoring dead-end situations in an information and communication system involves determining the values: $${\lambda }_{r_{it}}$$ - mathematical expectation of failure rate of the i-th critical technical resource r_it, where i=1, 2, 3, …, $$h_{r_{jp}}$$ - mathematical expectation of failure rate of the j-th critical software resource r_jp, where j=1, 2, 3,…, of the size q of the buffer memory zone of a unit of the information and communication system; setting t_tis - the time interval for scheduled execution of processes and calculating the value of the readiness factor K_rr using the formula: $$K_{rr}={\displaystyle \prod }_{i=1}^{rit}e{}^{-\lambda r_{it}{t}_{tis}}\times {\displaystyle \prod }_{j=1}^{rjp}{e}^{-h{r}_{jp}{t}_{tis}}\times {\displaystyle \prod }_{n=1}^N{e}^{-k{@}_e{q}_n}{\displaystyle \sum }_{i=1}^{k-1}\frac{{\left(k{@}_e{q}_n\right)}^i}{i!},$$ where: i=1, 2, 3, …, is the number of critical resources r_it; j=1, 2, 3,…, is the number of critical software resources i_jp; $${\lambda }_{r_{it}}$$ mathematical expectation of failure rate of the 1-th critical technical resource r_it; t_tis is the time interval for scheduled execution of processes; $$h_{r_{jp}}$$ is the mathematical expectation of failure rate of the j-th critical software resource r_jp; k is the order of the approximating Erlang distribution with parameter @_e - Poisson intensity in the unit for an integer value of the size q of the buffer memory zone of the unit of the information and communication system; N is the total number of buffer memory zones in the information and communication system; q is the size of the buffer memory zone of the unit of the information and communication system; comparing the determined readiness factor K_rr with a threshold level K_{rr (0)} and if the condition K_rr < K_{rr (0)} is satisfied, there are dead-end situations in the information and communication system.

EFFECT: high efficiency of determining dead-end situations, especially if there are multiple different-type resources, with incomplete a priori information on resources required by the processes, taking into account attributes of critical resources - reliability factors of technical and software resources and sizes of the buffer memory of units of the information and communication system.

2 cl, 2 dwg