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From: Pintu Agarwal <pintu.ping@gmail.com>
To: linux-mm@kvack.org, open list <linux-kernel@vger.kernel.org>,
	kernelnewbies@kernelnewbies.org
Subject: Creating compressed backing_store as swapfile
Date: Mon, 5 Nov 2018 20:31:46 +0530	[thread overview]
Message-ID: <CAOuPNLjuM5qq3go9ZFZcK0G5pQxTQb0DY36xu+8SL4vC4zJntw@mail.gmail.com> (raw)
Message-ID: <20181105150146.s8yIBKAsXawvDJHy44iF7FYymM_UfjkTBJrffae4kFI@z> (raw)

Hi,

I have one requirement:
I wanted to have a swapfile (64MB to 256MB) on my system.
But I wanted the data to be compressed and stored on the disk in my swapfile.
[Similar to zram, but compressed data should be moved to disk, instead of RAM].

Note: I wanted to optimize RAM space, so performance is not important
right now for our requirement.

So, what are the options available, to perform this in 4.x kernel version.
My Kernel: 4.9.x
Board: any - (arm64 mostly).

As I know, following are the choices:
1) ZRAM: But it compresses and store data in RAM itself
2) frontswap + zswap : Didn't explore much on this, not sure if this
is helpful for our case.
3) Manually creating swapfile: but how to compress it ?
4) Any other options ?


Thanks,
Pintu

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             reply	other threads:[~2018-11-05 15:02 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-05 15:01 Pintu Agarwal [this message]
2018-11-05 15:01 ` Creating compressed backing_store as swapfile Pintu Agarwal
     [not found] ` <20181105155815.i654i5ctmfpqhggj@angband.pl>
2018-11-05 16:07   ` Austin S. Hemmelgarn
2018-11-05 16:07     ` Austin S. Hemmelgarn
2018-11-05 16:14     ` valdis.kletnieks at vt.edu
2018-11-05 16:14       ` valdis.kletnieks
2018-11-05 16:28       ` Austin S. Hemmelgarn
2018-11-05 16:28         ` Austin S. Hemmelgarn
2018-11-05 16:53         ` valdis.kletnieks at vt.edu
2018-11-05 16:53           ` valdis.kletnieks
2018-11-05 16:55           ` Austin S. Hemmelgarn
2018-11-05 16:55             ` Austin S. Hemmelgarn
2018-11-08  9:51     ` Pintu Agarwal
2018-11-08  9:51       ` Pintu Agarwal
2018-11-05 16:12 ` valdis.kletnieks at vt.edu
2018-11-05 16:12   ` valdis.kletnieks
2018-11-08  9:46   ` Pintu Agarwal
2018-11-08  9:46     ` Pintu Agarwal

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