KernelDesktop

kernel-desktop specifications

Main goals:

create kernel for desktop computers, oriented to architectures used as desktops: ppc, x86, amd64 (there is no ia64 support)
not so loaded as main PLD kernel, no full grsec, no vserver
add patches improving latency and other tasks useful on desktops

Conditional Builds:

preemptrt (RT):
- realtime-preempt patch by Ingo Molar
  this patch contains many changes from -mm tree thus kernel using it may be very unstable or unusable

  ck (**CK**): 
  * Con Kolivas [[http://members.optusnet.com.au/ckolivas/kernel/|desktop patches]]\\ those patches are obsolete in current kernel versions.

  grsec_minimal (**GR**): 
  * grsecurity for ''/proc'': in PLD noone can live without grsecured ''/proc'', even on desktops ;-)

  laptop (**LAP**): 
  * simply changes HZ from default 1000 to 100, this should improve on-batery time, but decreases corectness of some programs using timer a lot (even 'time' in shells is not very reliable)\\ example: played some music with mplayer, time: <file>HZ=100:

real 32m24.907s user 0m4.420s sys 0m0.780s HZ=1000: real 32m25.936s user 0m22.736s sys 0m7.582s</file>

More patches:

Series 2.6.17

now on branch LINUX_2_6_17

<strong class=“highlight”><html></html></strong> Arch	Version	SMP	RT	CK	GR	LAP	BUILDS	TESTED

ppc	2.6.17.11	-	-	+	+	+	yes	<strong class=“highlight”><html></html></strong>ok, but (1)
ppc	2.6.17.11	-/+	+	+	+	-/+	yes	<strong class=“highlight”><html></html></strong>does not work (2)
ppc	2.6.17.14	-	-	+	+	+	yes	<strong class=“highlight”><html></html></strong>ok, but (1)
ppc	2.6.17.14	+	-	+	+	+	yes	<strong class=“highlight”><html></html></strong>no
ppc	2.6.17.14	-/+	+	+	+	-	yes	<strong class=“highlight”><html></html></strong>does not work (2)

x86	2.6.17.14	-/+	-	+	+	-/+	yes	<strong class=“highlight”><html></html></strong>no
x86	2.6.17.14	-/+	+	+	+	-/+	yes	<strong class=“highlight”><html></html></strong>no, but don't use

amd64	2.6.17.11	-	-	+	+	-	yes	<strong class=“highlight”><html></html></strong>ok (3)
amd64	2.6.17.11	-	+	+	+	-	yes	<strong class=“highlight”><html></html></strong>ok, but (4)
amd64	2.6.17.14	-/+	-	+	+	-	yes	<strong class=“highlight”><html></html></strong>no
amd64	2.6.17.14	-/+	+	+	+	-	yes	<strong class=“highlight”><html></html></strong>no

iBook G4: 1.3GHz, 768MB RAM, Radeon Mobility 9200
- - suspend2 (suspend to disk) does not work
- - fails to detect lpj/bogomips correctly, adding lpj=3333333 helps
- + no problems with suspend to ram
- + AirPort II works well (bcm43xx)
- + fbsplash works
- + swap prefetch (CK-patch part) works

  iBook G4: 1.3GHz, 768MB RAM, Radeon Mobility 9200 
  * - FATAL: no hardware is working because of problems with genirq

  Athlon64 2GHz, 1GB RAM, some NVidia board, NVidia Ge''''Force 2 MX 200 
  * * suspend2 works, but there are issues with clock after resuming 
  * + ext3 cache works fine

  Athlon64 2GHz, 1GB RAM, some NVidia board, NVidia Ge''''Force 2 MX 200 
  * + did not have problems with genirq, unlike on other archs/computers 
  * - sometimes is was locking in kernel-mode for a long time (5 seconds)

Series 2.6.18

<strong class=“highlight”><html></html></strong> Arch	Version	SMP	RT	CK	GR	LAP	BUILDS	TESTED

*	2.6.18.2	*	+	+	*	*	there is no ck-patch for rt

ppc	2.6.18.2	-/+	-	+	-	-/+	yes	<strong class=“highlight”><html></html></strong>no
ppc	2.6.18.2	-	-	+	+	+	yes	<strong class=“highlight”><html></html></strong>no
ppc	2.6.18.3	-	-	+	+	-	yes	<strong class=“highlight”><html></html></strong>works (2)
ppc	2.6.18.2	+	-	+	+	-	yes	<strong class=“highlight”><html></html></strong>works (3)
ppc	2.6.18.2	-/+	+	-	+	-	yes	<strong class=“highlight”><html></html></strong>fails to boot (1)

x86	2.6.18.2	-/+	-	+	-/+	-	yes	<strong class=“highlight”><html></html></strong>no
x86	2.6.18.2	-/+	+	-	-/+	-	yes	<strong class=“highlight”><html></html></strong>no

amd64	2.6.18.2	-/+	-	+	-	-	yes	<strong class=“highlight”><html></html></strong>no
amd64	2.6.18.2	-/+	+	-	+	-	yes	<strong class=“highlight”><html></html></strong>no

iBook G4: 1.3GHz, 768MB RAM, Radeon Mobility 9200
- - does not even leave OpenFirmware console

  iBook G4: 1.3GHz, 768MB RAM, Radeon Mobility 9200 
  * - fails to detect lpj/bogomips correctly, adding lpj=333333 helps\\NOTE: this lpj is different than in 2.6.17, depends on HZ ? 
  * + suspend2 (2.2.9) works, no more problems with X 
  * + no problems with suspend to ram 
  * + Air''''Port II works well (bcm43xx)

  iBook G4: 1.3GHz, 768MB RAM, Radeon Mobility 9200 
  * - fails to detect lpj/bogomips correctly 
  * ? no further tests

Series 2.6.19

Not started. CK patch is missing.

Tips

If you are using CK patch check the page to get some info about it. Then install schedtool and start using schedtool -I !
If you own Macintosh PowerPC computer try adding noisapnp and i8042.nopnp to kernel cmdline to suppress some ugly warnings about non-existing device.

CategoryUpdateNeeded

Table of Contents

KernelDesktop

kernel-desktop specifications

Main goals:

Conditional Builds:

Series 2.6.17

Series 2.6.18

Series 2.6.19

Tips