From: Jan-Hendrik Zab <xaero@gmx.de>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Re: A pared down kernel config
Date: Sun, 6 Jan 2008 12:57:48 +0100 [thread overview]
Message-ID: <20080106125748.006d0839@darkness.hell.de> (raw)
In-Reply-To: <20080106065812.GA5725@yarmook.hjz>
On Sun, 6 Jan 2008 10:58:12 +0400
Yahya Mohammad <mfyahya@gmail.com> wrote:
> > > Just to know more on this... Is there really any reason to worry
> > > about kernel size... I mean in most cases with a standard desktop
> > > install?
> > >
> >
> > yes. Bigger kernel = more cpu cache used up = slower system.
>
> Does all of the kernel reside in cpu cache all the time? Or can parts
> of it get moved to system RAM? What about modules that are loaded from
> disk?
No, it does not. The CPU caches are used differently. Partly, they
become something like read-ahead caches due to the fact that the CPU
can only read hole cache lines.
See http://lwn.net/Articles/252125/ for a good and recent documentation.
Jan-Hendrik Zab
--
Jan-Hendrik Zab <jan.h.zab@gmail.com>
Tel: +49 (0)15154625819
--
gentoo-user@lists.gentoo.org mailing list
next prev parent reply other threads:[~2008-01-06 11:59 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-05 16:05 [gentoo-user] A pared down kernel config reader
2008-01-05 16:19 ` Hemmann, Volker Armin
2008-01-05 17:18 ` [gentoo-user] " reader
2008-01-05 17:32 ` Hemmann, Volker Armin
2008-01-05 18:21 ` reader
2008-01-05 19:45 ` Alan McKinnon
2008-01-05 23:18 ` reader
2008-01-05 23:23 ` reader
2008-01-06 0:45 ` Hemmann, Volker Armin
2008-01-06 6:58 ` Yahya Mohammad
2008-01-06 11:57 ` Jan-Hendrik Zab [this message]
2008-01-06 8:08 ` Alan McKinnon
2008-01-05 20:56 ` Erik
2008-01-05 23:02 ` reader
2008-01-06 8:19 ` Alan McKinnon
2008-01-05 17:06 ` [gentoo-user] " Alan McKinnon
2008-01-06 10:38 ` Florian Philipp
2008-01-06 23:15 ` [gentoo-user] " reader
2008-01-07 21:03 ` Florian Philipp
2008-01-08 0:49 ` reader
2008-01-05 19:00 ` [gentoo-user] " Dale
2008-01-06 13:12 ` Stroller
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