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CONFIG_PCP_BATCH_SCALE_MAX: Maximum scale factor of PCP (Per-CPU pageset) batch allocate/free

General informations

The Linux kernel configuration item CONFIG_PCP_BATCH_SCALE_MAX:

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In page allocator, PCP (Per-CPU pageset) is refilled and drained in batches. The batch number is scaled automatically to improve page allocation/free throughput. But too large scale factor may hurt latency. This option sets the upper limit of scale factor to limit the maximum latency.



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