JPS63301334A - Measuring system for performance of virtual computer - Google Patents

Abstract

PURPOSE:To designate the measuring items of a virtual computer by using a designating means which designates an ID and an address to specify a virtual computer that should perform the counting actions to plural counters and actuating the designated counter. CONSTITUTION:A counter number part 7 of an instruction word register 1 holds the number of a counter to be actuated. A register 10 holds the contents of a virtual computer ID part 5 and a virtual computer address part 6 of the register 1. The ID and the address of a virtual computer which is presently executed by a computer are supplied to a comparator 12 and then compared with the contents of the register 10. When the coincidence is obtained from the comparator 12, a count enable signal is sent to the corresponding counter for actuation. Thus it is possible to automatically count and collect the measurement data on the performance of each virtual computer.

Description

[Detailed Description of the Invention] [Summary] Software monitors and hardware monitors have conventionally been used as means for measuring the performance of electronic computers or the performance of software running on the computers. The monitor is capable of making various measurements without imposing any load on or affecting the system under test, and can easily measure, for example, the number of instruction executions and address distribution when accessing main memory. . However, in the case of virtual computers, since a plurality of different computers use the same real computer, it is difficult to separately measure the performance of each virtual computer. Therefore, in the past, for this purpose, a control program (host program or O8) was used to control the counter, so it was possible to measure with high precision equivalent to the actual operating state. The problem was that it was not possible to do so.

In order to solve such conventional problems, the present invention stores in advance the ID or address of the virtual machine to be measured in a register, and operates the counter only when this matches the ID or address of the real computer. This paper discloses a measurement method that allows highly accurate measurement of a specified virtual machine.

[Industrial Application Field] The present invention relates to a configuration for measuring the performance of an electronic computer and its control, and in particular, to measuring the performance of each virtual computer with high accuracy in a system that uses a virtual computer method. This relates to a measurement method that allows for

[Prior Art] Software monitors and hardware monitors have conventionally been used as monitoring methods for quantitatively understanding the operating status of electronic computer systems. Among these, the former software monitor collects various data using a measurement program as part of O8, and has the advantage of being highly flexible in measurement and being able to obtain information related to the program. Although it has
Since a measurement program is involved, the measurement result may be affected by the program, and it may not be suitable for understanding the detailed operation of the hardware.

On the other hand, the latter hardware monitor extracts electrical signals directly from the circuit using a probe or the like and counts the number of signals generated using a counter.
It measures the operating status of a computer, and usually does not require software intervention, so it can purely measure hardware operations.

However, in recent years, as computer systems have become more complex and larger, more accurate measurements of system performance are required. With the monitor method, there are limits to the type and accuracy of data that can be collected due to speed, and it has been difficult to meet these requirements.

For this reason, some computers are equipped with a dedicated performance analyzer in the CPU to monitor the status of the CPU and channels.

Such a performance analyzer allows measurement to be started and stopped at any timing, and it is also possible to measure events including software behavior, which was difficult with conventional stand-alone hardware monitors. ing.

[Problems to be solved by the invention] As mentioned above, performance analyzers are useful tools that can measure the performance of extremely large, fast-processing computers with high accuracy. When used in this case, the following disadvantages occur.

In other words, since a virtual machine assigns a real machine to a different virtual machine each time it is needed for processing,
When measuring the performance of each virtual machine, each time the dispatched virtual machine changes, the operating system (O8) or an operator must read out the counter contents of the performance analyzer, initialize it, or start it. Therefore, there was a problem in that it was difficult to efficiently measure the performance of each virtual machine with high accuracy.

In view of these conventional problems, the present invention makes it possible to specify items to be measured on each virtual computer in advance in a system configured to run multiple virtual computers on one real computer. The purpose of this paper is to provide a performance measurement method that can efficiently measure the performance of each virtual machine.

[Means for Solving the Problems] According to the present invention, the above objects are achieved by the means described in the claims.

That is, the present invention provides at least one counter for counting electrical signals generated in response to events or changes in state occurring inside an electronic computer; means for specifying a virtual computer to be measured using the counter; A register that corresponds to the above counter and holds information for identifying the virtual computer to be measured is compared with the contents of the register and the ID or address of the virtual computer to which the real computer is assigned, and if they match. A comparator that identifies whether or not the results match, and outputs the result, and when the comparator outputs a signal indicating that the two items to be compared match, a specified counter is activated. This is a method for measuring the performance of a virtual machine that includes a means for measuring the performance of a virtual machine.

[Function] Normally, conventional performance analyzers are provided with a plurality of counters that simultaneously and independently count events to be measured.
A new means for specifying the ID and address of the virtual machine to be counted is provided, and a register that holds the specified virtual machine ID, address, and PA counter number in the above means, and a register that holds the virtual machine ID, address, and PA counter number that are currently dispatched. Computer ID, address is ID in the above register
, and a control circuit that sends a count enable signal to a designated counter only when the address matches the address, and is configured in hardware to realize an efficient performance measurement function on a virtual computer system.

According to the present invention, a counter number for counting can be specified for each virtual machine in advance, and after measurement starts, performance measurement for each virtual machine is automatically performed no matter how the virtual machine is dispatched. Data can be collected.

The means for specifying (assigning) to each counter the virtual machine that should be counted each time an event to be measured occurs is to provide a control command for that purpose and have the program execute it. Alternatively, a configuration may be adopted in which necessary information is held in a register by an operation on a panel.

[Embodiment] FIG. 1 is a block diagram of an embodiment of the present invention.
Specify the virtual machine and counter by the instruction,
This example shows a configuration that obtains the necessary data.

In the figure, 1 is a command word register, 2 is a command code field, 3 is an ID designation bit, 4 is an address designation bit, 5 is a virtual machine ID field, 6 is a virtual machine address field, and 7
is a part of the counter number, 8.9 is a decoder, 10 is a register that holds the ID and address of the virtual machine,
11 represents an AND circuit, and 12 represents a comparator.

Among the contents of the command word register 1, the command code section 2 holds command codes indicating start and stop of measurement, designation of measurement events, and the like.

Also, when the ID specification bit or address specification bit is "1", it is counted only when the virtual machine has the ID specified in the virtual machine ID field 5 or the address specified in the virtual machine address field 6. It represents.

The counter number part 7 holds the number of the counter to be operated.

The register 10 holds the contents of the virtual machine ID section 5 and the virtual machine address section 6 of the command word register 1.

The register 10 is provided corresponding to each counter, and this figure shows a case where there are four counters, numbered 0 to 3, and the register 10 corresponds to each of these counters.

The register 10 holds the ID and address value of the virtual machine. A signal is generated and, using this signal, the ID and address of the specified virtual machine are held at 1 in the register corresponding to the counter.

The comparator 12 receives the ID and address of the virtual machine currently running on the real computer, compares this with the contents of the register 10, and when they match, the comparator sends a message to the corresponding counter. Sends a count enable signal.

FIG. 2 is a time chart showing an example of the operation in the above embodiment.
, a case is shown in which a virtual machine with ID=0 is assigned to counter 0, a virtual machine with ID part 1 is assigned to counter 1, and a virtual machine with ID=2 is assigned to counter 2 by an addressing instruction, and each virtual machine It is dispatched as shown at 13.

[Effects of the Invention] As explained above, according to the present invention, it is possible to automatically count and collect measurement data related to the performance measurement of each of the virtual needles, without depending on the OS or operator operations. It has the advantage of being possible.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a time chart showing an example of the operation of the embodiment. 1...Command word register, 2...Command code section, 3...ID designation bit, 4...
・Address specification bit, 5...ID section, 6...
...Address part, 7...Counter number part, 8, 9...Decoder, 10...
・Register, 11...AND circuit, 12...
...Comparator, 13...Disbatch status of virtual machine

Claims (1)

[Scope of Claims] At least one counter that counts electrical signals generated in response to events or state changes occurring inside a computer; and means for identifying a virtual computer to be measured using the counter. , Compare the contents of the register that corresponds to the above counter and hold information for identifying the virtual computer to be measured with the ID or address of the virtual computer to which the real computer is assigned, and determine whether they are correct. A comparator that identifies whether or not they match and outputs the result; and when the comparator outputs a signal indicating that both the comparison targets match, a specified counter is activated. 1. A method for measuring the performance of a virtual computer, characterized in that a means for measuring the performance of a virtual machine is provided.