Decision Workspace
numalloc vs fastalloc vs tcmalloc-better
Side-by-side comparison of Rust crates
49
numalloc
experimentalv0.1.2
A blazing-fast, NUMA-aware memory allocator written in pure Rust
55
fastalloc
growingv1.5.0
High-performance memory pooling library with type-safe handles, predictable latency, and zero fragmentation. Perfect for game engines, real-time systems, and high-churn workloads.
54
tcmalloc-better
growingv0.1.19
A Rust wrapper over Google's TCMalloc memory allocator
Core Metrics
| numalloc | fastalloc | tcmalloc-better | |
|---|---|---|---|
| Health Score | 49 | 55 | 54 |
| Total Downloads | 105 | 642 | 72.8K |
| 30d Downloads | 0 | 0 | 11.5K |
| Dependents | 6 | 0 | 5 |
| Releases | 3 | 4 | 20 |
| Last Updated | 44d ago | 208d ago | 343d ago |
| Age | 1m | 7m | 1y |
Health Breakdown
numalloc
Maintenance
11
Quality
15
Community
8
Popularity
2
Documentation
13
fastalloc
Maintenance
11
Quality
20
Community
6
Popularity
3
Documentation
15
tcmalloc-better
Maintenance
9
Quality
19
Community
8
Popularity
6
Documentation
12
Technical Details
| numalloc | fastalloc | tcmalloc-better | |
|---|---|---|---|
| Version | 0.1.2 | 1.5.0 | 0.1.19 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✗ No |
| License | MIT | MIT | MIT |
| Dependencies | 4 | 7 | 2 |
| Crate Size | 48KB | 83KB | 9KB |
| Features | 2 | 8 | 13 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2024 | 2021 | 2024 |
| MSRV | — | 1.70.0 | 1.87.0 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •fastalloc leads with a health score of 55/100, but none of the options score above 80.
- •tcmalloc-better has the most downloads (72.8K), suggesting wider adoption.
- •numalloc, tcmalloc-better are pre-1.0 — API may change.