> On Apr 18, 2017, at 9:02 PM, Craig Rodrigues <rodr...@crodrigues.org> wrote: > > On Mon, Apr 17, 2017 at 2:10 AM, Hynek Schlawack <h...@ox.cx > <mailto:h...@ox.cx>> wrote: > > I have to disagree here BTW. When I started using Twisted as a WSGI > container, I was vexed by its lack of docs (and I’m still confused about many > details). There’s a few blog posts around but none of them reach the > straight-forwardibility of e.g. gunicorn’s docs. I’ve ended up asking around > on IRC, stealing from Donald/PyPI, and reading source code. > > I honestly believe, we’re leaving money on the table here. Using Twisted as > a WSGI container should be first class use case on the web page since it > presents a nice entry drug into the ecosystem. > > > If someone was not dedicated to Twisted, why would they even bother going > through all the steps that you did to > figure out how to use Twisted as a WSGI container? I'm amazed that even you > did not give up. :) > > Do you have any idea how Twisted fares in performance benchmarks of WSGI > containers? > Moshe's presentation didn't cover this, and I forgot to ask him at the > presentation. > I also couldn't find any WSGI benchmarks which included Twisted.
Do be honest, it probably doesn't do all that well. Making the container multi-process (as Moshe notes) would be a good first step to getting something worth benchmarking. But, I should note, the obsession with benchmarks in WSGI containers is a symptom of a generally industry-wide lack of understanding of good performance analysis. The fastest WSGI container is probably 2% of your application's overhead; the slowest possible one, maybe 3%. The differences look huge when you're comparing servers against each other, but throw a real application and a database and some load balancer latency in there and the app server container utterly disappears. Even multi-process support isn't really about optimizing for performance (although certainly leveraging multiple cores helps), it's about being able to safely crash a WSGI container process without bringing down the whole server. -glyph
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