html_url,issue_url,id,node_id,user,user_label,created_at,updated_at,author_association,body,reactions,issue,issue_label,performed_via_github_app
https://github.com/simonw/datasette/issues/1727#issuecomment-1112889800,https://api.github.com/repos/simonw/datasette/issues/1727,1112889800,IC_kwDOBm6k_c5CVVnI,9599,simonw,2022-04-29T05:29:38Z,2022-04-29T05:29:38Z,OWNER,"OK, I just got the most incredible result with that!

I started up a container running `bash` like this, from my `datasette` checkout. I'm mapping port 8005 on my laptop to port 8001 inside the container because laptop port 8001 was already doing something else:
```
docker run -it --rm --name my-running-script -p 8005:8001 -v ""$PWD"":/usr/src/myapp \
  -w /usr/src/myapp nogil/python bash
```
Then in `bash` I ran the following commands to install Datasette and its dependencies:
```
pip install -e '.[test]'
pip install datasette-pretty-traces # For debug tracing
```
Then I started Datasette against my `github.db` database (from github-to-sqlite.dogsheep.net/github.db) like this:

```
datasette github.db -h 0.0.0.0 --setting trace_debug 1
```
I hit the following two URLs to compare the parallel v.s. not parallel implementations:

- `http://127.0.0.1:8005/github/issues?_facet=milestone&_facet=repo&_trace=1&_size=10`
- `http://127.0.0.1:8005/github/issues?_facet=milestone&_facet=repo&_trace=1&_size=10&_noparallel=1`

And... the parallel one beat the non-parallel one decisively, on multiple page refreshes!

Not parallel: 77ms

Parallel: 47ms

<img width=""1213"" alt=""CleanShot 2022-04-28 at 22 10 54@2x"" src=""https://user-images.githubusercontent.com/9599/165889437-60d4200d-698a-4175-af23-7c03bb456e66.png"">

<img width=""1213"" alt=""CleanShot 2022-04-28 at 22 10 21@2x"" src=""https://user-images.githubusercontent.com/9599/165889445-2dfb8676-d823-405e-aecb-ad28ec3043da.png"">

So yeah, I'm very confident this is a problem with the GIL. And I am absolutely **stunned** that @colesbury's fork ran Datasette (which has some reasonably tricky threading and async stuff going on) out of the box!","{""total_count"": 2, ""+1"": 2, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1217759117,Research: demonstrate if parallel SQL queries are worthwhile,