On Tue, 21 Aug 2001, Giorgos Verigakis wrote:
> On Tue, 21 Aug 2001, Mike Silbersack wrote:
> > I suspect that the reload time spiking is due to our initial sequence
> > number generation scheme, which is currently shared with OpenBSD. This
> > will be changing RSN, which will likely change how your benchmarks look.
> > (They should look better after the change.)
>
> I don't understand. How is it related with the initial sequence number?
>
>
> >
> > I'm curious about the reload time, though. Is it really in seconds? What
> > is it measuring?
>
> Yes it's in seconds. What I wanted to measure was the time a page needs to
> be loaded, because the results I was getting were unexpectable.
The current scheme causes problems with TIME_WAIT recycling, which may
cause long delays in establishing new connections if you're connection to
the same host rapidly enough to cause TIME_WAIT recycling to be an issue.
This is why there's a huge spike only when you get to 1000 hits/second.
There could be other reasons, of course, but this will overshadow the
others. I tested your test program with apache, and the change is
noticeable. So, hold off on further testing until later this week.
Mike "Silby" Silbersack
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