Arch Linux

chrispoole

Member

Registered: 2008-12-30

Posts: 121

[SOLVED] Speed increase with kernel compilation?

I'm planning on compiling my own kernel, to optimise as much as possible.

As a first step, I am planning on compiling the stock arch kernel from ABS, with the compiler flags for my CPU (core 2 duo), i686.

Am I likely to notice any kind of performance boost at all doing this, compared to what I assume is a standard compile to basic i686 instruction set in the arch repos?

Last edited by chrispoole (2009-04-08 17:13:07)

Misfit138

Misfit Emeritus

From: USA

Registered: 2006-11-27

Posts: 4,189

Re: [SOLVED] Speed increase with kernel compilation?

...Am I likely to notice any kind of performance boost at all doing this, compared to what I assume is a standard compile to basic i686 instruction set in the arch repos?

No...but there's no harm in ricing, so go for it.

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chrispoole

Member

Registered: 2008-12-30

Posts: 121

Re: [SOLVED] Speed increase with kernel compilation?

OK thanks.

To find out what modules I need to compile into the kernel, I just have to run lspci, lsusb and lsmod? (It's a core 2 duo laptop.)

broch

Banned

From: L.A. California

Registered: 2006-11-13

Posts: 975

Re: [SOLVED] Speed increase with kernel compilation?

no, this will tell you what hardware you have (needed anyway if you want custom kernel). building completely static kernel will not speed up anything, addind some things to the kernel instead of building modules may save you few seconds (no miracles though)

Last edited by broch (2009-04-08 12:43:27)

klixon

Member

From: Nederland

Registered: 2007-01-17

Posts: 525

Re: [SOLVED] Speed increase with kernel compilation?

How are you planning on applying those CFLAGS?

The kernel specifies it's own CFLAGS in some Makefile somewhere, so you'd have to hack that to make it work...
You'd need some kind of patchset to be able to use your own custom CFLAGS for a kernel compile if you don't want to grep/hack for it yourself.

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chrispoole

Member

Registered: 2008-12-30

Posts: 121

Re: [SOLVED] Speed increase with kernel compilation?

How are you planning on applying those CFLAGS?

I was naively thinking of the flags in makepkg.conf.

quetzyg

Member

From: /home/quetzyg

Registered: 2006-08-03

Posts: 129

Re: [SOLVED] Speed increase with kernel compilation?

OK thanks.

To find out what modules I need to compile into the kernel, I just have to run lspci, lsusb and lsmod? (It's a core 2 duo laptop.)

Just do:

lspci -k

to see what modules you need for every piece of hardware detected.

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RobertoVanto

Member

From: Chiampo(VI) - Italy

Registered: 2008-09-04

Posts: 32

Website

Re: [SOLVED] Speed increase with kernel compilation?

To find out what modules I need to compile into the kernel, I just have to run lspci, lsusb and lsmod?

http://kmuto.jp/debian/hcl/

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Xabre

Member

From: Serbia

Registered: 2009-03-19

Posts: 750

Re: [SOLVED] Speed increase with kernel compilation?

http://aur.archlinux.org/packages.php?ID=17373

chrispoole

Member

Registered: 2008-12-30

Posts: 121

Re: [SOLVED] Speed increase with kernel compilation?

Thanks guys.