Computer system, log collection method and computer program product
First Claim
1. A computer system in which a plurality of virtual machines operate on a host computer;
- the host computer comprising;
a time subtraction table for storing a time subtraction with the respective virtual machines; and
a log collection unit for collecting a log of the respective virtual machines;
wherein the log contains a time stamp which shows at least a log output time, and said log collection unit corrects the time stamp of the log collected from the respective virtual machines based on the time subtraction stored in the time subtraction table.
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Accused Products
Abstract
Provided is a computer system in which a plurality of virtual machines operate on a host computer. The host computer has a time subtraction table for storing the time subtraction with the respective virtual machines, and a log collection unit for collecting the logs of the respective virtual machines. The log contains a time stamp which shows at least the log output time. The log collection unit corrects the time stamp of the logs collected from the respective virtual machines based on the time subtraction stored in the time subtraction table. According to this computer system, the logs of the virtual machines operating in a time series that is different from the time series of the host computer can be collected upon integrating the time series of the virtual machines and the host computer.
63 Citations
17 Claims
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1. A computer system in which a plurality of virtual machines operate on a host computer;
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the host computer comprising;
a time subtraction table for storing a time subtraction with the respective virtual machines; and
a log collection unit for collecting a log of the respective virtual machines;
wherein the log contains a time stamp which shows at least a log output time, and said log collection unit corrects the time stamp of the log collected from the respective virtual machines based on the time subtraction stored in the time subtraction table. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of collecting a log of a computer system in which a plurality of virtual machines operate on a host computer, comprising the steps of:
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acquiring a time subtraction of the respective virtual machines and the host computer;
collecting a log of the virtual machines; and
correcting a time stamp of the log collected from the virtual machines based n the time subtraction. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification