tcp_isn_tick() / dummynet() callout madness ?

[Mike Silbersack]

On Sun, 30 Jan 2005, Robert Watson wrote:

> Note that the remainder run 1/100th as often, presumably because they do
> hz/10 or hz/100 or the like.  I've talked to both Colin Percival and Mike
> Silby about the problem -- since the callout_reset() is one of the more
> expensive parts of this code, Colin has been looking at some locking
> optimizations to lower the cost.  I attempted to convince Mike that if we
> thought the ISN sequencing was "sufficiently secure" with HZ of 100, then
> we should be able to still run it at hz/100 now instead of 1000 times per
> second, but he seems resistant.  I'll CC him so he's forced to reconsider
> :-).

You're right, reducing tcp_isn_tick to 100 hz won't really hurt anything. 
However, I'd still like an efficient way to run sometime once per tick. 
Is there a better place to hook in instead of callouts?

Mike "Silby" Silbersack