[Asterisk-Dev] what's the value of a jiffie in zaptel driver ?

[Dinesh Nair]

hi all,

i'm trying to reconcile the register settings and proslic calibration 
procedure for the wcfxs/wctdm driver between the linux zaptel drivers and 
the freebsd zaptel drivers. i'm pretty much sure that a lot of the problems 
is timing (i.e. wait/sleep time) based differences and a lot of this is due 
to the assumption of what the variable jiffie contains.

i do believe that it is the number of clock ticks, however what's the 
frequency of the clock ticks ? is it 100 per second or 1000 per second ? 
this has a vast difference when used in code like this:

		origjiffies=jiffies;
		while((jiffies-origjiffies)<4);

is the above while looping for 4ms or 40ms ? the lack of comments in the 
file make it difficult to port, for freebsd's clock ticks are defined by 
the HZ kernel variable, which by default is set to 100, but can be 
increased (and is usually increased) to 1000 for performance sensitive 
deployments.

can anyone assist in clarifying what a jiffie is ?

-- 
Regards,                           /\_/\   "All dogs go to heaven."
dinesh at alphaque.com                (0 0)    http://www.alphaque.com/
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