From: Wietse Venema (wietseporcupine.org)
Date: Tue Sep 23 2008 - 07:03:00 CDT

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ram:
>
> On Mon, 2008-09-22 at 13:03 -0400, Wietse Venema wrote:
> > ram:
> > > My milter is quiet simple. It just does a bsearch on a in-memory array ,
> > > to find if the recipient has blacklisted / whitelisted the sender and
> > > takes action accordingly
> > >
> > > The array now has approx 200k elements, which should be nothing for
> > > 4GBRam box
> >
> > What measures did you take to avoid errors (race conditions,
> > deadlock, etc.) due to concurrent access to this data structure?
> >
>
> The array is constant once the milter is started. To refresh the array I
> restart the milter every hour
> Do I have to still take care of deadlocks ?

Not is queries are delayed until the array stops changing. However there
is a possibility of disruption after the milter is stopped.

> Now I think this was due to some network issue. The ethernet links were
> on half-duplex for this machine. I have forced a full duplex and now the
> problem is apparently disappeared. ( fingers crossed )

        Wietse

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