Idler is a debugging utility to create a high-load condition on the host without actual need to high-volume traffic.

Currently it establishes ~512k connections to itself (totalling to 1M open network sockets) and send one byte every 10 seconds.

On my machine this is corresponds to ~145% CPU utilization (1.5 cores), 62% sys utilization and 43% of IRQ), ~80Mbps on lo.

To run it install Rust toolchain and run cargo run --release. Sorry, no binary packages for now.

• You may want to raise open file limit (ulimit -n 1048576).
• Your dmesg may become full of nf_conntrack: nf_conntrack: table full, dropping packet (remove conntrack from localhost).
• TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:6379. Sending cookies. (should be okay to ignore).
• While program is establishing connections, everything will be sluggish on the computer (including unrelated tasks).

I'm learning Rust (tokyo and async, specifically), so my code is amateur.

Reasonable critique and advices are welcomed.