[Zope-dev] Zope and SMP

[Itamar Shtull-Trauring]

Thilo Mezger wrote:

> yesterday, i have test-driven zope on a dual-pentium smp-machine
> running linux 2.2 and i was very disappointed by the results.
> the zserver threads are running on both cpu's but it seems to
> scale really, really badly. i have only done some very cheap
> benchmarking but it seems that a single cpu is faster than 2 cpu's.

Python has an interpreter lock that can really slow things down on
multiprocessor computers, or so I've heard.  ZEO will solve this problem by
letting you run two instances of Zope on the same machine - check out the
ZEO Wiki on zope.org.

-- 
Itamar S.T.  itamar@maxnm.com