lkml.org 
[lkml]   [2017]   [Oct]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] mm: mlock: remove lru_add_drain_all()
On Wed, Oct 18, 2017 at 04:17:30PM -0700, Shakeel Butt wrote:
> Recently we have observed high latency in mlock() in our generic
> library and noticed that users have started using tmpfs files even
> without swap and the latency was due to expensive remote LRU cache
> draining.

Hm. Isn't the point of mlock() to pay price upfront and make execution
smoother after this?

With this you shift latency onto reclaim (and future memory allocation).

I'm not sure if it's a win.

--
Kirill A. Shutemov

\
 
 \ /
  Last update: 2017-10-22 17:22    [W:0.122 / U:0.080 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site