JP2792399B2 - Multiprocessor system diagnostic device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multiprocessor system diagnostic apparatus, and more particularly to a method for diagnosing the processing capability of a multiprocessor system.

[0002]

2. Description of the Related Art Conventionally, in this type of diagnostic method, a load is applied to a CPU constituting a multi-CPU system, and a processable amount is verified according to a load time or an input / output amount due to an overload. We are verifying the processing capacity of the system.

In this case, in the system configuration as shown in FIG. 2, a large number of messages are transmitted one by one from the overload tester 11 to the CPUs 13 to 15 via the communication board 12 and the data bus 16 in order. The CPUs 13 to 15 that have received the message from the overload tester 11 send the received message back to the overload tester 11 via the data bus 16 and the communication board 12.

This process is continued, and when the CPUs 13 to 15 go down, the number of input and output of telegrams as viewed from the overload tester 11 is compared with each other.
When the number of CPUs is two, the processing capacity of a system with a multi-CPU configuration is verified by comparing the number of CPUs with three.

[0005]

In the conventional diagnostic method described above, the amount of electronic messages that can be processed by the CPU is known, but it is not known how much processing can be performed. In addition, although the maximum message volume that can be processed by the overload test is known, CP
There is a problem that the performance of the communication board and the overload tester must be always higher than the performance of U (all the number).

Therefore, an object of the present invention is to solve the above-mentioned problems and to know how much processing can be performed by each CPU without being affected by the performance of devices other than the CPU required for verifying the processing capacity. It is another object of the present invention to provide a multiprocessor system diagnostic apparatus capable of verifying the validity of the number of CPUs.

[0007]

Multiprocessor system diagnostic apparatus according to the present invention, in order to solve the above-mentioned object, in Rukoto over <br/> load by sending one by 1 message to a plurality of processors each connected to each other via a bus a multi-processor system diagnostic apparatus for diagnosing the capacity of a multiprocessor system comprising a plurality of processors, the following message from the transmission of the message at the time of diagnosis of the provided plurality of processors each and said multiprocessor system A plurality of measuring means for measuring a no-load time until receiving; a collecting means for collecting the contents of each of the plurality of measuring means; and a collecting means for collecting the contents of each of the plurality of measuring means. The professional
Means for diagnosing the processing capacity of the multiprocessor system by comparing the no-load time for each number of processors.

[0008]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention. In the figure, workstation 1 is C
This is a diagnostic device for verifying the processing capability of a multi-CPU system including PUs 3 to 5, and is connected to each of the CPUs 3 to 5 via the communication board 2 and the data bus 6.

When verifying the processing capability of the multi-CPU system, the same program is loaded on each of the CPUs 3 to 5 and operated, and the no-load time of each of the CPUs 3 to 5 when a certain load is applied is counted.

That is, the workstation 1 sends the messages to the CPUs 3 through the communication board 2 and the data bus 6 one message at a time.
5 in order. In the CPUs 3 to 5, the telegrams from the workstation 1 are successively received by the telegram input units 3a, 4a and 5a.

Thereafter, the CPUs 3 to 5, which have received the message from the workstation 1, send the message processing response output unit 3b,
A message is transmitted from 4b, 5b to the workstation 1 via the data bus 6 and the communication board 2.

The above is the flow of the operation time of the CPUs 3 to 5. The CPUs 3 to 5 do not operate (no load time) from the transmission of a message to the workstation 1 to the reception of the next message. Becomes

When verifying the processing capacity of the system, the CPUs 3 to 5 measure the above-mentioned no-load time by using the idle measuring units 3 c and 4.
Measurement is performed using c and 5c. Since the no-load time increases as the number of CPUs increases, the no-load time is measured when there is one CPU, when there are two CPUs, when there are three CPUs, and the like.

The workstation 1 calculates the no-load time for each CPU by the idle measuring units 3c of the CPUs 3 to 5,
4c and 5c, and the validity of the number of CPUs is verified by comparing these no-load times. here,
The validity of the number of CPUs indicates whether the number of CPUs (processing capacity) is sufficient for a certain load.

Further, the workstation 1 can know how much load can be applied by comparing the above-mentioned no-load time. In this case, by comparing the no-load time, the larger the no-load time, the more the CPU
It is determined that there is room in the processing of (1), that is, that the load can be applied.

As described above, the same program is loaded on all the CPUs 3 to 5 of the system having a multi-CPU configuration, and the idle measuring units 3c, 4c, 5c determine the no-load time during which the CPUs 3 to 5 are not operating. The idle measuring units 3 counted by the workstation 1 and collected by the workstation 1, respectively.
By diagnosing the processing capacity of the system based on the contents of c, 4c, and 5c, it is possible to know the remaining amount that each of the CPUs 3 to 5 can process.

Also, the validity of the number of CPUs can be verified by comparing the no-load time according to the number of CPUs, so that the CPU is not affected by the performance of devices other than the CPU required for this verification. Can be verified.

[0019]

As described above, according to the present invention, the no-load time of each processor is measured at the time of diagnosis of the multiprocessor system, and the capability of the multiprocessor system is diagnosed based on the measurement result. It is possible to know how much processing can be performed by each CPU without being affected by the performance of devices other than the CPU required for the performance verification, and to verify the validity of the number of CPUs. effective.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Workstation 2 Communication board 3-5 CPU 3a, 4a, 5a Message input part 3b, 4b, 5b Message processing response output part 3c, 4c, 5c Idle measurement part 6 Data bus

Claims (2)

(57) [Claims] That under load by sending one by 1 message to a plurality of processors each connected to each other via a 1. A bus
A multiprocessor system diagnostic apparatus for diagnosing the capability of a multiprocessor system including the plurality of processors, provided in each of the plurality of processors.
And the telegram at the time of diagnosis of the multiprocessor system
A plurality of measuring means for measuring a no-load time from transmission until it receives the next message and a collecting means for collecting the contents of the plurality of measuring means each, the plurality of measuring means for the collection means collects The number of processors based on each content
Multiprocessor system diagnostic apparatus characterized by comprising a means of diagnosing by comparing the no-load time for each processing capability of the multi-processor system. Means for supplying the same program to each of said plurality of processors when diagnosing said multiprocessor system, wherein said plurality of measuring means measures a no-load time when each of said plurality of processors is operated by said same program. 2. The multiprocessor system diagnostic apparatus according to claim 1, wherein the measurement is performed by: