Messages in this thread | | | Date | Tue, 22 Sep 2020 13:43:44 +0100 | From | Chris Down <> | Subject | Re: [External] Re: [PATCH] mm/memcontrol: Add the drop_cache interface for cgroup v2 |
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Chunxin Zang writes: >Please forgive me for not being able to understand why setting >memory.low for Type_A can solve the problem. >In my scene, Type_A is the most important, so I will set 100G to memory.low. >But 'memory.low' only takes effect passively when the kernel is >reclaiming memory. It means that reclaim Type_B's memory only when >Type_A in alloc memory slow path. This will affect Type_A's >performance. >We want to reclaim Type_B's memory in advance when A is expected to be busy.
That's what kswapd reclaim is for, so this distinction is meaningless without measurements :-)
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