JPS61296892A - Multi processor system - Google Patents

Abstract

PURPOSE:To flexibly respond the increase of the quantity of a traffic in a digital exchange by providing one or plural second processors assisting the processing performed by respective processors belonging to the first processor groups processing load in a dispersion in accordance with the increase of the quantity of the processing. CONSTITUTION:When the quantity of the traffic of respective networks N1-N4 can be processed only by all function processors P1-P4, assisting processors P5 and P6 stand by in preparation of the generation of a high traffic and engage in the processing except for the traffic processing in accordance with the necessity. When the traffic is increased and the quantity required for the processing exceeds a processing capacity, the quantity of the processing of a local processor LP part is increased and the quantity of the processing of a main processor MP part is decreased. The processor P5 assists the processing in the main processor MP part of the all function processor in which the above mentioned processing rate is changed. When the quantity of the traffic is further increased and only the processor P5 cannot assist the all function processors P1-P4, the processor P6 starts to assist the processor P5.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a multiprocessor system for controlling a network within a digital exchange.

BACKGROUND OF THE INVENTION In general, control of networks within digital exchanges, which can be expanded to large systems, is performed by multiprocessor systems.

Conventionally, as one of the above-mentioned multiprocessor systems, there has been a functionally distributed system (as shown in FIG.
For example, ATT Technology No.

IESS) is known.

In addition, as shown in FIG. 3, a load distribution type system (for example, a load distribution type system (for example, ■77 M6taconta10C) is also known.

Furthermore, as shown in FIG. 4, by arranging multiple networks and arranging local processors LPI to LP4 corresponding to each network N1 to N4, load distribution is achieved, and at the same time, each local processor LPI to Lp4 has a different function. A combined load distribution and function distribution system (for example, N
TT 070) is also known.

Problems to be Solved by the Invention The conventional multiprocessor systems shown in Figures 2 to 4 lack flexibility in dealing with unexpected temporary increases in traffic and subsequent expansion of processing capacity. is low;
Another problem is that there is a lack of flexibility in the case where some processors, such as the main processor, are assigned to purposes other than traffic processing during a period when traffic is small.

Means for Solving the Constituent Problems of the Invention A multiprocessor system of the present invention that solves the problems of the prior art described above includes a first processor group that distributes the load, and each processor belonging to the first processor group. The device is configured to include one or more second processors that support the processing performed by the processor as the amount of processing increases.

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

Embodiment FIG. 1 is a block diagram showing the configuration of a multiprocessor system according to an embodiment of the present invention.

A plurality of networks Nl, N2 . N3 and N4 are arranged, and processors P1 to P correspond to each network N1 to N4.
Install 4. Each of the processors P1 to P4 functions as a full-function processor including the local processor LP section and the main processor MP section in the conventional example, and performs distributed processing of traffic in each network.

On the other hand, the remaining processors P5 and P6 are processor P1
- It has a function to support P4. However, the processors P5 and P6 mainly share the functions of the conventional main processor MP.

If the amount of traffic in each network N1-N4 is not so large that it can be processed by only the full-function processors P1-P4, the configuration will be similar to the conventional load-balanced system shown in FIG. In this state, the utilization rate of full-function processors P1 to P4 is high, and support processors P5 and P6 are on standby in preparation for the occurrence of high traffic.
You can concentrate on processing other than traffic processing as needed.

Assume that the traffic on each network N1-N4 increases and the amount of processing required for some of the full-function processors P1-P4 exceeds its processing capacity.

In this case, the processing amount of the local processor LP section in the full-function processor that exceeds its processing capacity is increased, and the processing amount of the main processor MP section is reduced by this increase.

Then, the processing in the main processor MP section of the full-function processor in which the processing ratio has been changed is supported by the processor P5. Even in this state, the processor P6 can concentrate on processing other than traffic processing.

Alternatively, reliability can be improved by having the support processor P6 perform the same traffic processing as the support processor P5 to function as a standby backup.

When the amount of traffic increases further and processor P5 alone cannot support all the functional processors P1 to P4,
Processor P6 begins assisting processor P5.

The processing of the main processor MP section of the full-function processors P1 to P4 supported by the processors P5 and P6 may be a specific function or may be part of the load for all functions.

The above is the processor P1 installed for network support.
Although the case in which P4 is a full-function processor has been exemplified, a configuration may be adopted in which one of processors P5 and P6 supports part of the functions and loads of the main processor MP section regardless of the amount of traffic.

In addition, the processors P5 and P6 are connected to the main processor MP of the processors P1 to P4 installed for network support.
Although a configuration has been exemplified in which only the processing by the local processor LP unit is supported, a configuration may also be adopted in which a part of the processing by the local processor LP unit is supported.

Further, although a configuration in which four networks are arranged is illustrated, the multiprocessor system of the present invention can be applied to any other suitable number.

Furthermore, although the case of traffic processing in a digital exchange is illustrated, the present invention can be applied to various multiprocessor systems that handle different processing targets.

As described in detail, the multiprocessor system of the present invention includes a first processor group that distributes the load, and a process that is performed by each processor belonging to the first processor group in accordance with an increase in the amount of processing. Since the configuration includes one or a plurality of second processors that provide support, it is possible to flexibly respond to an increase in the amount of traffic within the digital exchange.

In other words, in the conventional multiprocessor system shown in FIGS. 2 to 4, if the amount of traffic processed by each network exceeds the processing capacity of the local processor LP or LP unit installed to support the network, it is necessary to take immediate action. However, in the multiprocessor system of the present invention, the processing of the main processor MP section is supported by the processors P5 and P6, and the processing amount of the local processor LP section is increased, thereby making it possible to smoothly cope with the increase in traffic volume. .

Further, in the multiprocessor system of the present invention, processor P5. Added a support processor similar to P6,
By having this take over a part of the processing of the main processor MP section in each of the full-function processors P1 to P4, the processing capacity of the entire multiprocessor system can be easily expanded later.

In contrast, in the conventional multiprocessor system shown in FIG. 2, when expanding the processing capacity as described above, it is necessary to add both a local processor LP and a main processor MP. In addition, in the multiprocessor systems shown in Figures 3 and 4, if you want to expand the processing capacity, it is necessary to use a local processor LP or L for each network.
Adding P section and main processor MP or MP section,
This requires complex system configuration changes such as increasing the number of networks.

In addition, in conventional multiprocessor systems, if the added processor has the same configuration as the existing processor and therefore has the same processing capacity, the utilization rate of each processor will be about 50% immediately after the processing capacity is expanded due to this addition. descend.

Furthermore, since the multiprocessor system of the present invention has a configuration in which the support processor has a reserve processing capacity to deal with an increase in traffic,
During periods of low traffic volume, the advantage is that the supporting processor can be used for purposes other than traffic processing.

On the other hand, in the conventional multiprocessor systems shown in Figures 2 to 4, the spare processing capacity is distributed among all the processors, so any of them can be used for other purposes. It is difficult to do so.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a multiprocessor system according to an embodiment of the present invention, taking traffic processing in a digital exchange as an example, and FIGS. 2 to 4 show the configuration of a conventional multiprocessor system in a digital exchange. FIG. 3 is a block diagram showing the case of traffic processing in the FIG. N1 to N4...Network, PI to P4...Processors that perform distributed processing of traffic (load). P5. P6: A processor that supports the processing of the processors P1 to P4.

Claims (1)

[Claims] It is characterized by comprising a first processor group that distributes the load, and one or more second processors that support the processing performed by each processor belonging to the first processor group in accordance with an increase in processing amount. multiprocessor system.