Annotation of /trunk/kernel26-alx/patches-2.6.21-r13/0021-2.6.21-hz-no_default_250.patch
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Revision 445 -
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Tue Jan 15 00:44:37 2008 UTC (16 years, 8 months ago) by niro
File size: 1729 byte(s)
Tue Jan 15 00:44:37 2008 UTC (16 years, 8 months ago) by niro
File size: 1729 byte(s)
-added patches for 2.6.21-alx-r13
1 | niro | 445 | 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 |