JPH05257720A - Virtual computer system - Google Patents

Abstract

(57) [Summary] [Purpose] Collect I / O monitoring information of the entire virtual machine system to facilitate management and operation of the virtual machine system. [Structure] The UCW 121 is provided with a flag MV 140 that can be set by the hypervisor 111. MV140
Is set to be monitored by the hypervisor 111, the input / output processing device 20 collects I / O monitoring information of the entire virtual computer system. If not, the I / O processor 20 is the I / O of the guest OSa 112.
Collect monitoring information. [Effect] I / O of the entire system by the hypervisor 111
O monitoring becomes possible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a virtual computer system, and more particularly to collecting information for managing input / output devices in the virtual computer system.

[0002]

2. Description of the Related Art In a general computer system that is not a virtual computer system, the time required for data transfer between an input / output device and a central processing unit (hereinafter referred to as I / O monitoring information) depends on the central processing unit. The central processing unit collects the monitoring information when the operator instructs the start and stop of the monitoring (corresponding to each input / output device),
It is written in the main memory and I / O is added to the control program.
Pass monitoring information.

The general specification is the publication "Enterprise System architecture / 390 Princeiples of IBM".
The details are described in "operation" (sa22-7201-00).

The control program compiles and edits these I / O monitoring information, and based on this, the system administrator grasps the usage status of each input / output device and uses it for system management and operation. ..

Further, in a virtual computer system in which computer resources are divided, control information (hereinafter referred to as UCW) managed by a central processing unit corresponding to each input / output device is provided with a virtual computer identification code. Thus, I / O monitoring information is collected for each control program (hereinafter referred to as guest OS) that operates under each virtual machine.

[0006]

When I / O monitoring is performed under a virtual computer system, I / O is monitored for each virtual computer.
The / O monitoring information was collected and the monitoring information could only be aggregated for each guest OS. Therefore, in the conventional technology, the monitoring information of the entire virtual computer system is edited from the monitoring information of each guest OS according to the operator's instruction. Must.

Further, there is a virtual computer system having an input / output device connected to a plurality of guest OSs, but since the monitoring information of such an input / output device is collected in pieces by each guest OS, It was difficult to collect accurate monitoring information of the input / output device.

For this reason, there is a demand for a function to collectively monitor the entire virtual computer system.

An object of the present invention is to provide a virtual computer system capable of collecting I / O monitoring information of the entire virtual computer system and accurate monitoring information of input / output devices connected to a plurality of guest OSs. It is to facilitate the management and operation of the system.

[0010]

In order to achieve the above object, the present invention has a plurality of input / output devices, a central processing unit, and a virtual computer control program for operating a plurality of operating systems at the same time. In the virtual computer system in which the operating system operates simultaneously, the time required for data transfer by each input / output device (hereinafter referred to as I /
O monitoring information) is measured for each input / output device as a whole virtual computer system, and a storage means for storing the measured I / O monitoring information.

[0011]

In a virtual computer system having a plurality of input / output devices, a central processing unit, and a virtual computer control program for simultaneously operating a plurality of operating systems, and a plurality of operating systems operating simultaneously,
The measuring means measures the time required for data transfer by each input / output device (hereinafter referred to as I / O monitoring information) for each input / output device as a whole virtual computer system. The storage means stores the measured I / O monitoring information.

[0012]

1 is a block diagram of an embodiment of a virtual computer system according to the present invention. In the figure, 10 is a processing device, 110
Is a main storage unit that is a storage unit that stores the measured I / O monitoring information, 120 is a HSA that is a storage unit that stores the control information of the processing apparatus, and 20 is an input / output processing apparatus, and the I / O monitoring information is It has a measuring means for measuring. Reference numeral 21 is an interface between the input / output processing device and the HSA and the main memory, and 30 and 31 are input / output devices.
Input / output interfaces 22 and 23 are connected to the input / output processing device, respectively.

The main storage unit 110 has a hypervisor 111 program for managing computer resources of the virtual computer system, and guest OSa 112 and guest OSb 113 programs running under the virtual computer. HSA120
Is control information corresponding to the input / output devices 30 and 31 U
It has CW121,122. The UCWs 121 and 122 have RIDs, which are identification codes corresponding to the virtual machines indicated by 130 and 131. The hypervisor 111, the guest OSa 112, and the guest OSb 11 in this figure
3 and the input / output processing device 20 include a main storage unit 110 and an HS.
You can access A120.

Hypervisor 111 and guest OSa11
2. The guest OSb 113 has measurement blocks 114, 116 and 117, which are storage areas for interfaces for storing monitoring information by the input / output processing device, and a storage area 123 for holding the addresses of the measurement blocks. ..

The characteristic configuration of FIG. 1 is the UCW 121, 122.
In the flag MV, which is a monitoring identification flag indicated by 140 and 141 in FIG. User is hypervisor 11
1, the hypervisor 111 causes the flag M
V140, 141 is set to ON or OFF, guest O
The monitoring by the Sa112 and the guest OSb 113 and the monitoring by the hypervisor 111 are switched.

The conventional monitoring will be described below with reference to FIG.
FIG. 3 shows the monitoring provided with the flags MV140 and 141.
Will be explained.

First, a conventional I / O monitoring method for a virtual computer system will be described with reference to FIG.

At the time of starting the virtual machine, the administrator of the computer system now uses the hypervisor 111 to
When the virtual machine is predicated, the input / output device 30 is assigned to the virtual machine.
The number of the virtual machine is set in the RID 130 provided in step 1 (step 201). After that, the virtual computer is started up, and the guest OSa 112 is started thereunder (step 202).

The guest OSa 112 sets the address of its own measurement block 116 in the storage area 123 in order to start collecting the monitoring information of the assigned input / output device (step 203). After that, the input / output processing device 20
Instruct to start monitoring (Step 20)
4). Since the instruction to start monitoring is a privileged instruction, control is once transferred to the hypervisor 111. However, since the hypervisor 111 directly instructs the input / output processing device 20 to start monitoring, it is not shown in the figure.

The input / output processing device 20 instructed to start monitoring recognizes the virtual computer and the input / output device 30 assigned to it by the number of the virtual computer attached as an operand of the instruction instructing to start the guest. OS
Start I / O monitoring of a112 (Step 20
5) Using the address of the measurement block set in the storage area 123, the measurement block 11 of the guest OSa 112
The monitoring information is written in 6 at regular time intervals (step 206).

The guest OSa 112 is a measurement block 116.
The monitoring information written in is referred to and edited (step 210).

Next, I / O monitoring of the hypervisor provided with the flags MV140 and 141 will be described with reference to FIG.

At the time of starting the virtual machine, UCW1
The number of the virtual computer is set in the RID 130 provided in 21 (step 301). Next, the hypervisor sets a flag MV140 that identifies whether the input / output device 30 receives I / O monitoring by the hypervisor or I / O monitoring by the guest OSa 112 according to the administrator's operation (step 302).

After that, the virtual computer is started up and the guest OSa 112 is started under the virtual computer (step 303).

The guest OSa 112 sets the address of its own measurement block 116 in the storage area 123 in order to start collecting the monitoring information of the assigned input / output device (step 304). After that, the input / output processing device 20
Instruct to start monitoring (Step 30)
5). Since the instruction to start monitoring is a privileged instruction, control is once transferred to the hypervisor 111 (step 306). At this time, the hypervisor determines the flag MV140 (step 307), and if monitoring by the hypervisor, the hypervisor sets the address of its own measurement block 114 in the storage area 123 (step 3).
08). In the case of monitoring by the guest OSa 112, the storage area 123 remains unchanged.

The hypervisor instructs the input / output processing device 20 to start monitoring (step 309), and the input / output processing device 20 instructed to start monitoring determines the flag MV140 (step 311). If monitoring is performed by the hypervisor. Monitoring is started irrespective of the number of the virtual computer, the address of the measurement block set in the storage area 123 is used, and the monitoring information is written in the measurement block 114 of the hypervisor at a constant time interval (step 312).

In the case of monitoring by the guest OSa 112, the virtual computer and the input / output device 30 assigned to the virtual computer are recognized by the number of the virtual computer attached as an operand of the instruction to start the guest OSa 11
2 I / O monitoring starts (step 31
3). After that, the monitoring information is written into the measurement block 116 of the guest OSa 112 at a constant time interval using the address of the measurement block set in the storage area 123.

A characteristic of FIG. 3 is that the flag MV1
By setting 40 as the guest OS, the same monitoring operation as in FIG. 2 is performed.

As can be seen from the above, the hypervisor sets the flag MV140 to switch the monitoring by the guest OS and the hypervisor.

On the other hand, here, when the guest OSa 112 and the guest OSb 113 share the input / output device 30,
The guest OSa 112 and the guest OSb 113 corresponding to the input / output device 30 normally use the UCW 121 and the UCW 122 to perform input / output control.

When I / O monitoring of the guest OS is carried out in this manner, the monitoring information concerning the input / output device 30 is distributed to the measurement blocks 116 and 117 of the guest OSa 112 and guest OSb 113.

When monitoring is performed by the hypervisor at such a time, the monitoring information relating to the input / output device 30 is collected in the measurement block 114 of the hypervisor 111.

As is apparent from the above description, according to the present invention, the entire virtual computer system can be collectively monitored, and the monitoring information of the input / output devices connected to the plurality of guest OSs can be displayed. It can be collected easily, which makes it easy to manage and operate the virtual computer system.

[0034]

According to the present invention, I / O monitoring information of the entire virtual computer system is collected and a plurality of guest O's are collected.
To provide a virtual computer system capable of collecting accurate monitoring information of an input / output device connected to S, and to facilitate management and operation of the virtual computer system.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a virtual computer system according to the present invention.

FIG. 2 is a processing flow of I / O monitoring by a guest OS.

[Fig. 3] I / by the hypervisor and guest OS
It is a processing flow of O monitoring.

[Explanation of symbols]

 10 processing device, 110 main memory unit, 120 HSA, 20 input / output processing device, 21 interface, 30, 31 input / output device, 22 and 23 interface, 111 hypervisor, 112 guest OSa, 113 guest OSb, 121, 122 UCW, 130, 131 RID, 114, 116, 117 measurement block, 123 storage area, 140, 141 flag MV

Claims (2)

[Claims] 1. A virtual computer system having a plurality of input / output devices, a central processing unit, and a virtual computer control program for operating a plurality of operating systems at the same time. Measuring means for measuring the time required for the device to transfer data (hereinafter referred to as I / O monitoring information) for each input / output device as a whole virtual computer system, and storage means for storing the measured I / O monitoring information A virtual computer system comprising: 2. A virtual computer system having a plurality of input / output devices, a central processing unit, and a virtual computer control program for simultaneously operating a plurality of operating systems, wherein a plurality of operating systems simultaneously operate in an I / O system. Input / output of I / O monitoring information and storage means for storing information indicating whether monitoring information is measured for each input / output device as a whole virtual computer system or for each operating system A virtual computer system comprising: a measuring unit that measures according to the mode information, and a storage unit that stores the measured I / O monitoring information for each device.