In order to ensure that RMS runs normally, the following kernel parameters need to be set. Therefore, when RMS is installed, the definitions of the parameters in /etc/system are automatically updated if not defined or defined with smaller value than the following "Value".
Kernel parameter | Characteristics | Value | Parameter description |
|---|---|---|---|
msgsys:msginfo_msgmnb | Maximum value | 4194304 | Maximum size of the message that can be stored in a single message. |
msgsys:msginfo_msgmni | Addition | 8192 | Maximum number of message queue identifiers that can be used for the entire system. |
msgsys:msginfo_msgtql | Maximum value | 65535 | Maximum number of message headers |
Note
In PRIMECLUSTER, message queues are used for interprocess communication.
When RMS is running, 2076 message queues are reserved from 0x4d2.
If you are using message queues for any applications, use the range other than the above (0x4d2 to 0xcee).
Even if definitions of the kernel parameters in /etc/system are automatically added/updated, change the value as necessary in consideration of the value required by other software and user applications.
