Oracle Audio Technologies B31679-01 Manual de usuario descargar pdf (Pagina 37)

TimesTen Installation 29

When TimesTen uses large pages, the HugePages_Free file in /proc/

meminfo

changes.

Semaphores To view existing kernel parameter settings, log in as

root and use:

# /sbin/sysctl -a

Shared

memory

To increase the shared memory size to 2048 MB, for example, as root,

edit the

/etc/sysctl.conf file by adding the line:

kernel.shmmax=2147483648

If your configuration is greater than 8GB, you should also increase the

value of the

shmall parameter. The value is in KB and should be equal

ceil(SHMMAX/PAGE_SIZE). Page size is generally 4K on x86 systems

and 16K on Itanium. For example, for a 64GB data store on Itanium,

you should specify the following parameters values:

kernel.shmmax=68719476736

kernel.shmall=4194304

To increase the shared memory size without rebooting, use:

% /sbin/sysctl -w kernel.shmmax=2147483648

If you have your kernel configured with the /proc file system and it is

mounted, then the current maximum shared memory segment size (in

bytes) can be viewed by the following command:

% cat /proc/sys/kernel/shmmax

You can also change this value by the following command

% echo 2147483648 > /proc/sys/kernel/shmmax

This command has the same effect as the sysctl command.

IPC Client/

Server

On Red Hat Linux systems, to enable more than 6 ShmIpc Client/Server

connections, add the line:

kernel.sem = "250 32000 128 100"

to the /etc/sysctl.conf file and reboot.

This sets the parameter values as follows:

SEMMSL=250

SEMMNS=32000

SEMOPM=100

SEMMNI=100

Client/Server

and Cache

Administrator

If you are installing the Cache Connect to Oracle option and plan to use

the web-based Cache Administrator or if you plan to use TimesTen

client/server configurations, install the following RPM packages:

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