Contents of /trunk/kernel26-magellan/patches-2.6.17-r6/0015-2.6.17-hz-no_default_250.patch
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Sun Mar 11 16:17:56 2007 UTC (17 years, 6 months ago) by niro
File size: 1440 byte(s)
Sun Mar 11 16:17:56 2007 UTC (17 years, 6 months ago) by niro
File size: 1440 byte(s)
2.6.17-magellan-r6
1 | 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 | 15 +++++++++------ |
7 | 1 files changed, 9 insertions(+), 6 deletions(-) |
8 | |
9 | Index: linux-ck-dev/kernel/Kconfig.hz |
10 | =================================================================== |
11 | --- linux-ck-dev.orig/kernel/Kconfig.hz 2006-06-18 15:23:58.000000000 +1000 |
12 | +++ linux-ck-dev/kernel/Kconfig.hz 2006-06-18 15:24:28.000000000 +1000 |
13 | @@ -21,14 +21,17 @@ choice |
14 | help |
15 | 100 HZ is a typical choice for servers, SMP and NUMA systems |
16 | with lots of processors that may show reduced performance if |
17 | - too many timer interrupts are occurring. |
18 | + too many timer interrupts are occurring. Laptops may also show |
19 | + improved battery life. |
20 | |
21 | - config HZ_250 |
22 | + config HZ_250_NODEFAULT |
23 | bool "250 HZ" |
24 | help |
25 | - 250 HZ is a good compromise choice allowing server performance |
26 | - while also showing good interactive responsiveness even |
27 | - on SMP and NUMA systems. |
28 | + 250 HZ is a lousy compromise choice allowing server interactivity |
29 | + while also showing desktop throughput and no extra power saving on |
30 | + laptops. Good for when you can't make up your mind. |
31 | + |
32 | + Recommend 100 or 1000 instead. |
33 | |
34 | config HZ_1000 |
35 | bool "1000 HZ" |
36 | @@ -41,6 +44,6 @@ endchoice |
37 | config HZ |
38 | int |
39 | default 100 if HZ_100 |
40 | - default 250 if HZ_250 |
41 | + default 250 if HZ_250_NODEFAULT |
42 | default 1000 if HZ_1000 |
43 |