Messages in this thread | | | Date | Fri, 9 Jul 2021 10:41:00 -0400 | From | Johannes Weiner <> | Subject | Re: [PATCH 1/3] mm, memcg: add mem_cgroup_disabled checks in vmpressure and swap-related functions |
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On Thu, Jul 08, 2021 at 05:05:07PM -0700, Suren Baghdasaryan wrote: > Add mem_cgroup_disabled check in vmpressure, mem_cgroup_uncharge_swap and > cgroup_throttle_swaprate functions. This minimizes the memcg overhead in > the pagefault and exit_mmap paths when memcgs are disabled using > cgroup_disable=memory command-line option. > This change results in ~2.1% overhead reduction when running PFT test > comparing {CONFIG_MEMCG=n, CONFIG_MEMCG_SWAP=n} against {CONFIG_MEMCG=y, > CONFIG_MEMCG_SWAP=y, cgroup_disable=memory} configuration on an 8-core > ARM64 Android device. > > Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
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