Re: Kernel Memory Management

Subject: Re: Kernel Memory Management
From: Chris Ruprecht (
Date: Thu Jul 05 2001 - 09:46:04 MDT

Hi Robert,

I wasn't worried that I'd run out of 'good stuff', specially not with 768 MB
of physical and 1 GB of virtual memory. I was just wondering how the kernel
decides what to and what not to cache/buffer/share. I could go and read the
kernel source code (and spend the next 4 weeks doing so and the following 4
months in some asylum :), but there must be an easier way to figure this
out. I'm sure, someone, somewhere, has an answer which could be put into a
line or two or three.

Also, I have the same memory configuration on my Pismo as I have on a RedHat
Box (768 MB). The Pismo reports a total of 707000KB, the RedHat box reports
776000 KB (rounded figures). I'm wondering what happened to the 69000 KB in
the Mac ... the Kernel can't be THAT big ;).

Best regards,

----- Original Message -----
From: "Robert Vogt IV" <>
To: <>
Sent: Thursday, July 05, 2001 10:02 AM
Subject: Re: Kernel Memory Management

> Chris,

> The concept of Linux is that, unlike WINDOZE or the MacOS, it uses all
> available memory (there's no point having it if you don't use it...).
> essentially buffers/caches everything it can, to speed things up, and
> releases the memory when you need it. I wouldn't worry until you get
> from daemons that they can't allocate memory, etc... :)
> Sincerely,
> Robert Vogt IV
> ArborHost

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This archive was generated by hypermail 2a24 : Thu Jul 05 2001 - 08:53:31 MDT