From: Matthew Wilcox <willy@infradead.org>
To: Joakim Tjernlund <Joakim.Tjernlund@infinera.com>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: Finding kernel RAM consumers ?
Date: Thu, 2 Jun 2022 21:11:00 +0100 [thread overview]
Message-ID: <YpkZVBQr5xk70Yxf@casper.infradead.org> (raw)
In-Reply-To: <70b4e1e46d9d63275a0dfe90f96f40ea14d89f0c.camel@infinera.com>
On Thu, Jun 02, 2022 at 07:24:23PM +0000, Joakim Tjernlund wrote:
> We have this small embedded target(aarch64) with 32 MB of RAM where the kernel consumes 14420K:
> Memory: 22444K/36864K available (3584K kernel code, 698K rwdata, 936K rodata, 320K init, 255K bss, 14420K reserved, 0K cma-reserved)
>
> I want to track down were most of this RAM is consumed so I can trim away some MBs
> but I am having a hard time finding may way.
> Is there some tool/kernel config that can help me with that?
You may find this series of articles interesting:
https://lwn.net/Articles/741494/
https://lwn.net/Articles/744507/
https://lwn.net/Articles/746780/
https://lwn.net/Articles/748198/
While they're a little old and they're targetting a much smaller system
than yours, they may give you some ideas of things you can try and tools
you can use.
next prev parent reply other threads:[~2022-06-02 20:11 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-02 19:24 Finding kernel RAM consumers ? Joakim Tjernlund
2022-06-02 20:11 ` Matthew Wilcox [this message]
2022-06-03 6:49 ` Joakim Tjernlund
2022-06-03 17:26 ` Joakim Tjernlund
2022-06-03 17:29 ` Matthew Wilcox
2022-06-03 18:11 ` Arnd Bergmann
2022-06-07 5:41 ` Alexander Dahl
2022-06-07 8:38 ` Arnd Bergmann
2022-06-07 8:54 ` Joakim Tjernlund
[not found] ` <Yp8d7NZ561/yr0HF@shell.armlinux.org.uk>
2022-06-07 10:22 ` Arnd Bergmann
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