Messages in this thread | | | Date | Wed, 8 Nov 2006 23:39:24 +0100 | From | Willy Tarreau <> | Subject | Re: [PATCH] HZ: 300Hz support |
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On Wed, Nov 08, 2006 at 08:42:37PM +0000, 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.
I'd like to keep 250 for a simple reason : the period is an integer number of milliseconds. I find it very convenient to be able to convert jiffies to ms. It serves at several places, for instance, poll(). In fact, what I like with 250 is that there is no divide between ms and jiffies, but just a bit shift.
Regards, Willy
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