linux-kernel - Re: [RFC PATCH v1 0/3] Rebase DAMON

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <20220223071232.GD6270@swarm08>
Date:   Wed, 23 Feb 2022 16:12:32 +0900
From:   Jonghyeon Kim <tome01@...u.ac.kr>
To:     SeongJae Park <sj@...nel.org>
Cc:     Jonghyeon Kim <tome01@...u.ac.kr>, Jonathan.Cameron@...wei.com,
        amit@...nel.org, benh@...nel.crashing.org, corbet@....net,
        david@...hat.com, dwmw@...zon.com, elver@...gle.com,
        foersleo@...zon.de, gthelen@...gle.com, markubo@...zon.de,
        rientjes@...gle.com, shakeelb@...gle.com, shuah@...nel.org,
        linux-damon@...zon.com, linux-mm@...ck.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v1 0/3] Rebase DAMON_RECALIM for NUMA system

On Wed, Feb 23, 2022 at 02:11:46PM +0900, Jonghyeon Kim wrote:
> On Tue, Feb 22, 2022 at 09:53:02AM +0000, SeongJae Park wrote:
> > Hello Jonghyeon,
> > 
> > On Fri, 18 Feb 2022 19:26:08 +0900 Jonghyeon Kim <tome01@...u.ac.kr> wrote:
> > 
> > > 
> > > Current DAMON_RECALIM is not compatible with the NUMA memory system. To
> > > proactively reclaim memory, DAMON_RECLAIM kernel thread(kdamond) has to wake up
> > > before kswapd does reclaim memory. However, the current watermark for proactive
> > > reclamation is based on entire system free memory. So, though the one memory
> > > node is fully used, kdamond is not waked up.
> > > 
> > > These patches clarify watermarks of DAMOS and enable monitoring per NUMA node
> > > proactive reclamation on DAMON_RECLAIM.
> > 
> > The high level concept of this patchset looks good to me.  Nevertheless, maybe
> > there is some rooms for improvement.  I left some comments on patches.
> > 
> > 
> > Thanks,
> > SJ
> > 
> 
> Hello SeongJae,
> 
> Thanks for your patient comments about these patches. I will clean up and
> develop these patches including your suggestion and correction in next version.
> 
> 
> Jonghyeon