From: Joel Fernandes <joel@joelfernandes.org>
To: Christian Hansen <chansen3@cisco.com>,
"open list:MEMORY MANAGEMENT" <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: idle-page marking in page-types tool
Date: Sun, 24 Mar 2019 23:10:55 -0400 [thread overview]
Message-ID: <20190325031055.GA51047@google.com> (raw)
In-Reply-To: <CAJWu+ort=_YTh2B=y7iPuhFGVAP2joJugNrmgg3K0yun4uPFQQ@mail.gmail.com>
Hi,
Ping? Thanks a lot.
On Fri, Mar 15, 2019 at 08:32:18AM -0700, Joel Fernandes wrote:
> Hi Christian,
> I am looking into idle page tracking and noticed the page-types tool
> in tools/vm/. It seems you are only marking pages as idle if the -f
> option is passed ("Walk file address space").
>
> I was curious why you decided do the marking of idle pages only for
> files and not anonymous pages?
> As doing in the following code:
> if (opt_mark_idle && opt_file)
> page_idle_fd = checked_open(SYS_KERNEL_MM_PAGE_IDLE, O_RDWR);
>
> We mainly want to do idle page tracking for anonymous regions to
> determine howmuch of its anonymous memory is a process really using
> actively.
>
> But I was curious what was the reason you did it this way?
>
> thanks,
> - Joel
>
prev parent reply other threads:[~2019-03-25 3:11 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-15 15:32 idle-page marking in page-types tool Joel Fernandes
2019-03-25 3:10 ` Joel Fernandes [this message]
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