Message-ID: <714677164.65036.1606846940544.JavaMail.j2ee-conf@bmc1-rhel-confprod1> Subject: Exported From Confluence MIME-Version: 1.0 Content-Type: multipart/related; boundary="----=_Part_65035_1558747376.1606846940544" ------=_Part_65035_1558747376.1606846940544 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Content-Location: file:///C:/exported.html Computation details for AIX metrics

# Computation details for AIX metrics

=20
=20
=20
=20

This topic provides computation information for AIX metrics and indicato= rs. For more information, refer to the following sections:

=20 =20

=20
=20
=20
=20
=20
=20

## AIX Hos= t - CPU Pressure Index

An index between 0 and 100. High= er the value, higher the pressure. This metric is calculated for vSphe= re hosts and clusters.

The following points about CPI should be noted:

• CPI Value: CPU Pressure Index will have a value in the= range of 0 =E2=80=93 100. Higher the number, higher the pressure.
• Minimum value: Minimum value of CPU pressure =3D CPU U= tilization
• Penalty Points: There are Penalty Points for High CPU Queue Length scenarios and they are elaborated in the= table that follows.

The following table elaborates computation and other important deta= ils for AIX Host - CPU Pressure Index (CPI):

=20 =20
SPI
Calculation
Penalty Threshold Penalty Comp= utation
&n= bsp; &n= bsp; &n= bsp; Mi= n Max Condition

Minimum

Penalty

multiplier

factor

CPU_QUEUE >=3D
Part 1

AIX Host CPU Queue Leng= th:

AIX Host CPU Queue Length =3D

Average of CPU Queue Length of partitions=20
that exceed CPU Queue Length threshold

Configurable

Low<= /strong>: 2
High: 4

5

20

4 x Threshold

4

3 x Threshold

3

2 x Threshold

2

1 x Threshold

1
COUNT >=3D
Part 2

AIX CPU Queue Exceed Co= unt:

AIX CPU Queue Exceed Count  =3D=20
Number of Partitions that exceed threshold

Configurable

Default= : 5

5 20

4 x Threshold

4
3 x Threshold 3
2 x Threshold 2
1 x Threshold 1
Combined CPI

If ```CPU_Utilizatio= n > CPU_Util_thresh```, then:

```CPU Pressure Inde= x =3D CPU_Utilization```

Else:

<= p>```CPU Pressure Index =3D CPU Utilization + MAX (Part 1, Part 2)= ```

## AIX = Host - Memory Pressure Index

An index between 0 and 100. High= er the value, higher the pressure.

The following points about MPI should be note= d:

• MPI Value: MPI will have a value in the range of 0 =E2= =80=93 100. Higher the number, higher the pressure.
• Minimum value: Minimum value of memory pressure =3D Re= al Memory Utilization
• Penalty points: There are penalty points for P= aging and Virtual Memory Used scenarios, and they= are discussed in detail in the table that follows.

The following table elaborates computation and other important details f= or AIX Host - Memory Pressure Index (MPI):

=20 =20
MPI
Calculation
Penalty Threshold

P= enalty

Comp= utation
Mi= n Ma= x Condition Minimum
Penalty
multiplier
factor
CPU_QUEUE >=3D
Part 1 Consumed/Active Ratio
(C/A Rati= o)
Configurable

Low: 32 MB/sec
High: 64 MB/sec
5

20

4 x Threshold

4

3 x Threshold

3

2 x Threshold

2
1 x Threshold

1

COUNT >=3D
Part 2 Ballooning Configurable

Default= : 20

5

20

4 x Threshold

4

3 x Threshold

3
2 x Threshold 2
1 x Threshold 1
VMU >=3D
Part 3 Over-commitment

Configurable

Low: 70%=
High: 80%

1

20

Threshold

VMU -
Threshold
Combined MPI

If ```Real_Memory_Ut= ilization > Memory_Util_thresh```:
```Memory Pressure= Index =3D Real_Memory_Utilization```

Else:
<= code>Memory Pressure Index =3D Memory Utilization + MAX (Part1, Part 2) + P= art 3

=20
=20
=20
=20
=20
=20
=20
=20
=20
=20
=20
=20

## Related topics AIX views

=20
=20
=20
------=_Part_65035_1558747376.1606846940544--