Method and apparatus for analyzing communication quality, and non-transitory computer-readable storage medium

An apparatus for analyzing communication qualities between virtual machines serving as transmission sources and virtual machines serving as transmission destinations on a virtual network, the apparatus comprising:

• a memory configured to store, in a temporal sequence, input queue information and output queue information, wherein the input queue information indicates, for each of the transmission sources, a first queue length indicating a number of pieces of data addressed from one of the transmission sources to one of the transmission destinations, the pieces of data being included in an input queue of the one of the transmission source, and the output queue information indicates, for each of the transmission destinations, a second queue length indicating a number of pieces of data included in an output queue of the one of the transmission destinations;
• a processor coupled to the memory and configured to
• execute a first process that includes reading a temporal sequence of input queue information and a temporal sequence of output queue information from the memory;
• and
• execute a second process that includes identifying, based on the temporal sequence of the input queue information and the temporal sequence of the output queue information, a first pair and a second pair as mirroring targets,
• wherein the first pair is a pair of a first source among the transmission sources and a first destination among the transmission destinations, in which the first queue length of data addressed to the first destination, indicated by the input queue information of the first source, is greater than or equal to a first threshold value, a value of a correlation between a temporal transition of the first queue length of data addressed to the first destination, the first queue length being indicated by the input queue information, and a temporal transition of the second queue length indicated by the output queue information of the first destination is greater than a second threshold value, and an increase rate of the first queue length of data addressed to the first destination, the first queue length being indicated by the input queue information, is less than or equal to a third threshold value, and
• wherein the second pair is a pair of a second source among the transmission sources and a second destination among the transmission destinations, in which the first queue length of data addressed to the second destination, indicated by the input queue information of the second source, is greater than or equal to the first threshold value, and a value of a correlation between a temporal transition of the first queue length of data addressed to the second destination, the first queue length being indicated by the input queue information, and a temporal transition of the second queue length of the output queue information of the second destination is less than or equal to the second threshold value.

A non-transitory computer-readable medium for storing computer-executable program that causes a processor to execute a process for analyzing communication qualities between virtual machines serving as transmission sources and virtual machines serving as transmission destinations on a virtual network, the process comprising:

• executing a first process that includes reading a temporal sequence of input queue information and a temporal sequence of output queue information from a memory configured to store, in a temporal sequence, input queue information and output queue information, wherein the input queue information indicates, for each of the transmission sources, first queue length indicating a number of pieces of data addressed from one of the transmission sources to one of the transmission destinations, the pieces of data being included in an input queue of the one of the transmission source, and the output queue information indicates, for each of the transmission destinations, a second queue length indicating a number of pieces of data included in an output queue of the one of the transmission destinations;
• and
• executing a second process that includes identifying, based on the temporal sequence of the input queue information and the temporal sequence of the output queue information, a first pair and a second pair as mirroring targets,
• wherein the first pair is a pair of a first source among the transmission sources and a first destination among the transmission destinations, in which the first queue length of data addressed to the first destination, indicated by the input queue information of the first source, is greater than or equal to a first threshold value, a value of a correlation between a temporal transition of the first queue length of data addressed to the first destination, the first queue length being indicated by the input queue information, and a temporal transition of the second queue length indicated by the output queue information of the first destination is greater than a second threshold value, and an increase rate of the first queue length of data addressed to the first destination, the first queue length being indicated by the input queue information, is less than or equal to a third threshold value, and
• wherein the second pair is a pair of a second source among the transmission sources and a second destination among the transmission destinations, in which the first queue length of data addressed to the second destination, indicated by the input queue information of the second source, is greater than or equal to the first threshold value, and a value of a correlation between a temporal transition of the first queue length of data addressed to the second destination, the first queue length being indicated by the input queue information, and a temporal transition of the second queue length of the output queue information of the second destination is less than or equal to the second threshold value.