LinuxQuestions.org
Latest LQ Deal: Latest LQ Deals
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Slackware
User Name
Password
Slackware This Forum is for the discussion of Slackware Linux.

Notices


Reply
  Search this Thread
Old 04-13-2009, 04:10 AM   #1
metrofox
Member
 
Registered: Jan 2009
Location: Palermo, Italy
Distribution: Slackware
Posts: 236

Rep: Reputation: 37
generic or huge kernels?


For first...I'm not making this topic to flame, I'm making this topic because I've seen many topics where people flamed to choose these kernels, now...Which kernel is most used between *generic and *huge? For first I give my personal opinion:

Actually I use the generic kernel for two reasons:

-Pat suggests it.
-It's slim.

but I've always used the huge kernel. Now, in the using of the generic kernel I had to type one command to make the "initrd.gz" and I had to edit the lilo.conf(the guide is wrote in the /boot/README.initrd). No,w it works perfectly. Now the question is:

"Which kernel do you use"? "Why do you use it?"
 
Old 04-13-2009, 04:17 AM   #2
GazL
LQ Veteran
 
Registered: May 2008
Posts: 6,895

Rep: Reputation: 5014Reputation: 5014Reputation: 5014Reputation: 5014Reputation: 5014Reputation: 5014Reputation: 5014Reputation: 5014Reputation: 5014Reputation: 5014Reputation: 5014
I use the generic. I was under the impression the 'huge' kernel was only intended as a bootstrap kernel and isn't recommended for normal use.
 
Old 04-13-2009, 04:21 AM   #3
apmount
Member
 
Registered: Mar 2009
Location: Athens
Distribution: Slackware
Posts: 98

Rep: Reputation: 16
Hi,

I thought the suggestion was to use hugesmp kernel. This is the one I use.
In the begginning, when I first installed slackware, I used the generic kernel...by accident. I am using the GRUB from another distro to boot the various OSes so I added an entry there for slackware and since I did not know at the beggining which kernel to use I just picked up generic. But then I think I read somewhere that it is the hugesmp that is recommended so I changed it. Nevertheless I am not noticing any difference till now, or the use I am making of my system does not reveal any difference.

Last edited by apmount; 04-13-2009 at 04:22 AM.
 
Old 04-13-2009, 04:21 AM   #4
mRgOBLIN
Slackware Contributor
 
Registered: Jun 2002
Location: New Zealand
Distribution: Slackware
Posts: 999

Rep: Reputation: 231Reputation: 231Reputation: 231
Quote:
Originally Posted by GazL View Post
I use the generic. I was under the impression the 'huge' kernel was only intended as a bootstrap kernel and isn't recommended for normal use.
You are correct sir
 
Old 04-13-2009, 06:16 AM   #5
samac
Senior Member
 
Registered: Mar 2004
Location: Kirkwall, Orkney
Distribution: Linux Mint 20.3 - Cinnamon
Posts: 1,425

Rep: Reputation: 139Reputation: 139
mRgOBLIN

Quote:
You are correct sir
As a Slackware contributor, perhaps you could explain why you should not use the hugesmp kernel as, after all is said and done, it does work on a day to day basis.

samac
 
Old 04-13-2009, 06:48 AM   #6
niels.horn
Senior Member
 
Registered: Mar 2007
Location: Rio de Janeiro - Brazil
Distribution: Slackware64-current
Posts: 1,004

Rep: Reputation: 91
I compile my own kernel, based on the config from the generic-smp kernel supplied by Slackware.
I build in some modules so I don't need an 'initrd' and change some parameters needed for my hardware.

But basically it is the generic kernel with some fine-tuning in the configuration.
 
Old 04-13-2009, 07:23 AM   #7
onebuck
Moderator
 
Registered: Jan 2005
Location: Central Florida 20 minutes from Disney World
Distribution: SlackwareŽ
Posts: 13,923
Blog Entries: 44

Rep: Reputation: 3158Reputation: 3158Reputation: 3158Reputation: 3158Reputation: 3158Reputation: 3158Reputation: 3158Reputation: 3158Reputation: 3158Reputation: 3158Reputation: 3158
Hi,

I prefer to use 'PV's' definition;

Quote:
excerpt from CHANGES_AND_HINTS.TXT;
As stated earlier, it is recommended that you use one of the generic kernels
rather than the huge kernels; the huge kernels are primarily intended as
"installer" and "emergency" kernels
in case you forget to make an initrd.
For most systems, you should use the generic SMP kernel if it will run,
even if your system is not SMP-capable. Some newer hardware needs the
local APIC enabled in the SMP kernel, and theoretically there should not be
a performance penalty with using the SMP-capable kernel on a uniprocessor
machine, as the SMP kernel tests for this and makes necessary adjustments.
Furthermore, the kernel sources shipped with Slackware are configured for
SMP usage, so you won't have to modify those to build external modules
(such as NVidia or ATI proprietary drivers) if you use the SMP kernel.

If you decide to use one of the non-SMP kernels, you will need to follow the
instructions in /extra/linux-2.6.27.7-nosmp-sdk/README.TXT to modify your
kernel sources for non-SMP usage. Note that this only applies if you are
using the Slackware-provided non-SMP kernel - if you build a custom kernel,
the symlinks at /lib/modules/$(uname -r)/{build,source} will point to the
correct kernel source so long as you don't (re)move it.
To date I have not had any issues that would require the use of the installer kernels other than as a recovery kernel with the install cd.
 
Old 04-13-2009, 08:56 AM   #8
brianL
LQ 5k Club
 
Registered: Jan 2006
Location: Oldham, Lancs, England
Distribution: Slackware64 15; SlackwareARM-current (aarch64); Debian 12
Posts: 8,297
Blog Entries: 61

Rep: Reputation: Disabled
Generic, because I sometimes do as I am told.
 
Old 04-13-2009, 10:08 AM   #9
TSquaredF
Member
 
Registered: Dec 2005
Location: "The South Coast of Texas"
Distribution: Slackware64-current
Posts: 564

Rep: Reputation: Disabled
I used to compile my own kernels, but have started using the stock kernels instead. It is just too easy to copy a kernel from one machine to another, without worrying about how it was customized. I'm currently using four machines on this network & have the same kernels on all four. I have both huge & generic kernels installed (in case I need to boot from the huge one after one of my "mistakes"), have gotten rid of the "vmlinuz" link & use "huge" & "generic" links instead. So, I don't have to remember the exact kernel name. It's easy enough to modify the stock generic kernel to contain your filesystem drivers, so that an initrd will not be necessary, but I have modified the mkinitrd package so that I can boot with "root=LABEL=whatever" or "root=UUID=whatever" & that requires an initrd anyway, so I just leave the kernel alone.
Regards,
Bill
 
Old 04-13-2009, 12:35 PM   #10
niels.horn
Senior Member
 
Registered: Mar 2007
Location: Rio de Janeiro - Brazil
Distribution: Slackware64-current
Posts: 1,004

Rep: Reputation: 91
I leave the "vmlinuz" link alone, as it always comes back after an update of the kernel from -current or a new release.

The generic and -custom (compiled kernel) I add to the lilo menu, with the -custom as a default. The huge kernel stays there, in case I mess up something, so I don't need to find a bootable CD.
 
Old 04-13-2009, 01:58 PM   #11
bgeddy
Senior Member
 
Registered: Sep 2006
Location: Liverpool - England
Distribution: slackware64 13.37 and -current, Dragonfly BSD
Posts: 1,810

Rep: Reputation: 232Reputation: 232Reputation: 232
As others have said - I always use generic because the Slackware creator says to - never had any problems.

Again - always leave a boot option for hugesmp.s in case of problems creating initrd or whatever.
 
Old 04-13-2009, 03:51 PM   #12
brianL
LQ 5k Club
 
Registered: Jan 2006
Location: Oldham, Lancs, England
Distribution: Slackware64 15; SlackwareARM-current (aarch64); Debian 12
Posts: 8,297
Blog Entries: 61

Rep: Reputation: Disabled
Quote:
Originally Posted by bgeddy View Post
Always leave a boot option for hugesmp.s in case of problems creating initrd or whatever.
Yes, once you're sure everything works OK. Like this:
Code:
# Linux bootable partition config begins
image = /boot/vmlinuz-generic-smp-2.6.27.7-smp
  initrd = /boot/initrd.gz
  root = /dev/sda1
  label = Linux_G
  read-only
# Linux bootable partition config ends
# Linux bootable partition config begins
image = /boot/vmlinuz
  root = /dev/sda1
  label = Linux_H
  read-only
# Linux bootable partition config ends

Last edited by brianL; 04-13-2009 at 03:53 PM.
 
Old 04-13-2009, 04:17 PM   #13
samac
Senior Member
 
Registered: Mar 2004
Location: Kirkwall, Orkney
Distribution: Linux Mint 20.3 - Cinnamon
Posts: 1,425

Rep: Reputation: 139Reputation: 139
I'm still at a loss. PV says that we should use the generic kernel, but it seems that we have to take this on faith, why should we not use the hugesmp.s kernel?

Just to clarify, I am using the generic kernel, I would just like to know for curiosities sake.

samac
 
Old 04-13-2009, 04:32 PM   #14
niels.horn
Senior Member
 
Registered: Mar 2007
Location: Rio de Janeiro - Brazil
Distribution: Slackware64-current
Posts: 1,004

Rep: Reputation: 91
One reason I can think of: troubleshooting.

The huge kernel loads about everything in memory - many things you'll never use. If anything goes wrong (panic, oops), it will be (more) difficult to say why.
 
Old 04-13-2009, 04:58 PM   #15
bgeddy
Senior Member
 
Registered: Sep 2006
Location: Liverpool - England
Distribution: slackware64 13.37 and -current, Dragonfly BSD
Posts: 1,810

Rep: Reputation: 232Reputation: 232Reputation: 232
Yes - to me it makes more sense to load modules as and when needed,(in theory), rather than have the world built into and loaded from one monolithic kernel. The monolithic may be beneficial to get the majority of machines going but unnecessary for daily use.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
Generic vs Huge kernel in Slack 12 techyranger Slackware 4 01-23-2008 01:30 PM
slack 12, switch to generic kernel from huge kernel, using grub? jaguarrh Slackware 8 09-19-2007 06:29 AM
GART TLB error generic level generic Clydesdale Linux - Software 1 08-13-2007 06:47 PM
GART TLB error generic level generic Clydesdale Linux - Hardware 0 08-13-2007 06:18 PM
Switch from huge-smp-2.6.21.5 to generic-2.6.21.5 tronayne Slackware 1 07-30-2007 08:34 AM

LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Slackware

All times are GMT -5. The time now is 08:46 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration