Re: [PATCH 2/3] mm/vmscan: Enable kswapd to reclaim low-protected memory

2018-12-04 Thread Xunlei Pang
On 2018/12/4 PM 3:25, Michal Hocko wrote: > On Tue 04-12-18 10:40:29, Xunlei Pang wrote: >> On 2018/12/4 AM 1:22, Michal Hocko wrote: >>> On Mon 03-12-18 23:20:31, Xunlei Pang wrote: On 2018/12/3 下午7:56, Michal Hocko wrote: > On Mon 03-12-18 16:01:18, Xunlei Pang wrote: >> There may

Re: [PATCH 2/3] mm/vmscan: Enable kswapd to reclaim low-protected memory

2018-12-03 Thread Michal Hocko
On Tue 04-12-18 10:40:29, Xunlei Pang wrote: > On 2018/12/4 AM 1:22, Michal Hocko wrote: > > On Mon 03-12-18 23:20:31, Xunlei Pang wrote: > >> On 2018/12/3 下午7:56, Michal Hocko wrote: > >>> On Mon 03-12-18 16:01:18, Xunlei Pang wrote: > There may be cgroup memory overcommitment, it will

Re: [PATCH 2/3] mm/vmscan: Enable kswapd to reclaim low-protected memory

2018-12-03 Thread Xunlei Pang
On 2018/12/4 AM 1:22, Michal Hocko wrote: > On Mon 03-12-18 23:20:31, Xunlei Pang wrote: >> On 2018/12/3 下午7:56, Michal Hocko wrote: >>> On Mon 03-12-18 16:01:18, Xunlei Pang wrote: There may be cgroup memory overcommitment, it will become even common in the future. Let's

Re: [PATCH 2/3] mm/vmscan: Enable kswapd to reclaim low-protected memory

2018-12-03 Thread Michal Hocko
On Mon 03-12-18 23:20:31, Xunlei Pang wrote: > On 2018/12/3 下午7:56, Michal Hocko wrote: > > On Mon 03-12-18 16:01:18, Xunlei Pang wrote: > >> There may be cgroup memory overcommitment, it will become > >> even common in the future. > >> > >> Let's enable kswapd to reclaim low-protected memory in

Re: [PATCH 2/3] mm/vmscan: Enable kswapd to reclaim low-protected memory

2018-12-03 Thread Xunlei Pang
On 2018/12/3 下午7:56, Michal Hocko wrote: > On Mon 03-12-18 16:01:18, Xunlei Pang wrote: >> There may be cgroup memory overcommitment, it will become >> even common in the future. >> >> Let's enable kswapd to reclaim low-protected memory in case >> of memory pressure, to mitigate the global direct

Re: [PATCH 2/3] mm/vmscan: Enable kswapd to reclaim low-protected memory

2018-12-03 Thread Michal Hocko
On Mon 03-12-18 16:01:18, Xunlei Pang wrote: > There may be cgroup memory overcommitment, it will become > even common in the future. > > Let's enable kswapd to reclaim low-protected memory in case > of memory pressure, to mitigate the global direct reclaim > pressures which could cause jitters

[PATCH 2/3] mm/vmscan: Enable kswapd to reclaim low-protected memory

2018-12-03 Thread Xunlei Pang
There may be cgroup memory overcommitment, it will become even common in the future. Let's enable kswapd to reclaim low-protected memory in case of memory pressure, to mitigate the global direct reclaim pressures which could cause jitters to the response time of lantency-sensitive groups.