Switch Quart ASGI server to Uvicorn and disable logging

[pgjones]

As this is a HTTP/1 benchmarking exercise Uvicorn is sufficient and
faster than Hypercorn. Note that Uvicorn does not, as yet, support
multiple workers.

As logging seems to be disabled in other projects, it should be here
as it makes a large difference to the performance.

[waghanza]

Thanks for your contribution @pgjones

uvicorn seems to support --workers option now, @tomchristie made it on encode/uvicorn#136

[pgjones]

I don't think the workers option is in a released uvicorn yet, for me 0.3.5 gives Error: no such option: --workers.

[waghanza]

ok

I was running on 0.2.12 not latest

[waghanza]

I have those results

	Average	50th percentile	90th percentile	99th percentile	99.9th percentile	Standard deviation
uvicorn	393.51 ms	331.76 ms	467.43 ms	2398.67 ms	3538.11 ms	385923.00
hypercorn	183.65 ms	156.16 ms	229.90 ms	839.22 ms	2086.86 ms	148894.00

but I can explain the ratio by workers usage (I am on a 4x core)

@tomchristie I have seen encode/uvicorn#141, but will multi-worker feature will be planed ?

[waghanza]

@pgjones using uvicorn with multi-core seems to be possible through gunicorn, @see benoitc/gunicorn#1380 (comment)

[waghanza]

Comparing hypercorn to uvicorn, I have :

	Average	50th percentile	90th percentile	99th percentile	99.9th percentile	Standard deviation
uvicorn (uvloop)	130.10 ms	119.55 ms	221.25 ms	297.03 ms	632.84 ms	70348.67
uvicorn (asyncio)	254.94 ms	220.86 ms	310.65 ms	1566.48 ms	4158.92 ms	248798.00
hypercorn	173.71 ms	153.57 ms	204.29 ms	782.77 ms	2438.01 ms	138289.33

@pgjones Thanks for your suggestion 🎉 I think uvicorn is indeed a best option for us; do you mind git me write rights to your fork (I'll made the changes);

[pgjones]

Sure, go ahead.

[waghanza]

@pgjones I can not push on master ;-)

[tomchristie]

Yeah at the moment the story for multiple workers is “use a process manager”, eg gunicorn/supervisor/circus. We’re recommending that because they’re all super mature and handle monitoring processes & restarting etc. However for convienience I think we will add multiple workers back in at some point soonish.

[pgjones]

@waghanza Ah, I thought you were going to cherry-pick and edit the commit (which I'd prefer rather than pushing to my fork). Feel free to close this and take the commit and do whatever...

[waghanza]

Close for #387