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CONFIG_VIRT_CPU_ACCOUNTING_NATIVE: Deterministic task and CPU time accounting

General informations

The Linux kernel configuration item CONFIG_VIRT_CPU_ACCOUNTING_NATIVE:

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Select this option to enable more accurate task and CPU time accounting. This is done by reading a CPU counter on each kernel entry and exit and on transitions within the kernel between system, softirq and hardirq state, so there is a small performance impact. In the case of s390 or IBM POWER > 5, this also enables accounting of stolen time on logically-partitioned systems.



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