Not that much this week, again; though it’s because I was covering support on Tuesday, and then off sick on Wednesday and Thursday.
I changed the metric we use to evaluate search performance from DCG to nDCG, and wrote a long commit message about why, which got me wondering what my most well-explained commit was. I came up with this script to rank my commits by proportion of commit message to commit diff:
for hash in $(git log --format='%H' --no-merges --email@example.com); do msg_len=$(git show --format='%B' --no-patch $hash | wc -c) full_len=$(git show --format='%B' $hash | wc -c) echo -e "$(echo "($full_len - $msg_len) / $msg_len" | bc -l)\t$(git show --oneline --no-patch $hash)" done | sort -h
Smaller numbers mean more explanation than diff. My most well-explained commit in search-api is:
commit f9410c9a7c4c8c4664125103d225eb83ddfba967 Author: Michael Walker <firstname.lastname@example.org> Date: Fri Apr 5 12:04:09 2019 +0100 Bump limit of default sidekiq queue to 8 We've occasionally seen a build up of sidekiq jobs (in both search-api and rummager). I experimented by bumping the limit on the "default" queue to 8 via the app console during one such spike: the jobs cleared much faster than in rummager (which still had the limit of 4), and the Elasticsearch search latency increased by maybe a couple of milliseconds - it's hard to say because any increase is small enough to be obscured by the natural variability of the metric. These limits were added to solve a problem, but that problem occurred with an almost totally different search architecture, so I think it's worth experimenting with the limits a bit. They could perhaps be increased further, but let's see how this change performs for now. diff --git a/config/sidekiq.yml b/config/sidekiq.yml index 46a23a0b..1706eef3 100644 --- a/config/sidekiq.yml +++ b/config/sidekiq.yml @@ -12,4 +12,4 @@ production: - bulk :limits: bulk: 4 - default: 4 + default: 8
My least well-explained commits all seem to be refactoring commits, and that trend holds across a few different repositories (including non-work ones).
I got a letter from HMRC saying I’d paid £2037 too much tax last year, so as soon as I claimed that back I bought an Oculus Quest and some games: Beat Saber, I Expect You To Die, and Moss. It arrived on Saturday morning, and I’ve spent a lot of this weekend in VR. Unlike other VR headsets, the Quest is entirely self-contained and doesn’t need external sensors or a connection to a computer (though next month it is getting the ability to play PC VR games if connected by a cable). I’m really impressed with how well it works, though some things—like browsing the web in VR—are a bit clunky, due to the limited number of buttons on the controllers. But for gaming it’s great.
I read a few books this week:
I had an idea for how to make a searchable local academic database: for each paper, write a little metadata (bibliographic data + a list of references) and use tesseract to extract the contents of the PDF as text. Plug all that into Elasticsearch, and you’ve got your own academic database. I had a go, and it seems like it would work pretty well.
- What Type Soundness Theorem Do You Really Want to Prove?
- What About the Natural Numbers? by José Manuel Calderón Trilla [PWLConf 2019]
- This Week in Rust 309
- Rats taught to drive tiny cars to lower their stress levels
- Simon Marlow, Simon Peyton Jones, and Satnam Singh win Most Influential ICFP Paper Award
- Issue 182 :: Haskell Weekly