Gentoo Archives: gentoo-user

From: Bastian Balthazar Bux <BastianBalthazarBux@×××××××××.it>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] kernel tuning
Date: Mon, 03 Oct 2005 20:16:24
In Reply to: Re: [gentoo-user] kernel tuning by John Jolet
1 John Jolet wrote:
2 > On Saturday 01 October 2005 14:59, gentuxx wrote:
3 >
4 >
5 >>>- Mark Shields
6 >>
7 >>IIRC, RedHat kernels are relatively generic in that they have almost
8 >>everything turned on, and/or build the modules so that they can
9 >>maximize the hardware compatibility. So it is likely that there will
10 >>be tones of stuff that was turned on, or had modules build for it,
11 >>that you didn't need. The same will likely be the case for the gentoo
12 >>kernel. You're best bet is to spend the time on one system going
13 >>through each kernel option (within reason), if you don't know what it
14 >>does, read the help and/or turn it off (it will give a recommended
15 >>setting in the Help). Once you've got your config, use that to build
16 >>the kernels for the rest fo your systems.
17 >>
18 >>I know it's a lot of work, but once you've done it, subsequent
19 >>configs/compiles for kernel upgrades, security patches, etc. will go
20 >>MUCH faster. 1) Because you'll have a pre-defined kernel config. 2)
21 >>You'll know what most of the kernel options are (at least
22 >>superficially) and which ones you need enabled. You'll just have to
23 >>read the help for any new ones that pop up. ;-)
24 >>
25 >>HTH
26 >>
27 >
28 > I've done all that, in terms of drivers/features turned on/off/modules. I
29 > meant more in terms of things like threads per process, processes per user
30 > (ulimit and friends), max data stack, that sort of thing.
32 For that take a look at
34 section "Tips and Tricks"
36 The "sys-kernel/hardened-sources" give some more flexibility but the
37 fact is not so widely used, as (on amd64) the vanilla ones has to be
38 considered.
40 Also setting ulimit and sysctl apply to every linux system not only
41 gentoo and should be always checked, also if you trust that the distro
42 you are using is optimized to be used as server.
44 Also to consider:
45 CONFIG_HZ=100
49 HTHToo
50 --
51 gentoo-user@g.o mailing list


Subject Author
Re: [gentoo-user] kernel tuning "Brett I. Holcomb" <brettholcomb@×××××××××.net>