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1 .. SPDX-License-Identifier: GPL-2.0
4 Multi-Gen LRU
6 The multi-gen LRU is an alternative LRU implementation that optimizes
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38 0x0001 The main switch for the multi-gen LRU.
41 theoretically worsen lock contention (mmap_lock). If it is
42 disabled, the multi-gen LRU will suffer a minor performance
46 0x0004 Clearing the accessed bit in non-leaf page table entries as
49 disabled, the multi-gen LRU will suffer a negligible
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68 experience. The multi-gen LRU offers thrashing prevention to the
79 ``N=3000`` make janks less noticeable at the risk of premature OOM
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147 generations less than or equal to ``min_gen_nr``.
149 ``- memcg_id node_id min_gen_nr [swappiness [nr_to_reclaim]]``
151 ``min_gen_nr`` should be less than ``max_gen_nr-1``, since
152 ``max_gen_nr`` and ``max_gen_nr-1`` are not fully aged (equivalent to
161 estimation step. This less forceful approach limits the impacts on the