can castero be faster?

i start use and review castero i fell castero startup is slow ( i know that is python program) i add only one feed only ( i am not test more feed can affect that) that is output of time for ranger and castero

➜  ~ time ranger
ranger  0.47s user 0.02s system 47% cpu 1.027 total
➜  ~ time ranger
ranger  0.47s user 0.02s system 43% cpu 1.124 total
➜  ~ time ranger
ranger  0.45s user 0.04s system 45% cpu 1.059 total
➜  ~ time castero 
castero  0.80s user 0.46s system 64% cpu 1.946 total
➜  ~ time castero
castero  0.82s user 0.42s system 59% cpu 2.082 total
➜  ~ time castero
castero  0.81s user 0.44s system 38% cpu 3.215 total

if reading from disk make castero slower ranger has more config file. startup and cpu usage is so high. i think ranger is slow to but feature couldn’t found any where (image preview) which part of code could make castero slow? have a podcast player in terminal is so awesome and thanks for your program so much.

[xgi]

@hebecked I updated castero with #86 which reduces the latency in (mostly) the way I described above. The only difference is that the episode menu won’t actually be blank temporarily, it will instead temporarily keep the contents of what was previously loaded. Regardless, the client should be much faster now.

I also noticed that the default footer message (which said like “Loaded x feeds with y episodes”) was making some pretty heavy database requests, so I’ve simply removed it for now. I might add it back somewhere else (like the help menu) but I don’t think it’s a big deal.

I also also noticed while importing your list that the UX for importing wasn’t very good for large OPMLs. So I created #87 which lists each feed as it’s added, or any errors. There might be some more improvements to make (like optionally skipping feeds which already exist) but this is much better than the screen being blank for 20 minutes.

I’m going to close this issue now since I think there were some significant performance improvements. If anyone has additional performance concerns (especially specific ones), feel free to make another issue.

Thanks!

[hebecked]

@xgi Thanks so much for the quick response and your willingness to fix this. Here the file I used. .opml ist not supported though, so I changed the file ending to .txt.

PodcastAddict_export_20200111_145250.txt