Make 250 HZ a value that is not selected by default and give some better recommendations in help. Signed-off-by: Con Kolivas kernel/Kconfig.hz | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) Index: linux-2.6.22-rc4-ck1/kernel/Kconfig.hz =================================================================== --- linux-2.6.22-rc4-ck1.orig/kernel/Kconfig.hz 2007-06-10 21:59:57.000000000 +1000 +++ linux-2.6.22-rc4-ck1/kernel/Kconfig.hz 2007-06-10 21:59:58.000000000 +1000 @@ -13,8 +13,7 @@ choice contention and cacheline bounces as a result of timer interrupts. Note that the timer interrupt occurs on each processor in an SMP environment leading to NR_CPUS * HZ number of timer interrupts - per second. - + per second.Laptops may also show improved battery life. config HZ_100 bool "100 HZ" @@ -23,13 +22,14 @@ choice with lots of processors that may show reduced performance if too many timer interrupts are occurring. - config HZ_250 + config HZ_250_NODEFAULT bool "250 HZ" help - 250 Hz is a good compromise choice allowing server performance - while also showing good interactive responsiveness even - on SMP and NUMA systems. If you are going to be using NTSC video - or multimedia, selected 300Hz instead. + 250 HZ is a lousy compromise choice allowing server interactivity + while also showing desktop throughput and no extra power saving on + laptops. Good for when you can't make up your mind. + + Recommend 100 or 1000 instead. config HZ_300 bool "300 HZ" @@ -50,7 +50,7 @@ endchoice config HZ int default 100 if HZ_100 - default 250 if HZ_250 + default 250 if HZ_250_NODEFAULT default 300 if HZ_300 default 1000 if HZ_1000