On Wednesday 22 January 2003 3:10 pm, Ivo van der Wijk wrote:
> On Wed, Jan 22, 2003 at 11:57:20AM +0000, Toby Dickenson wrote:
> >
> > 1. Obviously, use fewer threads. Do you have a component that otherwise
> > benefits from many threads?
> No, except that the server is pretty heavy loaded sometimes, and multiple
> threads should improve responsiveness (right?)

Not if your machine is cpu-bound.

You need enough threads to keep your cpu busy, but any more than that means 
each one gets a smaller share of the cpu, and a smaller share of the memory. 
All my Zopes have 1 or 2 worker threads.

> > 2. If you have large immutable state that does not hold references to
> > persistent objects, use application-specific code to share this state
> > between threads.
> Not really. The bloat is caused by a large squishdot site (20.000 comments)

That will really benefit from 2.6 and a bigger cache, as seb suggested. Fewer 
threads means you can have a bigger per-thread cache, for the same total 
memory usage.

Toby Dickenson

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