Decision Workspace
subms-arena-allocator vs fastarena vs safe-bump
Side-by-side comparison of Rust crates
45
subms-arena-allocator
experimentalv0.4.0
submillisecond.com cookbook recipe - memory: subms-arena-allocator. Bump-pointer arena with chunked growth, alignment math, and reset() for per-request reuse.
55
fastarena
experimentalv0.1.3
A zero-dependency, bump-pointer arena allocator with RAII transactions, nested savepoints, optional LIFO destructor tracking, and ArenaVec — built for compilers, storage engines, and high-throughput request-scoped workloads.
54
safe-bump
experimentalv0.2.1
Safe typed arena — zero unsafe, auto Drop, checkpoint/rollback, single-thread Arena + concurrent SharedArena
Core Metrics
| subms-arena-allocator | fastarena | safe-bump | |
|---|---|---|---|
| Health Score | 45 | 55 | 54 |
| Total Downloads | 12 | 166 | 2.1K |
| 30d Downloads | 0 | 0 | 1.0K |
| Dependents | 0 | 2 | 2 |
| Releases | 1 | 4 | 3 |
| Last Updated | 1d ago | 60d ago | 91d ago |
| Age | 1d | 2m | 3m |
Health Breakdown
subms-arena-allocator
Maintenance
13
Quality
16
Community
6
Popularity
1
Documentation
9
fastarena
Maintenance
15
Quality
15
Community
7
Popularity
3
Documentation
15
safe-bump
Maintenance
14
Quality
14
Community
7
Popularity
4
Documentation
15
Technical Details
| subms-arena-allocator | fastarena | safe-bump | |
|---|---|---|---|
| Version | 0.4.0 | 0.1.3 | 0.2.1 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT OR Apache-2.0 | MIT | Apache-2.0 |
| Dependencies | 1 | 3 | 1 |
| Crate Size | 6KB | 43KB | 27KB |
| Features | 2 | 1 | 0 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2024 | 2021 | 2024 |
| MSRV | 1.85 | 1.66 | 1.93 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •fastarena leads with a health score of 55/100, but none of the options score above 80.
- •safe-bump has the most downloads (2.1K), suggesting wider adoption.