Difference between revisions of "Linux-pf"
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[http://pf.natalenko.name/ Linux-pf] is a kernel package based on the stock -ARCH kernel, patched with a row of significant patches: | [http://pf.natalenko.name/ Linux-pf] is a kernel package based on the stock -ARCH kernel, patched with a row of significant patches: | ||
* [http://ck-hack.blogspot.com/ The latest Con Kolivas' -ck patchset, including BFS] | * [http://ck-hack.blogspot.com/ The latest Con Kolivas' -ck patchset, including BFS] | ||
* [[TuxOnIce]] | * [[TuxOnIce]] | ||
− | * [http://algo.ing.unimo.it/people/paolo/disk_sched/ BFQ (as default I/O scheduler)] | + | * [http://algo.ing.unimo.it/people/paolo/disk_sched/ BFQ] (as default I/O scheduler) |
+ | * [http://kerneldedup.org/projects/uksm/ UKSM] | ||
* [http://aufs.sourceforge.net/ AUFS3] | * [http://aufs.sourceforge.net/ AUFS3] | ||
− | |||
− | |||
− | The reference PKGBUILD can be found at the | + | == Installation == |
+ | |||
+ | The reference PKGBUILD can be found at the {{AUR|linux-pf}} and at the [https://bitbucket.org/nous/linux-pf bitbucket.org mercurial repository]. | ||
+ | |||
+ | === From the unofficial repository (recommended) === | ||
+ | |||
+ | Precompiled packages, generic and CPU-family optimized are uploaded at the [http://dl.dropbox.com/u/11734958/index.html pfkernel unofficial repository], usually within 6 hours of the AUR update for x86_64 and 12 hours for i686. Append the following to {{ic|/etc/pacman.conf}} to activate the pfkernel repo: | ||
:{{bc|<nowiki> | :{{bc|<nowiki> | ||
[pfkernel] | [pfkernel] | ||
Line 37: | Line 20: | ||
Server = http://dl.dropbox.com/u/11734958/$arch | Server = http://dl.dropbox.com/u/11734958/$arch | ||
</nowiki>}} | </nowiki>}} | ||
− | Running | + | Running {{ic|$ pacman -Syyl pfkernel}} will update all repos and show the available packages from pfkernel. Afterwards, just install {{Pkg|linux-pf}} {{Pkg|linux-pf-headers}}, but additional configuration steps must be performed; see the [[#Installation|Installation]] section. |
+ | |||
+ | === Manual compilation === | ||
− | |||
There's a number of options a user is asked to choose from, should he/she select to compile from the PKGBUILD: | There's a number of options a user is asked to choose from, should he/she select to compile from the PKGBUILD: | ||
− | + | {{bc|<nowiki> | |
==> Hit <Y> to use your running kernel's config | ==> Hit <Y> to use your running kernel's config | ||
(needs IKCONFIG and IKCONFIG_PROC) | (needs IKCONFIG and IKCONFIG_PROC) | ||
Line 51: | Line 35: | ||
The <L> option tries some kind of autodetection of the user's hardware: it first tries to use the [[modprobed_db]] module database, then falls back to the linux kernel's '''''make localmodconfig''''' functionality. The last option is self-explanatory. | The <L> option tries some kind of autodetection of the user's hardware: it first tries to use the [[modprobed_db]] module database, then falls back to the linux kernel's '''''make localmodconfig''''' functionality. The last option is self-explanatory. | ||
− | + | {{bc|<nowiki> | |
==> Kernel configuration options before build: | ==> Kernel configuration options before build: | ||
<M> make menuconfig (console menu) | <M> make menuconfig (console menu) | ||
Line 62: | Line 46: | ||
Choose one of these to use your favourite user interface for configuring the kernel. Note that the last option might still prompt with unresolved/new configuration options, if you have selected <Y> or <L> in the previous step. | Choose one of these to use your favourite user interface for configuring the kernel. Note that the last option might still prompt with unresolved/new configuration options, if you have selected <Y> or <L> in the previous step. | ||
− | + | {{bc|<nowiki> | |
==> An non-generic CPU was selected for this kernel. | ==> An non-generic CPU was selected for this kernel. | ||
==> Hit <G> : to create a generic package named linux-pf | ==> Hit <G> : to create a generic package named linux-pf | ||
Line 72: | Line 56: | ||
If you have selected a specific CPU optimization for your kernel in the previous step, the default action is to append the CPU to the package name. This way, a subsequent package update from the repository will pull the optimized package and not the generic one. This also will help better compatibility with 3rd party precompiled modules (e.g. nvidia-pf), which might break things if loaded on optimized linux-pf kernels. | If you have selected a specific CPU optimization for your kernel in the previous step, the default action is to append the CPU to the package name. This way, a subsequent package update from the repository will pull the optimized package and not the generic one. This also will help better compatibility with 3rd party precompiled modules (e.g. nvidia-pf), which might break things if loaded on optimized linux-pf kernels. | ||
− | == | + | ==== Install compiled package ==== |
+ | |||
After the compilation finishes, an additional ''linux-pf-headers[-cpu]'' package will be created. Don't forget to install it too, if you plan on using additional modules like [[nvidia]] or [[virtualbox]]. | After the compilation finishes, an additional ''linux-pf-headers[-cpu]'' package will be created. Don't forget to install it too, if you plan on using additional modules like [[nvidia]] or [[virtualbox]]. | ||
− | + | ||
− | + | # pacman -U linux-pf-core2-3.3.2-1-$CPUTYPE.pkg.tar.xz linux-pf-headers-core2-3.3.2-1-$CPUTYPE.pkg.tar.xz | |
− | + | ||
During the kernel installation, [[mkinitcpio]] will be called by the install script to recreate the initramfs. | During the kernel installation, [[mkinitcpio]] will be called by the install script to recreate the initramfs. | ||
{{Note|If you make any changes to {{ic|/etc/mkinitcpio.conf}} after the installation, you must run '''''mkinitcpio -p linux-pf''''' to have the initial ramdisk recreated.}} | {{Note|If you make any changes to {{ic|/etc/mkinitcpio.conf}} after the installation, you must run '''''mkinitcpio -p linux-pf''''' to have the initial ramdisk recreated.}} | ||
− | Then, you need to add a boot entry in | + | == Configuration == |
+ | |||
+ | Then, you need to add a boot entry in [[Boot Loader#Configuration files|boot loader configuration file]] which points to linux-pf (the following example is from one of the maintainer's boxes): | ||
{{bc|<nowiki> | {{bc|<nowiki> | ||
title Linux-pf 3.2 | title Linux-pf 3.2 | ||
Line 91: | Line 78: | ||
{{bc|<nowiki> | {{bc|<nowiki> | ||
MODULES="... lzo tuxonice_compress tuxonice_swap tuxonice_userui ..." | MODULES="... lzo tuxonice_compress tuxonice_swap tuxonice_userui ..." | ||
− | HOOKS="... | + | HOOKS="... block userui resume filesystems ..." |
</nowiki>}} | </nowiki>}} | ||
In the example above, TuxOnIce is setup to use a swap partition as the suspended image allocator. The ''resume'' hook must be placed before ''filesystems''. Also, a progress indicator is requested with ''userui''. Please read the [[TuxOnIce]] wiki page for more detailed information. | In the example above, TuxOnIce is setup to use a swap partition as the suspended image allocator. The ''resume'' hook must be placed before ''filesystems''. Also, a progress indicator is requested with ''userui''. Please read the [[TuxOnIce]] wiki page for more detailed information. | ||
Line 97: | Line 84: | ||
Last, you must choose whether you want to suspend using [[pm-utils]] or the [[Suspending_to_Disk_with_hibernate-script#Tuxonice_method|hibernate-script]]. Please, refer to the respective wiki pages for more details. [[TuxOnIce]] offers the option for a text mode or an even nicer [[fbsplash|framebuffer splash]] progress indicator. | Last, you must choose whether you want to suspend using [[pm-utils]] or the [[Suspending_to_Disk_with_hibernate-script#Tuxonice_method|hibernate-script]]. Please, refer to the respective wiki pages for more details. [[TuxOnIce]] offers the option for a text mode or an even nicer [[fbsplash|framebuffer splash]] progress indicator. | ||
− | + | == Tips and tricks == | |
− | + | * If you notice disk-related performance problems or occational hickups, it might be an I/O scheduler issue. Try a different one than the linux-pf default (BFQ) by echoing to {{ic|/sys/block/sda/queue/scheduler}} ''cfq'', ''noop'' or ''deadline'': {{ic|# echo noop >| /sys/block/sda/queue/scheduler}}. Note, the aforementioned command only sets the I/O scheduler for the 1st hard drive and additional ''echoes'' will be needed if you have more. If the situation improves, then append "''elevator''='''''cfq'''''" (or '''''noop''''' or '''''deadline''''') to the linux-pf command line in {{ic|/boot/grub/menu.lst}}, to make the change permanent. | |
− | * If you notice disk-related performance problems or occational hickups, it might be an I/O scheduler issue. Try a different one than the linux-pf default (BFQ) by echoing to {{ic|/sys/block/sda/queue/scheduler}} ''cfq'', ''noop'' or ''deadline'': | ||
* For people who build their own tailored kernels and compilation aborts with with an error about "missing include/config/dvb/*.h files", setting <M> at ''DVB for Linux'' at ''Device Drivers/Multimedia support'' and leaving everything else out, creates just the necessary dvb.h, which allows the compilation to continue. | * For people who build their own tailored kernels and compilation aborts with with an error about "missing include/config/dvb/*.h files", setting <M> at ''DVB for Linux'' at ''Device Drivers/Multimedia support'' and leaving everything else out, creates just the necessary dvb.h, which allows the compilation to continue. | ||
== Forum thread for linux-pf == | == Forum thread for linux-pf == | ||
+ | |||
There's a [https://bbs.archlinux.org/viewtopic.php?id=103462 discussion thread] at the BBS for reporting errors, impressions, ideas and requests. | There's a [https://bbs.archlinux.org/viewtopic.php?id=103462 discussion thread] at the BBS for reporting errors, impressions, ideas and requests. | ||
+ | |||
+ | == See also == | ||
+ | |||
+ | * [https://bitbucket.org/nous/linux-pf/ linux-pf mercurial repository] | ||
+ | * [http://pf.natalenko.name/ Patchset homepage] | ||
+ | * [http://pf.natalenko.name/forum Patchset community forum] | ||
+ | * [http://freecode.com/projects/pf-kernel Patchset changelog] |
Revision as of 18:51, 15 September 2013
Linux-pf is a kernel package based on the stock -ARCH kernel, patched with a row of significant patches:
- The latest Con Kolivas' -ck patchset, including BFS
- TuxOnIce
- BFQ (as default I/O scheduler)
- UKSM
- AUFS3
Contents
Installation
The reference PKGBUILD can be found at the linux-pfAUR and at the bitbucket.org mercurial repository.
From the unofficial repository (recommended)
Precompiled packages, generic and CPU-family optimized are uploaded at the pfkernel unofficial repository, usually within 6 hours of the AUR update for x86_64 and 12 hours for i686. Append the following to /etc/pacman.conf
to activate the pfkernel repo:
[pfkernel] # Generic and optimized binaries of the ARCH kernel patched with BFS, TuxOnIce, BFQ, IMQ, Aufs3 # linux-pf, kernel26-pf, gdm-old, nvidia-pf, nvidia-96xx, xchat-greek, arora-git Server = http://dl.dropbox.com/u/11734958/$arch
Running $ pacman -Syyl pfkernel
will update all repos and show the available packages from pfkernel. Afterwards, just install linux-pf linux-pf-headers, but additional configuration steps must be performed; see the Installation section.
Manual compilation
There's a number of options a user is asked to choose from, should he/she select to compile from the PKGBUILD:
==> Hit <Y> to use your running kernel's config (needs IKCONFIG and IKCONFIG_PROC) ==> Hit <L> to run 'make localmodconfig' ==> Hit <N> (or just <ENTER>) to build an all-inclusive kernel like stock -ARCH (warning: it can take a looong time)
The <Y> option is for users who have already compiled and are running a custom kernel. The PKGBUILD reads the running kernel's configuration and uses it for the subsequent compilation. The <L> option tries some kind of autodetection of the user's hardware: it first tries to use the modprobed_db module database, then falls back to the linux kernel's make localmodconfig functionality. The last option is self-explanatory.
==> Kernel configuration options before build: <M> make menuconfig (console menu) <N> make nconfig (newer alternative to menuconfig) <G> make gconfig (needs gtk) <X> make xconfig (needs qt) <O> make oldconfig <ENTER> to skip configuration and start compiling
Choose one of these to use your favourite user interface for configuring the kernel. Note that the last option might still prompt with unresolved/new configuration options, if you have selected <Y> or <L> in the previous step.
==> An non-generic CPU was selected for this kernel. ==> Hit <G> : to create a generic package named linux-pf ==> Hit <ENTER> : to create a package named after the selected CPU (e.g. linux-pf-core2 - recommended) ==> This option affects ONLY the package name. Whether or not the ==> kernel is optimized was determined at the previous config step.
If you have selected a specific CPU optimization for your kernel in the previous step, the default action is to append the CPU to the package name. This way, a subsequent package update from the repository will pull the optimized package and not the generic one. This also will help better compatibility with 3rd party precompiled modules (e.g. nvidia-pf), which might break things if loaded on optimized linux-pf kernels.
Install compiled package
After the compilation finishes, an additional linux-pf-headers[-cpu] package will be created. Don't forget to install it too, if you plan on using additional modules like nvidia or virtualbox.
# pacman -U linux-pf-core2-3.3.2-1-$CPUTYPE.pkg.tar.xz linux-pf-headers-core2-3.3.2-1-$CPUTYPE.pkg.tar.xz
During the kernel installation, mkinitcpio will be called by the install script to recreate the initramfs.
/etc/mkinitcpio.conf
after the installation, you must run mkinitcpio -p linux-pf to have the initial ramdisk recreated.Configuration
Then, you need to add a boot entry in boot loader configuration file which points to linux-pf (the following example is from one of the maintainer's boxes):
title Linux-pf 3.2 root (hd0,4) kernel (hd0,0)/vmlinuz-linux-pf root=/dev/disk/by-label/ROOT ro vga=0x318 lapic resume=/dev/disk/by-label/SWAP video=vesafb:ywrap,mtrr:3 fastboot quiet initrd (hd0,0)/initramfs-linux-pf.img
If you intend to use TuxOnIce for hibernation, make sure you have added the necessary modules to the MODULES array of /etc/mkinitcpio.conf
and at least the resume hook to the HOOKS array:
MODULES="... lzo tuxonice_compress tuxonice_swap tuxonice_userui ..." HOOKS="... block userui resume filesystems ..."
In the example above, TuxOnIce is setup to use a swap partition as the suspended image allocator. The resume hook must be placed before filesystems. Also, a progress indicator is requested with userui. Please read the TuxOnIce wiki page for more detailed information.
Last, you must choose whether you want to suspend using pm-utils or the hibernate-script. Please, refer to the respective wiki pages for more details. TuxOnIce offers the option for a text mode or an even nicer framebuffer splash progress indicator.
Tips and tricks
- If you notice disk-related performance problems or occational hickups, it might be an I/O scheduler issue. Try a different one than the linux-pf default (BFQ) by echoing to
/sys/block/sda/queue/scheduler
cfq, noop or deadline:# echo noop >
. Note, the aforementioned command only sets the I/O scheduler for the 1st hard drive and additional echoes will be needed if you have more. If the situation improves, then append "elevator=cfq" (or noop or deadline) to the linux-pf command line in/boot/grub/menu.lst
, to make the change permanent. - For people who build their own tailored kernels and compilation aborts with with an error about "missing include/config/dvb/*.h files", setting <M> at DVB for Linux at Device Drivers/Multimedia support and leaving everything else out, creates just the necessary dvb.h, which allows the compilation to continue.
Forum thread for linux-pf
There's a discussion thread at the BBS for reporting errors, impressions, ideas and requests.