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Re: Heads up: moving some uvmexp stat to being per-cpu
Eduardo Horvath wrote:
> On Wed, 15 Dec 2010, Martin Husemann wrote:
> > I have one stupid question: why can't we leave the size of the counters
> > at 32bit on a per arch basis?
> Or use 64-bit counters but just update the lower 32-bits of them. Is
> there some danger that a 32-bit counter will overflow?
My home server has been up for 70 days, and the largest counter is
3826338196 software interrupts
which is pretty close to 2^32 (if I counted the digits correctly).
I haven't looked at Matt's diff yet, but 64 bit uvmexp counters was
always one of those little projects I meant to get around to one day
but didn't. Nice to see this at last.
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