From: riel@surriel.com (Rik van Riel)
To: kernelnewbies@lists.kernelnewbies.org
Subject: Paging of Kernel Memory
Date: Tue, 13 Sep 2011 11:30:19 -0400 [thread overview]
Message-ID: <4E6F770B.4060101@surriel.com> (raw)
In-Reply-To: <CAGdaadbARXQ50LCtvcO8qw_0iH2x0k9m5Ay06Kbbgvz=fQEykg@mail.gmail.com>
On 09/07/2011 12:41 AM, Mulyadi Santosa wrote:
> Hi :)
>
> On Wed, Sep 7, 2011 at 09:44, ashish anand<ashishanand26cs@gmail.com> wrote:
>> Hi
>> on wed 7th sep Christopher Harvey wrote
>>>> It means that it can't be swapped to your swap partition, even if
>>>> you're not using it.
>>
>> this thing I understood it pretty well but what about the line
>> "Therefore, every byte of
>> memory you consume is one less byte of available physical memory".What is
>> the meaning of this line and why it is so.
>
> could you please next time cut out the unrelated message? :)
>
> Anyway, that passage means that the bigger your kernel image is, the
> lesser your free memory are. This is simply because your kernel image
> is entirely loaded and locked in RAM.
This was a concern back in the day where systems had 4MB of
RAM and the kernel took up 1MB.
However, nowadays the kernel takes up a few MB in a system
with several GB of memory, so it really no longer matters...
--
All rights reversed.
next prev parent reply other threads:[~2011-09-13 15:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-07 2:44 Paging of Kernel Memory ashish anand
2011-09-07 4:41 ` Mulyadi Santosa
2011-09-13 15:30 ` Rik van Riel [this message]
-- strict thread matches above, loose matches on Subject: below --
2011-09-06 12:18 Vijay Chauhan
2011-09-06 14:38 ` Christopher Harvey
2011-09-08 6:54 ` Asutosh Das
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