reconstruct caused mailboxes (skiplist) corruption?

Gary Mills mills at
Thu Nov 11 20:51:31 EST 2010

On Fri, Nov 12, 2010 at 10:33:15AM +1100, Bron Gondwana wrote:
> Sorry - I've been busy working on the specific problem rather than the
> overview, and I realised I kind of glossed over this bit:
> On Thu, Nov 11, 2010 at 02:24:47PM -0200, Henrique de Moraes Holschuh wrote:
> > This probably needs a redesign of master/service fd-passing protocol,
> > and of prot streams to be fixed for good.   While at it, we should
> > switch the master/service interaction to a modern design, since the
> > operating system worth bothering with nowadays deal sanely with the
> > thundering herd effect, and all of them have proper socket event support
> > (epoll-like. Would require one of the event abstraction libraries,
> > though, so as to support linux/bsd/solaris with minimum fuss).
> Certainly worth considering.  I won't have the time to work on it for
> while since what we have now works fine for us.  I'll be focussing my
> work on new features pretty soon, once 2.4.x is stable enough that I
> can trust that it will be reliable for people!  But if you want to look
> at it and come up with something better for 2.5 or even further ahead,
> that would be fantastic.  There's certainly plenty of parts of Cyrus
> that could do with some modernising!

Isn't the modern design multiple threads, rather than multiple
processes?  That seems to me to be the right direction for Cyrus.
It might even make for a simpler design.

-Gary Mills-        -Unix Group-        -Computer and Network Services-

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