Performance Problems /w paste.httpserver

[http://clarkevans.com/]

As pointed out by Amir Salihefendic <amix@…>, current httpserver performace is less than half that of CherryPy?'s implementation:  http://svn.cherrypy.org/trunk/cherrypy/_cpwsgiserver.py

This is most likely due to their thread-pooling vs. the brain-dead stuff that the built-in SimpleServer? does. There are a few items part of this transition:

1. Work with CherryPy?'s code to add SSL and better HTTP/1.1 compliance

2. Strip out code that isn't absolutely necessary.

3. Replace httpserver.py with the result, and test like mad.

Ideally, the result could be put back into CherryPy?'s tree where we use an external link (they are BSD licensed same as us). However, if they do not accept our patches; we will fork and watch their code for changes -- a less than ideal situation.

[http://clarkevans.com/]

 http://www.cherrypy.org/ticket/485

[Link]

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[james@…]

I think the thread pool is the real advantage here, not the other little tweaks in cpwsgiserver (like not using the SocketServer? framework to gain some method resolution speed or something).

Instead of adapting the cherrypy code we can just use the existing paste code, but replace the ThreadingMixIn? functionality with a different implementation for process_request that dispatches to a thread pool. This patch does exactly that.

[james@…]

patch for thread pool.

[james@…]

patch for thread pool.

[http://pjenvey.myopenid.com/]

thanks james

FYI here's james' benchmarks:

 http://jamestaylor.org/files/paste_httpserver.readme

[http://pjenvey.myopenid.com/]

Clark -

Could you provide more details about the 1.1 comliance paste might still lack compared to cherrypy?

If there's a lot involved there, it probably needs its own ticket

Obviously we have SSL now

[http://pjenvey.myopenid.com/]

Committed this in r5468

I've gone ahead and made the thread pooled server the default. It seems solid enough, and if anyone encounters problems with it they can switch it off with:

[server:main] use = egg:Paste#http use_threadpool = false

I bumped the default number of threads to 10 from the patch's default of 5

That can be changed in the [server:main] section as well:

threadpool_workers = 20

Thanks again James!

I'm closing this ticket out. Again, Clark, if there's some 1.1 compliance issues we need to work on, let's file a separate ticket

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Milestone 0.9 deleted