On Tue 20-08-19 17:48:23, Alex Shi wrote: > This patchset move lru_lock into lruvec, give a lru_lock for each of > lruvec, thus bring a lru_lock for each of memcg. > > Per memcg lru_lock would ease the lru_lock contention a lot in > this patch series. > > In some data center, containers are used widely to deploy different kind > of services, then multiple memcgs share per node pgdat->lru_lock which > cause heavy lock contentions when doing lru operation. Having some real world workloads numbers would be more than useful for a non trivial change like this. I believe googlers have tried something like this in the past but then didn't have really a good example of workloads that benefit. I might misremember though. Cc Hugh. -- Michal Hocko SUSE Labs
