JPS63201843A - Performance measuring instrument - Google Patents

Abstract

PURPOSE:To measure the performance of an information processor without stopping the measurement with a simple constitution by providing two counters and alternately operating them. CONSTITUTION:The busy signal of an attachment connected by a bus is formed by a signal converting part 7 connected to the bus of the information processor 1. This busy signal is ANDed to a clock to have a busy clock signal to the counter. A timer informing pulse is generated for every constant time by a microcomputer 2 to switch the busy clock. Accordingly, while the counter 4A is operated, the counter 4B is stopped and during this stop, the microcomputer 2 reads data from the counter 4B.

Description

[Detailed Description of the Invention] [Summary] In a performance measuring device for an information processing device, two sets of counters are provided in order to perform continuous measurement with a simple structure, so that the counters are operated alternately and the data is collected from the stopped counters. It was designed to lead the way.

[Industrial application field]

The present invention relates to a performance measuring device for an information processing device, and particularly to a measuring device using a counter.

Performance of an information processing device includes software execution time and bus busy rate. In particular, a large number of attachments are connected to the bus, and one attachment may temporarily use the bus for a long time, which greatly affects performance.

Therefore, a method is needed to collect and analyze data at regular intervals.

[Conventional technology]

Conventional performance measurement methods for information processing devices include methods using only a counter and methods using a counter and a buffer.

In the former method, the counter 4 counts the signals from the information processing device 1 as shown in FIG.
, and the microcomputer 2 collects data.

In the latter method, as shown in FIG. 4, the counter 4 is held for a certain period of time, the data is copied to the buffer 6, and the microcomputer collects the data in the buffer 6.

[Problem to be solved]

In the method shown in FIG. 3, the counter is stopped during data collection, so performance cannot be measured during that time. Further, in the method shown in FIG. 4, when an LSI having a plurality of channels is used for the counter, a problem arises in that the control circuit for copying to the puffer becomes complicated.

The present invention was created in view of this point, and an object of the present invention is to provide a performance measuring device that has a simple configuration and can measure the performance of an information processing device without stopping measurement. It is said that

[Means for solving problems]

FIG. 1 is a diagram showing the principle of the performance measuring device of the present invention.

In FIG. 1(a), 1 is an information processing device whose performance is to be measured, 2 is a microcomputer that collects and analyzes data, 3 is a switching control unit that switches counters, and 4A and 4B have multiple channels. Counter LSI 5 is a read completion flag for determining whether the microcomputer 2 has finished reading data.

[Effect]

FIG. 1 (bl is a diagram for explaining the present invention in detail. In the present invention, two sets of counters 4A and 4B perform counting operations alternately, and the microcomputer 2 reads the data of the stopped counters. When the read is completed, the read completion flag 5 is set.The switching control unit 3 switches the signal from the information processing device 1 at regular time intervals so that one of the counters always operates.

〔Example〕

FIG. 2 is a block diagram of an embodiment for measuring the bus busy rate of an information processing device. In the figure, 7 indicates a signal conversion section. Note that the same reference numerals as in FIG. 1 indicate the same parts. In the illustrated example, counters 4A and 4B each have six channels of counters.

The signal converter 7 connected to the path of the information processing device 1 generates a busy signal for the axotiment connected to the path. Accommodations refer to, for example, disk devices, line adapters, memory, etc. that are connected to a common bus.

This busy word is ANDed with the clock and becomes the busy clock signal to the counter's channel.

The switching control section 3 supplies this signal to either the counter 4A or 4B.

Next, this switching operation will be explained. A clock is always supplied to channel ch6 of the counter 4A, and a timer notification pulse is generated at regular intervals. This time is set by the microcomputer 2. Figure 1 (0)
As shown in FIG. 2, the counter 4A operates from the start, and after a certain period of time, the busy clock is switched by the timer notification pulse, the counter 4A stops, and the counter 4B starts operating. Then, the microcomputer 2 reads the data of channels ch1 to ch5 of the stopped counter 4A. Next, after a certain period of time, the counter is switched again using a timer notification pulse. This is repeated to operate the counter alternately.

At this time, if the predetermined time is short, there is a possibility that the counter may be switched while the microcomputer 2 is reading data, so the read completion flag 5 is set after the data reading is completed. If the timer notification pulse is generated even though the flag 5 is not set, the switching control unit 3 issues an error notification to the microcomputer 2. This flag 5 is cleared at the time of switching.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, one of the counters is always operating, so the measurement never stops, and the structure can be simplified by using an LSI having multiple channels for the counter. Become something.

[Brief explanation of the drawing]

FIG. 1 is a principle diagram of the present invention, FIG. 2 is a block diagram showing an embodiment of the present invention, and FIGS. 3 and 4 are block diagrams of a conventional example. DESCRIPTION OF SYMBOLS 1... Information processing device, 2... Microcomputer, 3... Switching control part, 4A and 4B... Counter, 5
...Read completion flag, 6...Buffer, 7...
Signal converter.

Claims (1)

[Claims] Measuring the performance of the information processing device (1) using a counter,
In a performance measuring device that collects measurement data at fixed time intervals using a microcomputer (2), two sets of counters (
4A, 4B), a counter switching control section (3), and a read completion flag (5), one counter (4A or 4B) performs a counting operation, and the other counter (4B or 4B) that is stopped performs a counting operation. The microcomputer (2) collects measurement data from the read completion flag (5) from the switching control unit (3A), and accesses the read completion flag (5).
) A performance measuring device characterized in that the counters (4A, 4B) are switched at fixed time intervals and the counters (4A, 4B) are operated alternately.