01 - Disable IPC, Timers and Audit

Summary

This fragment disables legacy inter-process communication features, auditing, high-resolution timers, and several process accounting/statistics options. These features are often unnecessary in embedded systems where resource usage must be minimal and predictable.

Configuration breakdown

System V IPC and message queues

CONFIG_SYSVIPC
CONFIG_POSIX_MQUEUE
CONFIG_CROSS_MEMORY_ATTACH

• Disables System V-style inter-process communication (IPC) mechanisms like message queues and semaphores.

Kernel auditing system

CONFIG_AUDIT

• Disables the audit subsystem, reducing kernel size and improving performance when auditing is not needed.

High-resolution timers

CONFIG_HIGH_RES_TIMERS

• Disables high-resolution timer support; lowers precision but reduces timer overhead.

Preemption model

CONFIG_PREEMPT_VOLUNTARY_BUILD
CONFIG_PREEMPT_DYNAMIC

• Selects voluntary kernel preemption for a balance between performance and latency.

Process accounting and task statistics

CONFIG_BSD_PROCESS_ACCT
CONFIG_TASKSTATS

• Disables BSD-style process accounting.

Pressure Stall Information

        CONFIG_PSI

• Disables Pressure Stall Information (PSI) for monitoring resource pressure.

Where to find a cfg sample

For beagle-board and linux kernell 6.6.32:

01-Config-Disabled-IPC-Timers-Audit.cfg