Red Hat ENTERPRISE LINUX AS 2.1 - Instalační příručka stáhnout pdf (Strana 78)

Chapter 19. Pre-Installation Preparation and Verification

To verify shmmni, execute:

cat /proc/sys/kernel/shmmni

shmmni = 4096

To verify the shmall parameter, execute the command below. shmall is used in 10g R1.

cat /proc/sys/kernel/shmall

shmall = 2097152

To verify shmmin, execute:

ipcs -lm |grep "min seg size"

shmmin = 1

Note that shmseg is hardcoded in the kernel, the default is much higher.

shmseg = 10

To verify semmsl, execute:

cat /proc/sys/kernel/sem | awk '{print $1}'

semmsl = 250

To verify semmns, execute:

cat /proc/sys/kernel/sem | awk '{print $2}'

semmns = 32000

To verify semopm, execute:

cat /proc/sys/kernel/sem | awk '{print $3}'

semopm = 100

To verify semmni, execute:

cat /proc/sys/kernel/sem | awk '{print $4}'

semmni = 128

To verify file-max, execute:

cat /proc/sys/fs/file-max

file-max = 65536

To verify ip_local_port_range, execute:

cat /proc/sys/net/ipv4/ip_local_port_range

ip_local_port_range = 1024 65000

Note

Do not change the value of any kernel parameter on a system where it is already higher

than listed as minimum requirement.

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Red Hat ENTERPRISE LINUX AS 2.1 - Instalační příručka Strana 78