Comments on ..: hannosch :..: Zope 2.13 - alpha imminent

Zope2 is a full fledged application server and not...

2010-06-17T01:51:35.426+02:00

Zope2 is a full fledged application server and not a lightweight web framework. All the object publishing, automatic transaction handling, security machinery and so forth sum up to a couple thousand Python function invocations on every request. Those cause an overhead that is at least 1 ms in itself, likely even more.

So even if your view doesn't do anything, you won't get more than 500 or at most 1000 requests / sec out of it. The couple nanoseconds spent in ZServer are irrelevant at this point.

Indeed but when the "view" is very fast ...

2010-06-17T00:21:08.392+02:00

Indeed but when the "view" is very fast it does matter.

Got some Django code that is wrapped in a middleware that checks one thing (if you're not logged in) and serves the rendered page from memcache. These are fast and in my server benchmarks changing from FastCGI to uWSGI changed 500+ request/sec to 1,700+

Surprised that something basic as the quickstart page isn't more affected by a faster middle-tier server.

@peterbe: yes, it means you can use any WSGI serve...

2010-06-15T19:58:05.443+02:00

@peterbe: yes, it means you can use any WSGI server.

Much has been said about benchmarks, see http://nichol.as/benchmark-of-python-web-servers and http://blog.ianbicking.org/2010/03/16/web-server-benchmarking-we-need for different takes on this.

The only Zope specific benchmark I've seen is at http://lists.repoze.org/pipermail/repoze-dev/2007-September/000487.html

Basically that benchmark suggests that pure performance of the WSGI server is irrelevant. Even for a most trivial view like the quickstart page all of paste, zope.server and cherrypy have roughly the same results. For any normal view actually doing some database lookups the time spent in the WSGI server is going to be tiny compared to the time actually doing the work.

I'd follow Ian here and suggest to look for robustness in servers and care about performance in application code.

Does this mean that you can use uWSGI (within Ngin...

2010-06-15T19:38:24.068+02:00

Does this mean that you can use uWSGI (within Nginx) to talk directly to Zope?

Has anybody attempted this with some benchmarks?