Help me understand this innreport

[Russ Allbery]

Paul Tomblin <ptomblin at xcski.com> writes:

> The innreport on http://freenet9.carleton.ca/~news/ shows some very
> strange behaviour.  That site was one major feed (from
> freenet-news.carleton.ca) and one minor one of only a few groups (from
> xcski.com).  xcski.com and freenet9 are both running inn 2.2.1 using
> innfeed to feed each other, and other people.  freenet-news is running
> inn 1.4 and feeds using nntpsend.  Here's the part I don't understand
> about freenet9:

> On a typical day, it reports as incoming feeds:
> Host            offered taken
> freenet-news    97921   91792
> xcski.com        6924    6921

> But for outgoing feeds, it reports:
> freenet-news   405368    2062
> xcski.com          58       0

> Why would it be offering to freenet-news 4.5 times as many articles as
> it's accepted?  Especially since I checked newsfeeds, and it has the
> correct path aliases, and I checked log/news and it shows that articles
> coming in from freenet-news are only being fed to crosspost and
> overview, usually.  (some are going to xcski.com as well)

I'm not sure if you ever got an answer to this, from way back when you
first sent it, but chances are high that this is because of deferrals.  If
you're nearly as fast as another peer, you'll often be offering the same
article at the same time, and 2.2 doesn't handle deferrals very well.  I
believe that there was some code to handle them better that was put into
2.3.

-- 
Russ Allbery (rra at stanford.edu)             <http://www.eyrie.org/~eagle/>