Messages in this thread | | | Date | Fri, 15 May 2020 09:44:43 +0200 | From | Michal Hocko <> | Subject | Re: [PATCH 3/3] mm: adjust vm_committed_as_batch according to vm overcommit policy |
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On Fri 08-05-20 15:25:17, Feng Tang wrote: > When checking a performance change for will-it-scale scalability > mmap test [1], we found very high lock contention for spinlock of > percpu counter 'vm_committed_as':
Btw. you are focusing on a microbenchmark here but I believe that there are non-synthetic worklaods which would benefit from a larger batch. E.g. large in memory databases which do large mmaps during startups from multiple threads. -- Michal Hocko SUSE Labs
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