[Zope-dev] How to make Zope fail nicely under high load?

[Dario Lopez-Kästen]

Bjorn Stabell wrote:
> It appears the way to control it would for Apache or Zope to return "503
> Service Unavailable" when the load is too high, but we haven't found a
> good way to do this; Zope doesn't appear to have any mechanism for it,
> and Apache's ProxyPass doesn't either.  I guess load balancers would,
> but that's a bit overkill since we run the server on one machine.

Hi, I'm very interested in your resutsl. We have exaclty the same 
situation, though we have not analysed it further - the only thing that 
saves us is to restart zope.

re: load balancing: there is Pound - http://www.apsis.ch/pound/ - that 
might serve as a loadbalancer between processes in a single machine.

Maybe that will help a bit, though it doesn't really resolve the issue 
with zope choking; if it works, it will merely circumvent it.

hth,

/dario

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Dario Lopez-Kästen, IT Systems & Services Chalmers University of Tech.