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Anton Blanchard 030bdc3fd0 powerpc/defconfigs: Set HZ=100 on pseries and ppc64 defconfigs 
Now we have high res timers there is less of a reason for a high HZ value.
Furthermore I think there a few reasons we should reduce HZ to 100:

- Timer interrupt overhead. While this overhead is small, there are
  applications that are very sensitive to jitter (eg some HPC apps).

- Issues with the timer wheel code. When coming out of NO_HZ idle we work our
  way through the timer code one tick at a time.  If we have been idle a long
  time, this adds up - I sometimes see milliseconds of time spent in that
  loop.

  Long term we should fix the timer wheel algorithm, but for now if we reduce
  HZ then we reduce the amount of work the timer code has to do when coming
  out of idle.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
 		2009-12-18 14:54:26 +11:00
..
40x powerpc/40x: Update kilauea defconfig to support NAND, RTC and HWMON 2009-08-20 10:25:52 +10:00
44x powerpc/44x: Add Eiger AMCC (AppliedMicro) PPC460SX evaluation board support. 2009-08-31 08:24:15 -04:00
52xx powerpc/5200: Update defconfigs 2009-10-15 10:40:47 -06:00
83xx powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
85xx powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
86xx powerpc/86xx: Support for NVRAM on GE Fanuc's PPC9A 2009-11-20 16:45:37 -06:00
adder875_defconfig powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
amigaone_defconfig powerpc/amigaone: Default config for AmigaOne boards 2009-02-11 16:00:10 +11:00
c2k_defconfig powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
cell_defconfig eeprom: More consistent symbol names 2009-01-26 21:19:57 +01:00
celleb_defconfig eeprom: More consistent symbol names 2009-01-26 21:19:57 +01:00
chrp32_defconfig eeprom: More consistent symbol names 2009-01-26 21:19:57 +01:00
ep88xc_defconfig powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
ep8248e_defconfig powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
g5_defconfig powerpc/defconfigs: Disable token ring in powerpc defconfigs 2009-12-18 14:54:25 +11:00
gamecube_defconfig powerpc: gamecube: default config 2009-12-12 22:24:28 -07:00
holly_defconfig [POWERPC] Update defconfigs 2007-12-06 16:54:02 +11:00
iseries_defconfig powerpc/defconfigs: Disable token ring in powerpc defconfigs 2009-12-18 14:54:25 +11:00
linkstation_defconfig powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
maple_defconfig eeprom: More consistent symbol names 2009-01-26 21:19:57 +01:00
mgcoge_defconfig powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
mgsuvd_defconfig powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
mpc83xx_defconfig powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
mpc85xx_defconfig powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
mpc85xx_smp_defconfig powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
mpc86xx_defconfig powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
mpc866_ads_defconfig powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
mpc885_ads_defconfig powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
mpc5200_defconfig powerpc/5200: Update defconfigs 2009-10-15 10:40:47 -06:00
mpc7448_hpc2_defconfig powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
mpc8272_ads_defconfig powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
pasemi_defconfig powerpc: pasemi_defconfig update 2009-11-11 15:44:02 +11:00
pmac32_defconfig powerpc/pmac: Update PowerMac 32-bit defconfig 2009-06-02 11:12:35 +10:00
ppc6xx_defconfig i2c/chips: Move max6875 to drivers/misc/eeprom 2009-06-15 18:01:49 +02:00
ppc40x_defconfig Merge commit 'jwb/jwb-merge' into merge 2009-01-28 17:15:34 +11:00
ppc44x_defconfig Merge commit 'jwb/jwb-merge' into merge 2009-01-28 17:15:34 +11:00
ppc64_defconfig powerpc/defconfigs: Set HZ=100 on pseries and ppc64 defconfigs 2009-12-18 14:54:26 +11:00
ppc64e_defconfig powerpc/defconfigs: Disable token ring in powerpc defconfigs 2009-12-18 14:54:25 +11:00
pq2fads_defconfig powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
prpmc2800_defconfig powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
ps3_defconfig powerpc/ps3: Update ps3_defconfig 2009-08-27 13:27:59 +10:00
pseries_defconfig powerpc/defconfigs: Set HZ=100 on pseries and ppc64 defconfigs 2009-12-18 14:54:26 +11:00
storcenter_defconfig powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx 2009-11-05 08:26:38 -06:00
wii_defconfig powerpc: wii: default config 2009-12-12 22:24:30 -07:00