JPH05120064A - Trace acquisition system - Google Patents

Abstract

PURPOSE:To attain the high speed of the editing and the output of trace information. CONSTITUTION:This system is provided with a grouped information item setting means 13 which sets an objective information item to be grouped from among each information item to constitute the trace information picked through the tracing operation of one time, and delivers a relative position in the trace information to a trace information write-in means 14, and a trace information addition processing means which finds out the trace information having the same value as the value of the information item having been the object of grouping among each information item to constitute the trace information written just before by the trace information write-in means 14 from among the trace information written before in a trace area, and embeds an address on a memory of this trace information there. Thus, in the case that the trace information of the same event is retrieved and outputted at the time of editing and outputting the trace information, the trace information of the same event can be taken out directly even without searching it one after another.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trace collection method, and more particularly to a trace collection method in a computer system having a function of collecting trace information.

[0002]

2. Description of the Related Art In recent years, it has become essential for a computer system to include a trace collection function and a trace edit output function as a function of leaving effective information during failure analysis. Previously, it was made on the premise of reducing the overhead of collecting trace information as much as possible to improve throughput, so when editing trace information and outputting it to an output device such as a line printer, a mechanism that is easy to edit is used. Little thought was given to having a function. Therefore,
No consideration was given to improving the processing speed when editing and outputting trace information. However, due to recent technological innovation of hardware, some overhead is absorbed, and conversely, not all of the collected trace information is output to a line printer, but only the information necessary for failure analysis is output to a terminal such as a CRT. The ability to output quickly in a conversational form has become desirable, and several methods have been proposed.

In the conventional trace collecting method of this type, when the trace information is written in a memory or the like as a trace collecting function, an address on the memory for writing the next trace information is added to the trace information just written. By writing the information, the processing speed at the time of editing and outputting the trace information is improved.

[0004]

In the above-mentioned conventional trace collection method, the beginning position of the next trace information can be directly recognized at the time of trace editing output, and the collected trace information is sequentially searched. When outputting or outputting, the start address of the trace information to be output next can be recognized quickly, which is effective in improving the processing speed. However, it is necessary to have the same value for each information item that composes the trace information. However, there is a drawback that it has no effect when searching or outputting the same type of trace information.

An object of the present invention is to set an information item to be grouped from the information items constituting the trace information collected by one trace operation, and set the relative position in the trace information to the trace information. Among the grouping information item setting means 13 to be passed to the writing means 14 and each of the information items constituting the trace information written immediately before by the trace information writing means 14, the value is the same as the value of the information item which is the object of the gradation. Trace information having a value is searched from the trace information already written in the trace area, and the trace information addition processing means for embedding the address on the memory of this trace information therein is provided, and the target of grouping in advance. When setting the information item to be set, memorizing the relative position of the information item in the trace information, and writing the trace information Among the information items that make up the race information, the values of the information items for which grouping has been set are the same. By associating the trace information with a pointer, the above-mentioned drawbacks are eliminated and the same when editing and outputting the trace information. An object of the present invention is to provide a trace collection method that can directly retrieve the trace information of an event without searching in order when the trace information of the event is output or output, and can improve the processing speed.

[0006]

According to the trace collection method of the present invention, in a trace collection method in a computer system having a function of collecting trace information and a function of editing and outputting the collected trace information, (A) trace request Acceptance: Trace information collecting means for collecting the relevant trace information, (B) trace information writing means for writing the trace information collected by the trace information collecting means in the trace area of the memory, and (C) collecting by one trace operation. Grouping information item setting means for passing to the trace information writing means the relative position in the trace information of the information items to be grouped among the respective information items constituting the trace information to be recorded, (D) trace information Of each information item that constitutes the trace information written immediately before by the writing means Then, the trace information having the same value as the value of the information item targeted for grouping is searched from the trace information already written in the trace area, and the trace information immediately before is written in this trace information already written in the trace area. Trace information addition processing means for embedding the address on the memory of the trace information written in, and (E) For each possible value of the information item set by the grouping information item setting means from the information items forming the trace information And a value-based address storage table for storing the address on the memory last written by the trace information writing means.

[0007]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram of a trace sampling system according to an embodiment of the present invention.

In FIG. 1, the trace collection method of this embodiment is the trace collection unit 11 and the trace information collection means 1.
2, grouping information item setting means 13, trace information writing means 14, and trace information addition processing means 15
, Address storage table 16 by value, and trace area 17
And the block X1 whose address on the memory starts from B1
8 and the table X whose address on the memory starts from T1
19 and a block Y20 whose address on the memory starts from B2.

FIG. 2 is a block diagram showing the contents of the trace area 17 in FIG.

In FIG. 2, the trace area 17 of this embodiment is composed of a first record 21, a second record 22, a third record 23, a fourth record 24 and a fifth record 25.

FIG. 3 is a block diagram showing the contents of the value-based address storage table 16 shown in FIG.

In FIG. 3, the value-based address storage table 16 of this embodiment is composed of an item value 31 and an address section 32.

The trace information collecting means 12 receives a trace request from the outside of the trace collecting section 11, analyzes the request contents, and collects necessary information.

The trace area 17 is an area prepared in advance for recording trace information.

The grouping information item setting means 13 sets the information items to be grouped among the information items constituting the trace information regarding the trace information collected in one trace operation, and The relative position of the information item in the trace information is passed to the trace information writing means 14.

The trace information writing means 14 sequentially writes the trace information collected by the trace information collecting means 12 in the trace area 17, and the information item indicated by the relative position of the trace information passed from the grouping target item setting means 13. The address storage table 16 for each value of the address of the trace information on the trace area 17 for each value of
It is for writing to.

The trace information addition processing unit 15 sets the value of the information item set by the grouping target item setting unit 13 among the information items constituting the trace information written immediately before by the trace information writing unit 14 as the value of the information item. Trace information having the same value is searched from the trace information already written in the trace area 17, and the trace information written in the trace information immediately before by the trace information writing means 14 in this trace information is stored in the memory. It is for embedding the address of. The value-based address storage table 16 is finally written by the trace information writing means 14 for each possible value of the information items set by the grouping information item setting means 13 from among the information items forming the trace information. This is for storing the address of the trace information on the memory.

Next, the operation of the trace collection method of this embodiment will be described with reference to the drawings.

First, according to the trace collection method of the present embodiment by the grouping information setting means 13, the trace ID indicating the type of trace information or the issuer who has issued the trace request is selected from among the information items constituting the trace information. It is selected as a grouping target, and the relative position in the trace information is passed to the trace information writing means 14.

Then, the trace information collecting means 12 receives the trace request A. The trace information collecting means 12
The trace request A is analyzed to recognize that the request is to trace the contents of the block X18, and the address B1 of the block X18 is passed to the trace information writing means 14 as the trace information address. The trace information writing means 14 determines the block X18 from the trace information address.
B1 which is the address of the trace ID and which is the trace ID indicating the content of the block X18 and the type of trace information
1 is written in the trace area 17 in a predetermined format. Here, the content written by the trace information writing means 14 is shown by the first record 21 in FIG.

Further, the trace information writing means 14 is
The address M2, which is the address of the second record 22 for writing the next trace information in the trace area 17, is written in the position next to the content of the block X18 that has just been written, and the effective size S1 of the first record 21 is set to the first. The record 21 is written at the position next to the trace ID ID1. Finally, in the item value column of the value-based address storage table 16, a column in which the value is not entered is searched from above, and the trace ID indicated by the relative position of the trace information passed from the grouping information item setting means 13 is searched there. A certain ID1 is written, and M1 which is the address of the first record 21 is written and stored in the address part 32 thereof.

Next, the trace information collecting means 12 receives the trace request B. The trace information collecting means 12 analyzes the trace request B, recognizes that it is a request to trace the contents of the table X19, and passes the address T1 of the table X19 to the trace information writing means 14 as a trace information address. The trace information writing means 14 extracts the address T1 of the table X19 from the trace information address, and the content of the table X19 and the trace ID ID2 indicating the type of trace information.
Is written in the trace area 17 in a predetermined format. Here, the contents written by the trace information writing means 14 are shown by the second record 22 in FIG.

Further, the trace information writing means 14 is
The address M3, which is the address of the third record 23 for writing the next trace information in the trace area 17, is written in the position next to the content of the table X19 that has just been written, and the effective size S2 of the second record 22 is set to the second. The record 22 is written in the position next to the trace ID ID2. Finally, in the item value column of the value-based address storage table 16, a column in which the value is not entered is searched from above, and the trace ID indicated by the relative position of the trace information passed from the grouping information item setting means 13 is searched there. A certain ID2 is written, and M2 which is the address of the second record 22 is written and stored in the address part 32.

Next, the trace information collecting means 12 receives the trace request C. The trace information collecting means 12 analyzes the trace request C, recognizes that it is a request to trace the contents of the block Y20, and passes the address B2 of the block Y20 to the trace information writing means 14 as a trace information address. The trace information writing means 14 extracts the address B2 of the block Y20 from the trace information address and writes the content of the block Y20 and the trace ID ID3 indicating the type of trace information in the trace area 17 in a predetermined format. Here, the content written by the trace information writing means 14 is shown by the third record 23 in FIG.

Further, the trace information writing means 14 is
The address M4, which is the address of the fourth record 24 for writing the next trace information in the trace area 17, is written in the position next to the content of the block Y20 that has just been written, and the effective size S3 of the third record 23 is set to the third. The record 23 is written in the position next to the trace ID ID3. Finally, in the item value column of the value-based address storage table 16, a column in which the value is not entered is searched from above, and the trace ID indicated by the relative position of the trace information passed from the grouping information item setting means 13 is searched there. A certain ID3 is written, and M3, which is the address of the third record 23, is written and stored in the address part 32 thereof.

Next, the trace information collecting means 12 receives the trace request A again. Trace information collecting means 12
Analyzes the trace request A, recognizes that it is a request to trace the contents of the block X18, and
The address B1 is passed to the trace information writing means 14 as the trace information address. The trace information writing means 14 determines the block X from the trace information address.
B1 which is the address of 18 is taken out, and block X18
And the trace ID ID1 indicating the type of trace information are written in the trace area 17 in a predetermined format. Here, the content written by the trace information writing means 14 is shown by the fourth record 24 in FIG.

Further, the trace information writing means 14 is
M5, which is the address of the fifth record 25 in which the next trace information on the trace area 17 is written, is set to block X18.
Write to the next position of the contents of, and the 4th record 2
The effective size S1 of 4 is written in the position next to the trace ID ID1 of the fourth record 24.

Next, an address storage table 16 for each group number
Since the ID1 has already been written among the item values of 1 and the address has already been stored in the address part 32, the trace information addition processing means 15 causes the trace information addition processing means 15 to write the first record previously written in the trace area by the trace information writing means 14. The address M4, which is the address of the fourth record 24, is written in the last area of 21 to associate the first record 21 with the fourth record 24. Finally, by writing M4, which is the address of the fourth record 24, in the address part 32 of ID1 of the item values of the value-based address storage table 16, the ID is written.
The address of 1 is updated and stored.

[0030]

As described above, according to the trace collection method of the present invention, the information items to be grouped are set in advance, the relative positions of the information items in the trace information are stored, and the trace is performed. When writing information, the trace information of the same event is edited when the trace information is edited and output by associating the trace information that has the same value of the information item for which grouping is set among the information items that configure the trace information with the pointer. When retrieving or outputting information, it is possible to directly retrieve the information without sequentially searching, and there is an effect that the processing speed can be improved.

[Brief description of drawings]

FIG. 1 is a block diagram of a trace sampling system according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing the contents of a trace area 17 in FIG.

3 is a configuration diagram showing the contents of a value-based address storage table 16 of FIG.

[Explanation of Codes] 11 Trace Collection Unit 12 Trace Information Collection Means 13 Grape Information Item Setting Means 14 Trace Information Writing Means 15 Trace Information Addition Processing Means 16 Address Storage Table by Value 17 Trace Areas 18 Blocks X 19 Tables X 20 Blocks Y 21 1st record 22 2nd record 23 3rd record 24 4th record 25 5th record 31 Item value 32 Address part

Claims (1)

[Claims] 1. In a trace collection method in a computer system having a function of collecting trace information and a function of editing and outputting the collected trace information, (A) a trace information collecting means for receiving a trace request and collecting the corresponding trace information. (B) trace information writing means for writing the trace information collected by the trace information collecting means in a trace area of the memory, and (C) for each information item constituting the trace information collected by one trace operation. Grouping information item setting means for passing the relative position in the trace information of the information item to be grouped among the grouping information item setting means, (D)
Among the information items forming the trace information written immediately before by the trace information writing means, the trace information having the same value as the value of the information item targeted for grouping has already been written in the trace area. (E) Trace information adding processing means for locating in the trace information which is searched out from the trace information and embedded in the trace information already written in the trace area with the address of the trace information just written in the memory, and (E) trace information. A value-based address storage table that stores the address on the memory last written by the trace information writing unit for each value that can be taken by the information item set by the grouping information item setting unit from among the information items A trace collection method comprising: