JPS63292248A - Data processing system - Google Patents

Abstract

PURPOSE:To accurately analyze the spreading status of a fault, etc., by writing time information managed by a clocking mechanism on a common memory by one of processors, generating log information for each processor by adding the time information written on the common memory, and writing it on respective local memories. CONSTITUTION:The clocking mechanism 7 performs clocking based on a system clock, and applies interruption on the processor 1 with a prescribed cycle. The processor 1 interruption on the processor 1 with a prescribed cycle. The processor 1 receiving the interruption receives the time information under managing from the clocking mechanism 7, and writes it in a time information storing area 4a in a main memory 4. The processors 1-3 generate the log information at every execution of various kinds of operations such as communication with another processor or the input/output of data by adding the time information read out from the main memory 4 on the record of the operation, and write it in the log information storing area of corresponding logical memories 1b-3b. And when the fault is generated, the contents of the local memories 1b-3b in the processors 1-3 and that of the main memory 4 are dumped on an external memory device 5, and they are re-arranged in sequence of the time information, then, they are analyzed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a data processing system used for digital information processing, control, and the like.

Conventional technology Some data processing systems used for digital and information processing are equipped with a logging function that sequentially saves records of the operations of each of the processors that make up the system for use in failure analysis, etc. .

Conventionally, logging as described above has been performed by arranging the operation records in the order of the operations without adding time information, or by adding time information managed by each processor.

Problems to be Solved by the Invention In the above-mentioned conventional logging, time information is not attached to the operation record, or even if time information is attached, it varies from processor to processor.

This makes it difficult to accurately grasp the context of each processor's operations when analyzing records of communications between processors, which poses a problem when analyzing the spread of failures. There is.

Means for Solving the Problems The data processing system of the present invention each has a local
It includes a plurality of processors each having a memory and a shared memory that can be accessed by each of these processors, one of these processors is equipped with means for writing time information managed by a clock mechanism into the shared memory, and each processor By providing a means for creating log information and writing it to each local memory while adding time information written to the shared memory, it is possible to attach unique time information to the log information of each processor within the system. It is structured so that it can be collected simultaneously.

Hereinafter, the operation of the present invention will be explained in detail together with examples.

FIG. 1 is a block diagram showing the configuration of a data processing system according to an embodiment of the present invention, in which 1 to 3 are processors, 4 is a main memory, 5 is an external storage device, 6 is a system bus, and 7 is a block diagram showing the configuration of a data processing system according to an embodiment of the present invention.
is a clock mechanism.

The processor 1 is composed of an ALUla and a local memory 1b, and communicates with other processors and accesses the main memory 4 according to a microprogram built into the local memory.

Processor 2 also has ALU 2 a and local memory 2 b.
It communicates with other processors and accesses the main memory 4 according to the microprogram built in this local memory. This also applies to the processor 3.

The clock mechanism 7 performs clocking based on the system clock and interrupts the processor 1 at a predetermined period.The processor 1 that receives this interrupt receives the time information being managed from the clock mechanism 7, This is written into the time information storage area 4a of the main memory 4.

Each time the processors 1 to 3 perform various operations such as communication with other processors and input/output of data, they create log information by adding time information read from the main memory 4 to the record of this operation. This is written into the log information storage area in the corresponding local memory 2a to 2C.

In the event of a failure within this data processing system,
Local memories 1a to 1c within processors 1 to 3;
The contents of main memory 4 are dumped to external storage device 5. Local memories 1a to 1 dumped to external storage device 5
The log information in c is rearranged in the order of the time information attached to each log information and analyzed.

Although the configuration in which the clock mechanism 7 is installed outside the processor 1 has been exemplified above, it may be built into the processor 1.

Further, although the case where there are three processors is illustrated, an appropriate number of processors such as two or more may be used.

Effects of the Invention As explained in detail above, in the data processing system of the present invention, one of the processors writes time information managed by a clock mechanism into the shared memory, and each processor writes the time information managed by the clock mechanism into the shared memory. Since the configuration is such that log information is created while adding information and written to each local memory, log information of each processor can be collected while adding time information that is unique within the system.

As a result, the context of communication between processors becomes clear, and the spread of a failure can be accurately analyzed.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a data processing system according to an embodiment of the present invention. 1 to 3...Processor, 1a to 3b...Local
Memory, 4... Main memory, 7... Clock mechanism.

Claims (1)

[Scope of Claim] A data processing system comprising a plurality of processors each having a local memory and a shared memory accessible by each of the processors, wherein one of the plurality of processors has a clock mechanism. means for writing time information managed in the shared memory into the shared memory, each of the plurality of processors creates log information while adding the time information written in the shared memory, and writes the log information into the respective local memory. A data processing system characterized by comprising means for writing to.