JP3125761B2 - Working set calculation processing apparatus and working set calculation processing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a working set calculation processing device and a working set calculation processing method in a computer system having virtual storage and control functions.

[0002]

2. Description of the Related Art An example of a conventional working set calculation processing method of this type is described in a user's manual "Dynamic Resource Management Manual <DRM>," published from May 1997, from page 9 to page 9 of the sixth edition. This is described in “Chapter 2 Control in DRAM” on page 18 and in “Chapter 5 Control by User” on pages 28 to 30. In this working set calculation processing method, the processing of calculating the working set of a job is controlled by the use status of the real memory of the job and the user's designation of the amount of real memory allocated to the job.

Japanese Patent Application Laid-Open No. Hei 10-31624 discloses that a user can set and / or change the memory priority of a job from a terminal or the like during the start of the job or during execution after the start of the job. A "memory priority control method" is described in which a working set of a memory used by a job is controlled for each job in accordance with the changed memory priority of the job.

[0004]

However, in the former of the above-mentioned prior arts, the allocation amount of the real memory is specified, and since this allocation amount is fixed, the virtual memory is allocated during execution. In the case of a job in which space (hereinafter referred to as virtual space) is allocated / released and the amount of virtual space changes, the amount of real memory required by the job also changes with the change in the amount of virtual space. There is a problem that a user cannot specify appropriate working set control for such a job.

In the "memory priority control method" described in Japanese Patent Application Laid-Open No. Hei 10-31624, a user sets a memory priority of a job and / or
Alternatively, the technique is a technique of controlling a working set on a job basis in response to a change, and does not deal with a case where a virtual space is allocated / released during a job execution and a virtual space amount changes.

Accordingly, an object of the present invention is to provide a working set calculation processing apparatus and a working set calculation processing method that enable a user to appropriately designate a control of a working set for a job whose virtual space amount changes. Is to do. Another object of the present invention is to provide a working set calculation processing device and a working set calculation processing method that allow a user to dynamically change the designation of control of a working set.

[0007]

SUMMARY OF THE INVENTION Accordingly, a working set calculation processing device according to the present invention is a working set calculation processing device in a computer system having a virtual storage control function, the allocation ratio of a real memory allocated to a job to a virtual space. Is characterized in that the calculated value of the working set is controlled so as not to exceed the ratio input by the user. Further, the working set calculation processing device of the present invention assigns a virtual space to a job.
Virtual space amount calculating means for calculating the virtual space amount when the release is performed;
Real memory amount calculating means for calculating the amount of real memory when the release is performed; working set calculating means for calculating a working set of the job from the amount of real memory calculated by the real memory amount calculating means; Threshold input means for inputting in advance the threshold of the allocation ratio,
Calculating the allocation ratio based on the calculated amount of the virtual space and the amount of the real memory, and when the value is larger than the threshold value, the allocation ratio calculation unit that notifies the working set calculation unit, The working set calculating means reduces the calculated working set and activates a page-out in response to the notification. Further, the working set calculation processing device of the present invention includes:
The threshold can be dynamically changed by a user. Further, in the working set calculation processing method of the present invention, in the working set calculation processing method in a computer system having a virtual storage control function, a procedure in which a user inputs a threshold value of an allocation ratio of a real memory allocated to a job to a virtual space. Calculating the amount of virtual space when virtual space is allocated / released to the job, and calculating the amount of real memory when real memory is allocated / released to the job Calculating the allocation ratio according to the calculated amount of virtual memory space and the amount of real memory; and reducing the calculated working set when the calculated allocation ratio is greater than the threshold. And a step of activating a page-out of the real memory. The present invention relates to a computer system having a virtual storage control function, comprising: a means for controlling a working set calculation process according to a ratio of an amount of real memory allocated to a job to an amount of virtual space; Means for the user to input a threshold value of the ratio between the amount of real memory and the amount of virtual space, so that the user can specify appropriate control of the working set calculation processing even in a job in which the amount of virtual space changes. Such a function is provided.

[0008]

Next, an embodiment of the present invention will be described. Referring to FIG. 1, a working set calculation processing apparatus according to the present invention includes a job 1 having a virtual space 2 to which a real memory 3 is allocated, and a virtual space allocating / releasing means for allocating / releasing a virtual space to the job 1. 4
Virtual space amount calculating means 5 for calculating the virtual space amount allocated to job 1, allocation / release means 6 for allocating / releasing real memory to job 1, job 1
Real memory amount calculating means 7 for calculating the amount of real memory allocated to the job; calculating the working set of job 1 from the value of the real memory amount calculated by the real memory amount calculating means 7; Working set calculation means 8 for reducing the calculated value of the working set of job 1 in response to the notification from
And an allocation ratio of the real memory amount calculated by the real memory amount calculation unit 7 to the virtual space amount calculated by the virtual space amount calculation unit 5, for example, a percentage, and this value is used by the threshold value input unit 10. If the threshold value is larger than the threshold value previously input by the user, the real memory allocation ratio calculating means 9 notifies the working set calculating means 8 to decrease the calculated value of the working set of the job 1.
Then, the contents of the real memory 3 of the job 1 and the threshold value inputting means 10 for the user to input the threshold value of the ratio in advance to the allocation ratio calculating means 9 are copied to the secondary storage device 12. It comprises a page-out means 11 for releasing the real memory 3 by the real memory allocation / release means 6, and a secondary storage device 12.

The outline of the operation of this embodiment is as follows. Either the virtual space allocation / release means 4 changes the virtual space amount of the virtual space 2 of the job 1 or the real memory allocation / release means 6
Is changed, the virtual space amount calculating means 5 calculates the virtual space amount of the virtual space 2 of the job, and the real memory amount calculating means 7 calculates the real memory amount of the real memory 3 of the job 1. calculate. The real memory allocation ratio calculating means 9 calculates the ratio between the virtual space amount of the virtual space 2 of the job 1 and the real memory amount of the real memory 3, and this ratio is given by the user in advance by the threshold value inputting means 9. If it is larger than the threshold value, the working set of the job 1 calculated by the working set calculation means 8 is reduced, and the page-out means 11 is activated. The page-out means 11 stores the contents of the real memory 3 of the job 1 if necessary.
2 and the real memory 3 is released by the real memory allocation / release means 6 to reduce the amount of the real memory 3 allocated to the job 1.

When the amount of virtual space or the amount of real memory of job 1 changes in this way, the ratio of the amount of real memory to the amount of virtual space is calculated, and the ratio is calculated so as to be smaller than a threshold value given in advance by the user. By controlling, for the job 1 in which the virtual space amount changes, a real memory in a ratio given in advance to the virtual space amount can be allocated, and the user can specify appropriate control of the working set calculation process. You can do it.

Next, the operation of the present embodiment will be described in detail with reference to the flow charts of FIGS. 1, 2, 3 and 4. In FIG. 1, the virtual space allocation / release unit 4 may change the virtual space amount of the virtual space 2 of the job 1 while the job 1 is being executed. That is, if a new virtual space is additionally allocated to the virtual space 2, the virtual space 2 increases, and if a part of the virtual space 2 is released, the virtual space 2 decreases. In this case, as shown in FIG. 2, in response to the virtual space allocation / release (S11), the virtual space amount calculating means 5 reflects the change in the virtual space amount of the job 1 to reflect the change in the virtual space amount. Calculation is performed (S12). If the amount of virtual space changes,
Since the real memory allocation ratio also changes, the real memory allocation ratio calculating means 9 divides the real memory amount held by the real memory amount calculating means 7 by the virtual space amount calculated in S12 to obtain the real memory allocation ratio. Is calculated (S13).

In FIG. 1, while the job 1 is being executed, the real memory allocation / release means 6 may change the real memory amount of the real memory 3 of the job 1. That is, the real memory 3 increases when a new real memory is additionally allocated to the real memory 3, and the real memory 3 decreases when a part of the real memory 3 is released. In this case, as shown in FIG. 3, in response to the real memory allocation / release (S21), the real memory amount calculating means 7 reflects the change in the real memory amount of the job 1.
Calculates the actual memory amount after the change (S22). further,
In order to reflect the change in the actual memory amount to the working set,
The working set calculation means 8 calculates the working set of job 1 (S23). If the real memory amount changes, the real memory allocation ratio also changes. Therefore, the real memory allocation ratio calculation means 9 calculates the real memory amount obtained in S22 by the virtual space amount held by the virtual space amount calculation means 5. The actual memory allocation ratio is calculated by dividing (S24).

In FIG. 1, when both the amount of the virtual space 2 and the amount of the real memory 3 change during the execution of the job 1, as described above, The quantity, working set value and real memory allocation ratio will all be calculated.

As a result of the calculation of the real memory allocation ratio in S13 and S24, the ratio increases when the virtual space 2 is released and the real memory 3 does not change. When the memory 3 is allocated, the virtual space 2 is released and the real memory 3 is allocated.
Is allocated, the virtual space 2 and the real memory 3 are allocated, but when the allocated amount of the real memory 3 is relatively large, the virtual space 2 and the real memory 3 are released but the released amount of the virtual space 2 becomes This is when it is relatively large. Conversely, the case where the allocation ratio decreases is the opposite of the case where the allocation ratio increases.

As described above, when the real memory allocation ratio is calculated, as shown in FIG. 4, in response to the real memory allocation ratio calculation (S31), the allocation ratio calculating means 9 is executed.
Is the actual memory allocation ratio set in advance by the user from the threshold value input means 10, and S13,
The actual memory allocation ratio calculated in S24 is compared (S32). As a result, if the calculated value is equal to or smaller than the threshold value, the process ends. This is because there is no problem since the amount of the real memory 3 allocated to the virtual space 2 is smaller than the amount set by the user.

As a result of the comparison in S32, when the calculated value is larger than the threshold value, the actual memory allocation ratio calculating means 9 notifies the working set calculating means 8 to reduce the working set of the job 1 (S33). The working set calculation means 8 having received the notification reduces the working set calculated in S23 and activates the page-out means 11. The page-out means 11
If necessary, the contents of the area of the real memory 3 corresponding to the real memory amount to be reduced are copied to the secondary storage device 12 and paged out (S34). Frees the real memory (S3)
5).

Then, the real memory amount is calculated again in accordance with the flow of FIG. 3 (S22), the real memory allocation ratio is calculated (S24), and compared with the threshold value in S32 of FIG. Such a loop is repeated until the calculated value of the actual memory allocation ratio becomes equal to or less than the threshold value in S32.

Next, another embodiment of the present invention will be described with reference to the drawings. Referring to FIG. 5, this embodiment is the embodiment shown in FIG. 1 in that a threshold value changing means 13 is added.

The operations in steps S42 to S45 in FIG. 6 are the same as those in steps S32 to S35 in FIG. In step S41 in FIG. 6, the threshold value changing means 9 (1 in FIG. 5)
According to 3), when the user changes the threshold value of the real memory allocation ratio, the real memory allocation ratio calculation means is activated to compare the real memory allocation ratio with the changed threshold value (S42). When the threshold value is not changed by the threshold value changing unit 13, the process follows the flowchart of FIG.

The present embodiment has a new effect that the user can dynamically change the threshold value of the real memory allocation ratio. A program for causing a computer to execute the above-described working set calculation processing method may be recorded on a recording medium such as a magnetic disk semiconductor memory, and read and executed by a computer.

[0021]

An effect of the present invention is that the user can appropriately specify the control of the working set for a job whose virtual space amount changes. The reason is that the user specifies the ratio of the real memory amount to the virtual space amount, and when the virtual space amount or the real memory amount of the job changes, the ratio of the real memory amount to the virtual space amount Is calculated, and by controlling this to be smaller than the threshold value given in advance by the user, the control is performed so that the real memory amount at a fixed ratio is allocated according to the change in the virtual space amount. It is.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a working set calculation processing device according to the present invention.

FIG. 2 is a flowchart of a calculation of a real memory allocation ratio associated with virtual space allocation / release in the embodiment shown in FIG. 1;

FIG. 3 is a flowchart for calculating a real memory allocation ratio associated with real memory allocation / release in the embodiment shown in FIG. 1;

FIG. 4 is a flowchart of a process involved in calculating an actual memory allocation ratio in the embodiment shown in FIG. 1;

FIG. 5 is a block diagram showing another embodiment of the working set calculation processing device of the present invention.

FIG. 6 is a flowchart of a process associated with a change in an actual memory allocation ratio in the embodiment shown in FIG. 5;

[Explanation of symbols]

 Reference Signs List 1 job 2 virtual space 3 real memory 4 virtual space allocation / release means 5 virtual space amount calculation means 6 real memory allocation / release means 7 real memory amount calculation means 8 working set calculation means 9 real memory allocation ratio calculation means 10 threshold Input means 11 Page out means 12 Secondary storage device 13 Threshold value changing means

Continuation of the front page (56) References JP-A-8-249234 (JP, A) JP-A-1-283630 (JP, A) JP-A-60-39248 (JP, A) JP-A-63-113740 (JP) , A) "ACOS Software ACOS-4 / MVP XE Dynamic Resource Management Manual <DRM>DDE74-3", NEC Corporation, issued (March 1990, 3rd edition), pp. 21-27 "ACOS Software ACOS-4 / MVP XE Job Management Manual DDA71-5", NEC Corporation, issued (April 1989, 5th edition), pp. 53-56 "ACOS Software ACOS-4 / MVP XE Supervisor Manual DDA72-3", NEC Corporation, issued (March 1988, 3rd edition), 62-67 (58) Fields surveyed (Int. Cl. ^7, DB name) G06F 9/46 G06F 12/08 G06F 12/12 G06F 12/02 G06F 9/06 CSDB ( JPO)

Claims (6)

(57) [Claims] In a working set calculation processing device in a computer system having a virtual storage control function, a work is performed so that an allocation ratio of a real memory allocated to a job to a virtual memory space does not exceed a ratio input by a user. A working set calculation processing device for controlling a calculated value of a set. 2. The method according to claim 1, wherein the control is performed by releasing a real memory by page-out.
A working set calculation processing device as described. 3. A virtual space amount calculating means for calculating an amount of the virtual memory space when a virtual memory space is allocated / released for a job, and a real memory is allocated / released for the job. A real memory amount calculating means for calculating the amount of the real memory; a working set calculating means for calculating a working set of the job from the amount of the real memory calculated by the real memory amount calculating means; Threshold value input means for previously inputting the threshold value, and the allocation ratio is calculated based on the calculated amount of the virtual memory space and the calculated amount of the real memory. Allocation ratio calculation means for notifying the set calculation means, wherein the working set calculation means responds to the notification to 3. The working set calculation processing device according to claim 2, wherein the page-out is activated by reducing the number of packets. 4. The working set calculation processing device according to claim 1, wherein the threshold value can be dynamically changed by a user. 5. A working set calculation processing method in a computer system having a virtual storage control function,
A procedure in which a user inputs a threshold value of an allocation ratio of a real memory to a virtual memory space allocated to a job, and calculates an amount of the virtual memory space when the virtual memory space is allocated / released for the job. A procedure for calculating the amount of real memory when the real memory is allocated / released for the job; and calculating the allocation ratio based on the calculated amount of virtual memory space and the amount of real memory. A working set comprising: reducing the calculated working set when the calculated allocation ratio is greater than the threshold; and activating a page-out of the real memory. Calculation processing method. 6. A working set calculation processing method in a computer system having a virtual storage control function, wherein a user inputs a threshold of an allocation ratio of a real memory to a virtual memory space allocated to a job;
A procedure for calculating the amount of the virtual memory space when the virtual memory space is allocated / released for the job, and calculating the amount of the real memory when the real memory is allocated / released for the job. Calculating the allocation ratio according to the calculated amount of virtual memory space and the amount of real memory; and reducing the calculated working set when the calculated allocation ratio is greater than the threshold. A computer-readable recording medium recording a program for causing a computer to execute a method including a step of causing the computer to execute a page-out operation of the real memory.