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    Annotation of /trunk/kernel26-magellan/patches-2.6.21-r4/0021-2.6.21-hz-no_default_250.patch

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    Revision 222 - (hide annotations) (download)
    Tue Jun 12 08:03:28 2007 UTC (16 years, 11 months ago) by niro
    File size: 1729 byte(s) 
    files for 2.6.21-magellan-r4
    1 niro 222 Make 250 HZ a value that is not selected by default and give some better
    2     recommendations in help.
    3    
    4     Signed-off-by: Con Kolivas <kernel@kolivas.org>
    5    
    6     kernel/Kconfig.hz | 16 ++++++++--------
    7     1 file changed, 8 insertions(+), 8 deletions(-)
    8    
    9     Index: linux-2.6.21-ck2/kernel/Kconfig.hz
    10     ===================================================================
    11     --- linux-2.6.21-ck2.orig/kernel/Kconfig.hz 2007-05-14 19:49:57.000000000 +1000
    12     +++ linux-2.6.21-ck2/kernel/Kconfig.hz 2007-05-14 19:49:57.000000000 +1000
    13     @@ -13,8 +13,7 @@ choice
    14     contention and cacheline bounces as a result of timer interrupts.
    15     Note that the timer interrupt occurs on each processor in an SMP
    16     environment leading to NR_CPUS * HZ number of timer interrupts
    17     - per second.
    18     -
    19     + per second.Laptops may also show improved battery life.
    20    
    21     config HZ_100
    22     bool "100 HZ"
    23     @@ -23,13 +22,14 @@ choice
    24     with lots of processors that may show reduced performance if
    25     too many timer interrupts are occurring.
    26    
    27     - config HZ_250
    28     + config HZ_250_NODEFAULT
    29     bool "250 HZ"
    30     help
    31     - 250 Hz is a good compromise choice allowing server performance
    32     - while also showing good interactive responsiveness even
    33     - on SMP and NUMA systems. If you are going to be using NTSC video
    34     - or multimedia, selected 300Hz instead.
    35     + 250 HZ is a lousy compromise choice allowing server interactivity
    36     + while also showing desktop throughput and no extra power saving on
    37     + laptops. Good for when you can't make up your mind.
    38     +
    39     + Recommend 100 or 1000 instead.
    40    
    41     config HZ_300
    42     bool "300 HZ"
    43     @@ -50,7 +50,7 @@ endchoice
    44     config HZ
    45     int
    46     default 100 if HZ_100
    47     - default 250 if HZ_250
    48     + default 250 if HZ_250_NODEFAULT
    49     default 300 if HZ_300
    50     default 1000 if HZ_1000
    51