Ejecute este procedimiento en cada nodo de cálculo para cambiar la asignación de recursos de memoria y CPU en el nivel del núcleo.
La herramienta realiza estos cambios:
Detecta automáticamente los dominios raíz.
Calcula los recursos mínimos y máximos para todos los dominios y solo le permite seleccionar cantidades válidas.
Presenta capacidades de memoria viables para que seleccione, en función de sus asignaciones de núcleo.
Modifica los recursos de dominio según las opciones elegidas.
Detiene dominios que no son principales (si es necesario).
Reinicia el dominio principal con los nuevos recursos (si es necesario).
Levanta los dominios que no son principales con nuevos recursos (si es necesario).
En este ejemplo, se mueven 6 núcleos y memoria de 512 GB del dominio dedicado ssccn3-dom1 a otro dominio dedicado principal.
En esta tabla se muestra el plan de asignación (consulte Plan CPU and Memory Allocations).
|
La herramienta no continúa si hay algún dominio inactivo.
Responda cuando se le solicite. Pulse Intro para seleccionar el valor predeterminado.
# /opt/oracle.supercluster/bin/osc-setcoremem
osc-setcoremem
v2.0 built on Aug 27 2015 23:09:35
Current Configuration: SuperCluster Fully-Populated M6-32 Base
+----------------------------------+-------+--------+-----------+--- MINIMUM ----+
| DOMAIN | CORES | MEM GB | TYPE | CORES | MEM GB |
+----------------------------------+-------+--------+-----------+-------+--------+
| primary | 12 | 1024 | Dedicated | 2 | 32 |
| ssccn3-dom1 | 36 | 3072 | Dedicated | 2 | 32 |
| ssccn3-dom2 | 1 | 16 | Root | 1 | 16 |
| ssccn3-dom3 | 2 | 32 | Root | 2 | 32 |
+----------------------------------+-------+--------+-----------+-------+--------+
| unallocated or parked | 45 | 4048 | -- | -- | -- |
+---------------------------------+-------+--------+-----------+-------+--------+
[Note] Following domains will be skipped in this session.
Root Domains
------------
ssccn3-dom2
ssccn3-dom3
CPU allocation preference:
1. Socket level
2. Core level
In case of Socket level granularity, proportional memory capacity is
automatically selected for you.
Choose Socket or Core level [S or C] C
Step 1 of 2: Core Count
primary : specify number of cores [min: 2, max: 46. default: 12] : 18
you chose [18] cores for primary domain
ssccn3-dom1 : specify number of cores [min: 2, max: 30. default: 2] : 30
you chose [30] cores for ssccn3-dom1 domain
Configuration In Progress After Core Count Selection:
+----------------------------------+-------+--------+-----------+--- MINIMUM ----+
| DOMAIN | CORES | MEM GB | TYPE | CORES | MEM GB |
+---------------------------------+-------+--------+-----------+-------+--------+
| primary | 18 | 1024 | Dedicated | 2 | 96 |
| ssccn3-dom1 | 30 | 3072 | Dedicated | 2 | 128 |
| *ssccn3-dom2 | 1 | 16 | Root | 1 | 16 |
| *ssccn3-dom3 | 2 | 32 | Root | 2 | 32 |
+----------------------------------+-------+--------+-----------+-------+--------+
| unallocated or parked | 45 | 4048 | -- | -- | -- |
+---------------------------------+-------+--------+-----------+-------+--------+
Step 2 of 2: Memory Capacity
(must be 16 GB aligned)
primary: specify memory capacity in GB [min: 96, max: 2016. default: 2016]: 1536
you chose [1536 GB] memory for primary domain
ssccn3-dom1: specify memory capacity in GB [min: 128, max: 2560. default: 2560]: 2560
you chose [2560 GB] memory for ssccn3-dom1 domain
Configuration In progress After Memory Capacity Selection:
+---------------------------------+-------+--------+-----------+--- MINIMUM ----+
| DOMAIN | CORES | MEM GB | TYPE | CORES | MEM GB |
+---------------------------------+-------+--------+-----------+-------+--------+
| primary | 18 | 1536 | Dedicated | 2 | 96 |
| ssccn3-dom1 | 30 | 2560 | Dedicated | 2 | 128 |
| *ssccn3-dom2 | 1 | 16 | Root | 1 | 16 |
| *ssccn3-dom3 | 2 | 32 | Root | 2 | 32 |
+---------------------------------+-------+--------+-----------+-------+--------+
| unallocated or parked | 45 | 4048 | -- | -- | -- |
+---------------------------------+-------+--------+-----------+-------+--------+
Following domains will be stopped and restarted:
ssccn3-dom1
This configuration requires rebooting the control domain.
Do you want to proceed? Y/N : y
IMPORTANT NOTE:
+- -+
| After the reboot, osc-setcoremem attempts to complete CPU, memory re-configuration. |
| Please check syslog and the state of all domains before using the system. |
| eg., dmesg | grep osc-setcoremem ; ldm list | grep -v active ; date |
+- -+
All activity is being recorded in log file:
/opt/oracle.supercluster/osc-setcoremem/log/osc-setcoremem_activity_08-28-2015_15:59:31.log
Please wait while osc-setcoremem is setting up the new CPU, memory configuration.
It may take a while. Be patient and do not interrupt.
0% 10 20 30 40 50 60 70 80 90 100%
|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|
*=====*=====*=====*=====*=====*=====*=====*=====*=====*=====*
Broadcast Message from root (pts/1) on etc5mdbadm0301 Fri Aug 28 16:03:13...
THE SYSTEM etc5mdbadm0301 IS BEING SHUT DOWN NOW ! ! !
Log off now or risk your files being damaged
Task complete with no errors.
#
Puede verificar la asignación de recursos y comprobar los posibles errores de osc-setcoremem de diversas maneras:
Ejemplo:
# dmesg | grep osc-setcoremem Aug 28 16:08:56 etc5mdbadm0301 root[1913]: [ID 702911 user.alert] osc-setcoremem: core, memory re-configuration complete. system can be used for regular work. # ldm list NAME STATE FLAGS CONS VCPU MEMORY UTIL NORM UPTIME primary active -n-cv- UART 144 1572096M 0.1% 0.1% 5m ssccn3-dom1 active -n---- 5001 240 2620928M 1.3% 1.3% 2m ssccn3-dom2 active -n---- 5002 8 16G 0.1% 0.1% 3d 16m ssccn3-dom3 active -n--v- 5003 16 32G 0.1% 0.1% 3d 16m