CPU, hard disk, memory utilization under Linux system

Install SNMP Service on 1.linux

First step: Install the SNMP service on the company 192.168.100.171 Linux virtual machine.

The second step: get the corresponding value through the nodes in the Host-resources-mib library.

Step three: You can only pass: The 1.3.6.1.2.1.25.1.1.0 node object gets to the system run time and cannot get the value to the other node.

Fourth step: Modify the/etc/snmp/snmpd.conf file

Add a line: View SystemView included. 1

Fifth step: Restart the SNMP service after modifying the configuration.

2.CPU, HDD, Memory utilization Calculation 2.1 CPU Utilization 2.1.1 formula

CPU utilization = (sum of CPU load values/number of processors) *100%

2.1.1 Algorithm (Flow) description

(1) Get the corresponding CPU load value via node: Hrprocessorload (1.3.6.1.2.1.25.3.3.1.2):

(2) There are 4 values indicating that the system has a core number of 4 cores

(3) CPU utilization = (1+1+1+1)/4 *100% = 1%

2.2 HDD Utilization Calculation 2.1.1 formula

Used hard disk size = number of used clusters * size of each cluster

Total hard disk size = total number of clusters in the hard disk * size of each cluster

HDD utilization = (used hard drive size/hard disk total size) * 100%

2.1.1 Algorithm (Flow) description

hrstorageused:1.3.6.1.2.1.25.2.3.1.6

hrstoragesize:1.3.6.1.2.1.25.2.3.1.5

hrstorageallocationunits:1.3.6.1.2.1.25.2.3.1.4

The number of clusters used per partition:

hrstorageused.31

1220045

hrstorageused.35

57

hrstorageused.36

39874

hrstorageused.37

363210

hrstorageused.40

2181544

The total number of clusters per partition:

hrstoragesize.31

12901535

hrstoragesize.35

1005704

hrstoragesize.36

495844

hrstoragesize.37

11766514

hrstoragesize.40

2181544

The size of the cluster corresponding to each partition

hrstorageallocationunits.31

4096

hrstorageallocationunits.35

4096

hrstorageallocationunits.36

1024

hrstorageallocationunits.37

4096

hrstorageallocationunits.40

2048

HDD Utilization Calculation:

HDD Utilization = (1220045 * 4096 + 57 * 4096 + 39874 * 1024 + 363210 * 4096 + 2181544 * 2048)/(12901535 * 4096 + 1005704 * 40) 96 + 495844 * 1024 + 11766514 * 4096 + 2181544 * 2048) * 100% = 9.98%

2.3 Memory Utilization Calculation 2.1.1 formula

Memory size used = number of clusters used * size of each cluster

Total memory size = Total number of families * size of each cluster

Memory Utilization = (memory size used/total memory size) *100%

2.1.1 Algorithm (Flow) description

Get memory-corresponding information:

hrstorageused:1.3.6.1.2.1.25.2.3.1.6

hrstoragesize:1.3.6.1.2.1.25.2.3.1.5

hrstorageallocationunits:1.3.6.1.2.1.25.2.3.1.4

Hrstorageused.1	1463816 number of clusters used
Hrstoragesize.1	Total number of 8045632 clusters
Hrstorageallocationunits.1	1024 size of each cluster

Memory Utilization Calculation:

Memory Utilization = (1463816 * 1024)/(8045632 *1024) *100% = 18.1

CPU, hard disk, memory utilization under Linux system