---
title: "Open Source — IOP Systems"
description: "Open-source tools and Rust crates from IOP Systems, including Rezolus, rpc-perf, llm-perf, metriken, histogram, clocksource, ratelimit, and nvml-wrapper."
url: "https://iop.systems/oss/"
---

# Open Source

Open-source tools and Rust crates from IOP Systems.

- [rezolus](https://github.com/iopsystems/rezolus) — eBPF-based telemetry agent that collects and processes systems telemetry. Fused with application metrics, it enables business-to-metal analysis of any runtime. Recent versions ship a built-in chart viewer and an MCP server.
- [llm-perf](https://github.com/iopsystems/llm-perf) — Benchmarking tool for LLM inference services, with detailed analysis of throughput, latency, and resource utilization across models and serving configurations.
- [rpc-perf](https://github.com/iopsystems/rpc-perf) — Performance measurement tool for popular RPC services (Redis, Kafka, Memcached, gRPC), highlighting the relationship between throughput and latency distribution with detailed histograms.
- [metriken](https://crates.io/crates/metriken) — Extremely efficient library for static metrics, supporting all metric types with an ergonomic, distributed declaration syntax.
- [histogram](https://crates.io/crates/histogram) — Efficient histograms for latency and distribution measurement.
- [clocksource](https://crates.io/crates/clocksource) — Precise and efficient access to system clocks for performance-sensitive applications.
- [ratelimit](https://crates.io/crates/ratelimit) — Token-generation library for rate control in high-throughput, latency-sensitive scenarios such as load generation, traffic shaping, and latency measurement.
- [nvml-wrapper](https://crates.io/crates/nvml-wrapper) — The most popular Rust wrapper of the NVIDIA Management Library (NVML).