elbaro / downtown Goto Github PK

1. Show currently running script file / function / lines
   -> too much overhead

2. Only show a list of files & stats per file

3. Do not implement and use py-spy

syntect
syntect-tui

https://github.com/chanq-io/syntect-tui/blob/main/src/lib.rs
https://github.com/gyscos/cursive/blob/main/cursive-syntect/examples/parse.rs

One can create a list of preconditions. Probes are active only when all preconditions are true.

1. User scrolls to the table header
2. Press enter
3. Show checkboxes (min, p50, gc count, gc time, malloc count, malloc amount, malloc time)

1. Go to a line
2. A new panel shows sub function calls
3. Select a sub call and press enter

Cache the last 10 source file parsing + highlight in memory

BPF Probe test

> sudo  /usr/share/bcc/tools/tplist -l /home/user/projects/cpython/python
> sudo bpftrace -lv  # show args
> sudo bpftrace -l -p 146893 | rg usdt
> sudo bpftrace -e 'usdt:/home/user/projects/cpython/python:line { printf("%s %s %d\n", str(arg0), str(arg1), arg2); }'
> sudo bpftrace -e 'usdt:/home/user/projects/cpython/python:python:function__entry { printf("%s %s\n", str(arg0), str(arg1)); }'

• If a filepath or funcname is longer than 128 bytes, use concat(hash(path[:-128]).to_u64_string(), path[-128:]) instead.
• Document the overhead of such logic

tonari-actor logs the error and shutdowns the system. It has no way to propagate the error to the user.

Show pid and python interpreter binary

Accepts a user provided bpf functions.