在 https://github.com/ebfull/lightning_circuit （2016年，使用deprecated-master版本的libsnark）中，记录的performance为：
on computer (Intel® Core™ i7-3770S CPU @ 3.10GHz):
- key generation time: 11.6551s
- proof generation time: 3.0884s
- verification time: 0.0262s
- proof size: 2294 bits
- proving key size: 102284136 bits
- verifying key size: 4586 bits
- R1CS constraints: 56101 (mostly sha256-related)
在 https://github.com/3for/xjsnark （2019年），有提到：
Example (previews)DescriptionNumber of constraintsSHA-256 (Unpadded)High-level implementation of SHA-256 which is compiled to an optimized circuit similar to the one produced by manual/low-level libraries, as in jsnark.25538
