Contents of /trunk/kernel26-alx/patches-2.6.21-r14/0021-2.6.21-hz-no_default_250.patch
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Tue Jan 22 17:55:52 2008 UTC (16 years, 9 months ago) by niro
File size: 1729 byte(s)
Tue Jan 22 17:55:52 2008 UTC (16 years, 9 months ago) by niro
File size: 1729 byte(s)
-2.6.21-alx-r14 - fixed some natsemi errors on wys terminals
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 | 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 |