Re: [PATCH v4.4.y] mm, vmstat: make quiet_vmstat lighter

2019-05-13 Thread Greg KH
On Mon, May 13, 2019 at 08:12:37AM +0200, Daniel Wagner wrote: > From: Michal Hocko > > [ Upstream commit f01f17d3705bb6081c9e5728078f64067982be36 ] > > Mike has reported a considerable overhead of refresh_cpu_vm_stats from > the idle entry during pipe test: > > 12.89% [kernel] [k]

[PATCH v4.4.y] mm, vmstat: make quiet_vmstat lighter

2019-05-13 Thread Daniel Wagner
From: Michal Hocko [ Upstream commit f01f17d3705bb6081c9e5728078f64067982be36 ] Mike has reported a considerable overhead of refresh_cpu_vm_stats from the idle entry during pipe test: 12.89% [kernel] [k] refresh_cpu_vm_stats.isra.12 4.75% [kernel] [k] __schedule