[Zope] zope performance issues

Robert Segall roseg at apsis.ch
Fri May 21 11:47:31 EDT 2004

On Friday 21 May 2004 12.29, Trevor Warren wrote:
> --- Dieter Maurer <dieter at handshake.de> wrote:
> > ZEO will only speed things up when more CPUs are
> > involved.
> > You will then also want to have a LoadBalancer (e.g.
> > "pound")
> > to send requests to the different Zope processes.
> [snip]
>  Thanks again Dieter, As of now the testing tool has
> been programmed to come up with hits to the Zope

I don't really know what is it you do, but I can give you a few indicators:

- Duron 1GHz, 256M, plain Zope + DirectoryStorage achieves an easy 30 reqs/sec 
on relatively static storage (DTML).
- Same for heavier load (complex pages + images) does comfortably 20 reqs/sec

Both are straight to Zope, no caches!

- 2xAMD 2200+, 512M, ZEO + 1 client + Pound achieves sustained 120 reqs/sec on 
normal pages (ZPT).

- 4 machines (each AMD 2000+, 256M), ZEO, 4 clients, Pound: sustained 280 
reqs/sec, peaks over 400.

All of the above are long-term statistics from our clients.

I strongly suggest you have a look at your network topology, logging setup, 
profiling, etc. In most cases the kind of problems you describe have little 
to do with Zope - most often it's some name resolution problem or a badly 
written application.
Robert Segall
Apsis GmbH
Postfach, Uetikon am See, CH-8707
Tel: +41-1-920 4904

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