Kernel Newbies archive on lore.kernel.org
 help / color / Atom feed
From: "Valdis Klētnieks" <valdis.kletnieks@vt.edu>
To: Anupam Kapoor <anupam.kapoor@gmail.com>
Cc: Sumit Kumar <sumit686215@gmail.com>, kernelnewbies@kernelnewbies.org
Subject: Re: transfer physical memory page to swap disk
Date: Sat, 18 Jan 2020 10:10:14 -0500
Message-ID: <412530.1579360214@turing-police> (raw)
In-Reply-To: <CAEXHiZE4kX8sz3M6fmWzQO=DDY5WZKrWc5MuNeV49iOwXYX48A@mail.gmail.com>

[-- Attachment #1.1: Type: text/plain, Size: 679 bytes --]

On Wed, 15 Jan 2020 18:23:05 +0530, Anupam Kapoor said:
> On Wed, 15 Jan 2020 at 6:02 PM Sumit Kumar <sumit686215@gmail.com> wrote:
> > Does C/C++ provide any API / system call that enables user to force the
> > application to transfer some its physical pages to swap disk ? If so, is it
> > also possible to obtain the least used page using some API ?
> would madvise not serve your needs ?

There's this word "force" in the question.

The problem is that madvise() is *advice* to the kernel, not a strict
guarantee.  There's a difference between "If you need to move pages
to disk, consider these pages first" and "Move them to disk now, whether
you really wanted to or not".


[-- Attachment #1.2: Type: application/pgp-signature, Size: 832 bytes --]

[-- Attachment #2: Type: text/plain, Size: 170 bytes --]

_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

  reply index

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-15 12:31 Sumit Kumar
2020-01-15 12:42 ` aleix sanchis ramírez
2020-01-15 12:53 ` Anupam Kapoor
2020-01-18 15:10   ` Valdis Klētnieks [this message]
2020-01-19 10:01     ` Sumit Kumar
2020-01-19 10:55     ` Anupam Kapoor
2020-01-19 11:14       ` Valdis Klētnieks
2020-01-19 12:45         ` Anupam Kapoor
2020-01-19 13:18           ` Valdis Klētnieks
2020-01-19 16:01             ` Anupam Kapoor
2020-01-19 16:59 ` Bernd Petrovitsch

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=412530.1579360214@turing-police \
    --to=valdis.kletnieks@vt.edu \
    --cc=anupam.kapoor@gmail.com \
    --cc=kernelnewbies@kernelnewbies.org \
    --cc=sumit686215@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Kernel Newbies archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/kernelnewbies/0 kernelnewbies/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 kernelnewbies kernelnewbies/ https://lore.kernel.org/kernelnewbies \
		kernelnewbies@kernelnewbies.org
	public-inbox-index kernelnewbies

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernelnewbies.kernelnewbies


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git