Decision Workspace
p99 vs llm-latency-lens-metrics vs metrics-lib
Side-by-side comparison of Rust crates
48
p99
experimentalv0.0.2
Low-cost generation of performance percentiles (p50, p90, p99, etc.)
38
llm-latency-lens-metrics
experimentalv0.1.0
Metrics collection and aggregation for LLM Latency Lens
63
metrics-lib
growingv1.0.0
High-performance Rust metrics library: sub-2ns counters, sub-1ns gauges, nanosecond timers, tumbling-window rate meters, async timing, adaptive sampling, and system health. Cross-platform with minimal dependencies.
Core Metrics
| p99 | llm-latency-lens-metrics | metrics-lib | |
|---|---|---|---|
| Health Score | 48 | 38 | 63 |
| Total Downloads | 55 | 178 | 35.1K |
| 30d Downloads | 0 | 0 | 0 |
| Dependents | 0 | 1 | 19 |
| Releases | 3 | 1 | 12 |
| Last Updated | 1d ago | 248d ago | 55d ago |
| Age | 19d | 8m | 10m |
Health Breakdown
p99
Maintenance
14
Quality
16
Community
6
Popularity
2
Documentation
10
llm-latency-lens-metrics
Maintenance
4
Quality
12
Community
6
Popularity
3
Documentation
13
metrics-lib
Maintenance
16
Quality
17
Community
10
Popularity
5
Documentation
15
Technical Details
| p99 | llm-latency-lens-metrics | metrics-lib | |
|---|---|---|---|
| Version | 0.0.2 | 0.1.0 | 1.0.0 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | BSD-3-Clause | Apache-2.0 | Apache-2.0 |
| Dependencies | 2 | 9 | 19 |
| Crate Size | 19KB | 29KB | 218KB |
| Features | 3 | 0 | 17 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2021 | 2021 | 2021 |
| MSRV | — | — | 1.70 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •metrics-lib leads with a health score of 63/100, but none of the options score above 80.
- •p99, llm-latency-lens-metrics are pre-1.0 — API may change.