downtown's Issues
Latency, Frequency
Scroll Margin
Show the current target
Show pid and python interpreter binary
AST Tree View
Line-by-line profiling
Follow function call & Multi-file Support
- Go to a line
- A new panel shows sub function calls
- Select a sub call and press enter
Cache the last 10 source file parsing + highlight in memory
Scroll by function
Display & Scroll a Python file
Horizontal Scrolling
Top view
-
Show currently running script file / function / lines
-> too much overhead -
Only show a list of files & stats per file
-
Do not implement and use py-spy
Dynamic Bpf Expression
Accepts a user provided bpf functions.
Code Highlight
Reliable Error Handling
tonari-actor logs the error and shutdowns the system. It has no way to propagate the error to the user.
Count & display a function call
Preconditios
One can create a list of preconditions. Probes are active only when all preconditions are true.
Ruby
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)); }'
Long path handling
- 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
Configurable columns
- User scrolls to the table header
- Press enter
- Show checkboxes (min, p50, gc count, gc time, malloc count, malloc amount, malloc time)
v0.1.1
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