Decision Workspace
perfcnt vs perf-event-open vs granular-metrics
Side-by-side comparison of Rust crates
43
perfcnt
growingv0.8.0
Library to configure and read hardware performance counters in rust.
54
perf-event-open
growingv0.5.0
Full-featured support for the `perf_event_open` syscall.
53
granular-metrics
experimentalv0.2.1
Zero-middleware metrics counter that emits per-key and aggregate RPS/RPM snapshots every second
Core Metrics
| perfcnt | perf-event-open | granular-metrics | |
|---|---|---|---|
| Health Score | 43 | 54 | 53 |
| Total Downloads | 457.6K | 9.1K | 680 |
| 30d Downloads | 28.9K | 163 | 4 |
| Dependents | 190 | 15 | 0 |
| Releases | 20 | 25 | 3 |
| Last Updated | 1485d ago | 16d ago | 79d ago |
| Age | 10y 6m | 1y 4m | 11m |
Health Breakdown
perfcnt
Maintenance
4
Quality
11
Community
9
Popularity
7
Documentation
12
perf-event-open
Maintenance
18
Quality
10
Community
6
Popularity
5
Documentation
15
granular-metrics
Maintenance
15
Quality
14
Community
6
Popularity
3
Documentation
15
Technical Details
| perfcnt | perf-event-open | granular-metrics | |
|---|---|---|---|
| Version | 0.8.0 | 0.5.0 | 0.2.1 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT | MIT | MIT OR Apache-2.0 |
| Dependencies | 5 | 11 | 10 |
| Crate Size | 28KB | 680KB | 25KB |
| Features | 0 | 36 | 2 |
| Yanked % | 5.0% | 20.0% | 0.0% |
| Edition | 2018 | 2021 | 2024 |
| MSRV | — | 1.80.0 | 1.85.1 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •perf-event-open leads with a health score of 54/100, but none of the options score above 80.
- •perfcnt has the most downloads (457.6K), suggesting wider adoption.
- •perfcnt is depended on by 190 crates — strongest ecosystem trust.
- •⚠ perfcnt has not been updated in over a year.