Linux ways to set kernel parameters1 How to view kernel parametersUse the "sysctl-a" command to view all kernel parameters that are in use. Kernel parameters are more (generally up to 500 items), according to the prefix is divided into the following
Compile the Linux kernel-general Linux technology-Linux programming and kernel information. For more information, see the following. I. Backup important files
Back up the following files to quickly restore the original state of the system when a
HP-UX 11.0 Kernel Parameters
1.1 Kernel configuration Concept
Abstract, kernel configurations are a collection of all administrator options and settings that are used to determine kernel behavior and functionality in the HP-UX.
1.1.1 kernel
DB2 11.1For root installations, the Database Manager uses a formula to automatically adjust kernel parameter settings and Eliminat E The need for manual updates to these settings.Before you beginyou must has root authority to modify kernel
It mainly analyzes the items in/etc/sysctl. conf in detail. All the content is collected and sorted through the network for your convenience.
System Optimization items:
Kernel. sysrq = 0
# Use the sysrq key combination to understand the current
Linux general technology-Linux programming and kernel information. For more information, see the following section. To provide services to multiple customers at the same time, network servers must support this multi-task service method in some way.
The message queue is often created, and no space left on device is reported.
In this case, you can modify the msgmni parameter.
Msgmni --- this parameter determines the maximum number of Message Queue running simultaneously in the system.
Msgmni:
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In addition,
First, Message Queuing
1. Message Queuing provides a way to send a piece of data from one process to another
2. Each block of data is considered to have a type, and the receiver process receives a data block that can have a different type value
3.
Linux IPC parameter settings-command method: Echo 80>/proc/sys/Vm/overcommit_ratio, etc
Msgmnb
Maximum byte limit for each message queue.
Msgmni
The maximum number of message queues of the entire system.
Msggsz
The size (in bytes) of the message
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