TRACER

Monitor live application either as child process or separate PID, collecting /displaying stats ( cpu usage, memory usage).

Note: For monitoring one-shot applications - see https://github.com/yarenty/appbenchmark._

Build

shell cargo build -r

Run

Create example app: shell cargo build --examples test_app

Run in txt mode and output persisted to out.csv file: shell cargo run -r -- -n -o out.csv /opt/workspace/app_tracer/target/debug/examples/test_app

Usage

```shell app-tracer 0.4.0 Tracing / benchmarking long running applications (ie: streaming).

USAGE: tracer [OPTIONS] [APPLICATION]

ARGS: Application to be run as child process (alternatively provide PID of running app)

OPTIONS: -h, --help Print help information -l, --log Set custom log level: info, debug, trace [default: info] -n, --noui No UI - only text output -o, --output

Name of output CSV file with all readings - for further investigations -p, --pid PID of external process -r, --refresh Refresh rate in milliseconds [default: 1000] -V, --version Print version information

```

Example output

``log cargo run -r -- -n -o out.csv /opt/workspace/app_tracer/target/debug/examples/test_app Compiling app-tracer v0.4.0 (/opt/workspace/app_tracer) Finished release [optimized] target(s) in 2.98s Runningtarget/release/tracer -n -o out.csv /opt/workspace/apptracer/target/debug/examples/testapp` 12:26:12.260 (t: main) INFO - tracer - Application to be monitored is: testapp, in dir /opt/workspace/apptracer/target/debug/examples/test_app 12:26:12.261 (t: main) INFO - tracer - Refresh rate: 1000 ms. 12:26:12.261 (t: main) INFO - tracer - Output readings persisted into "out.csv". 12:26:12.261 (t: main) INFO - tracer - Starting with PID::15008 12:26:12.296 (t: main) INFO - tracer - Running in TXT mode. 12:26:13.298 (t: main) INFO - tracer - CPU: 0 [%], memory: 2208 [kB] 12:26:14.303 (t: main) INFO - tracer - CPU: 0.0030129354 [%], memory: 2208 [kB] 12:26:15.308 (t: main) INFO - tracer - CPU: 0.0054045436 [%], memory: 2208 [kB] 12:26:16.309 (t: main) INFO - tracer - CPU: 0.0023218023 [%], memory: 2208 [kB] 12:26:17.311 (t: main) INFO - tracer - CPU: 0.006252239 [%], memory: 2208 [kB] 12:26:18.312 (t: main) INFO - tracer - CPU: 0.0036088445 [%], memory: 2208 [kB] 12:26:19.317 (t: main) INFO - tracer - CPU: 0.0057060686 [%], memory: 2208 [kB] 12:26:20.318 (t: main) INFO - tracer - CPU: 0.005099413 [%], memory: 2208 [kB] 12:26:21.318 (t: main) INFO - tracer - CPU: 0.007175615 [%], memory: 2208 [kB] 12:26:22.319 (t: main) INFO - tracer - CPU: 0.005251118 [%], memory: 2208 [kB] 12:26:23.319 (t: main) INFO - tracer - CPU: 0.0021786916 [%], memory: 2208 [kB] 12:26:24.321 (t: main) INFO - tracer - CPU: 0.006866733 [%], memory: 2208 [kB]

```

UI

CSV persistence

Example output.csv file:

csv Time,Cpu,Mem 11:27:16.394591,0,2136 11:27:17.396917,0.004986567,2136 11:27:18.397440,0.006548807,2136

CHANGELOG