https://github.com/digimortl/ftrace
Simple ftrace'ing script
https://github.com/digimortl/ftrace
bash bash-scripting debug debugging ftrace graph linux linux-debugging linux-kernel shell shell-scripting tracing
Last synced: about 2 months ago
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Simple ftrace'ing script
- Host: GitHub
- URL: https://github.com/digimortl/ftrace
- Owner: digimortl
- License: mit
- Created: 2025-03-29T04:41:34.000Z (about 2 months ago)
- Default Branch: main
- Last Pushed: 2025-03-29T04:56:06.000Z (about 2 months ago)
- Last Synced: 2025-03-29T05:26:47.952Z (about 2 months ago)
- Topics: bash, bash-scripting, debug, debugging, ftrace, graph, linux, linux-debugging, linux-kernel, shell, shell-scripting, tracing
- Language: Shell
- Homepage:
- Size: 0 Bytes
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
## Simple ftrace script
### Usage
```bash
# ./ftrace
Usage: ftrace start [-g|--graph] [PROGRAM|PID]
Usage: ftrace stop
```
### Starting ftrace for a program
```bash
# ./ftrace start --graph cat /515f5cfd/a.txt
function_graph tracer enabled
tracee: cat /515f5cfd/a.txt
cat /515f5cfd/a.txt: Input/output error
```
### Starting ftrace for a running process (by PID)
```bash
# ./ftrace -g start 1
function_graph tracer enabled
tracee: PID 1
```
### Stopping ftrace
```bash
# ./ftrace stop
Tracer disabled, check trace.txt file.
```
### Checking collected traces
```bash
# cat trace.txt
...
7) | __x64_sys_openat() {
7) | do_sys_openat2() {
7) | getname() {
7) 0.161 us | __audit_reusename();
7) | getname_flags.part.0() {
7) | kmem_cache_alloc() {
...
7) 0.165 us | __cond_resched();
7) 0.269 us | __ext4_error_inode [ext4]();
7) 0.174 us | __brelse();
7) + 51.008 us | }
...
7) | put_unused_fd() {
7) 0.180 us | _raw_spin_lock();
7) 0.167 us | _raw_spin_unlock();
7) 0.834 us | }
7) 0.160 us | putname();
7) ! 136.884 us | }
7) ! 137.267 us | }
...
```