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SubjectRe: [PATCH] HZ: 300Hz support
Alan Cox wrote:
> Fix two things. Firstly the unit is "Hz" not "HZ". Secondly it is useful
> to have 300Hz support when doing multimedia work. 250 is fine for us in
> Europe but the US frame rate is 30fps (29.99 blah for pedants). 300
> gives us a tick divisible by both 25 and 30, and for interlace work 50
> and 60. It's also giving similar performance to 250Hz.
>
> I'd argue we should remove 250 and add 300, but that might be excess
> disruption for now.
>
> Signed-off-by: Alan Cox <alan@redhat.com>
>
> diff -u --new-file --recursive --exclude-from /usr/src/exclude
> linux.vanilla-2.6.19-rc4-mm1/kernel/Kconfig.hz
> linux-2.6.19-rc4-mm1/kernel/Kconfig.hz
> --- linux.vanilla-2.6.19-rc4-mm1/kernel/Kconfig.hz 2006-10-31
> 15:40:54.000000000 +0000
> +++ linux-2.6.19-rc4-mm1/kernel/Kconfig.hz 2006-11-08 17:06:38.000000000
> +0000
> @@ -7,7 +7,7 @@
> default HZ_250
> help
> Allows the configuration of the timer frequency. It is customary
> - to have the timer interrupt run at 1000 HZ but 100 HZ may be more
> + to have the timer interrupt run at 1000 Hz but 100 Hz may be more
> beneficial for servers and NUMA systems that do not need to have
> a fast response for user interaction and that may experience bus
> contention and cacheline bounces as a result of timer interrupts.
> @@ -19,21 +19,30 @@
> config HZ_100
> bool "100 HZ"
[...]
> config HZ_250
> bool "250 HZ"
[...]
> + config HZ_300
> + bool "300 HZ"
[...]
> config HZ_1000
> bool "1000 HZ"

Shouldn't be these also changed (I mean those in quotes)?

regards,
--
http://www.fi.muni.cz/~xslaby/ Jiri Slaby
faculty of informatics, masaryk university, brno, cz
e-mail: jirislaby gmail com, gpg pubkey fingerprint:
B674 9967 0407 CE62 ACC8 22A0 32CC 55C3 39D4 7A7E
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