Decision Workspace
buddy_system_allocator vs linked_list_allocator vs ax_slab_allocator
Side-by-side comparison of Rust crates
59
buddy_system_allocator
growingv0.12.0
A bare metal allocator that uses buddy system.
59
linked_list_allocator
growingv0.10.5
Simple allocator usable for no_std systems. It builds a linked list from the freed blocks and thus needs no additional data structures.
49
ax_slab_allocator
experimentalv0.4.0
Slab allocator for `no_std` systems. Uses multiple slabs with blocks of different sizes and a linked list for blocks larger than 4096 bytes
Core Metrics
| buddy_system_allocator | linked_list_allocator | ax_slab_allocator | |
|---|---|---|---|
| Health Score | 59 | 59 | 49 |
| Total Downloads | 1.2M | 3.8M | 3.3K |
| 30d Downloads | 145.9K | 307.7K | 1.6K |
| Dependents | 168 | 327 | 2 |
| Releases | 25 | 46 | 2 |
| Last Updated | 74d ago | 1119d ago | 33d ago |
| Age | 7y | 10y 1m | 1m |
Health Breakdown
buddy_system_allocator
Maintenance
14
Quality
16
Community
9
Popularity
7
Documentation
13
linked_list_allocator
Maintenance
6
Quality
17
Community
15
Popularity
8
Documentation
13
ax_slab_allocator
Maintenance
12
Quality
14
Community
9
Popularity
4
Documentation
10
Technical Details
| buddy_system_allocator | linked_list_allocator | ax_slab_allocator | |
|---|---|---|---|
| Version | 0.12.0 | 0.10.5 | 0.4.0 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT | Apache-2.0/MIT | MIT |
| Dependencies | 5 | 1 | 1 |
| Crate Size | 16KB | 23KB | 6KB |
| Features | 3 | 5 | 0 |
| Yanked % | 0.0% | 4.3% | 0.0% |
| Edition | 2021 | — | 2021 |
| MSRV | — | 1.61 | — |
| Owners | 1 | 2 (team) | 2 (team) |
Links
Quick Verdict
- •buddy_system_allocator leads with a health score of 59/100, but none of the options score above 80.
- •linked_list_allocator has the most downloads (3.8M), suggesting wider adoption.
- •linked_list_allocator is depended on by 327 crates — strongest ecosystem trust.
- •⚠ linked_list_allocator has not been updated in over a year.