lkml.org 
[lkml]   [2015]   [Jul]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 0/3] zsmalloc: small compaction improvements
On (07/15/15 01:52), Minchan Kim wrote:
> > alrighty... again...
> >
> > > >
> > > > /sys/block/zram<id>/compact is a black box. We provide it, we don't
> > > > throttle it in the kernel, and user space is absolutely clueless when
> > > > it invokes compaction. From some remote (or alternative) point of
> > >
> > > But we have zs_can_compact so it can effectively skip the class if it
> > > is not proper class.
> >
> > user triggered compaction can compact too much.
> > in its current state triggering a compaction from user space is like
> > playing a lottery or a russian roulette.
>
> We were on different page.

> I thought the motivation from this patchset is to prevent compaction
> overhead by frequent user-driven compaction request because user
> don't know how they can get free pages by compaction so they should
> ask compact frequently with blind.

this is exactly the motivation for this patchset. seriously.

whatever.

-ss


\
 
 \ /
  Last update: 2015-07-15 02:41    [W:0.088 / U:0.764 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site