murmurhash vs xxhash: What are the differences?

Introduction:

MurmurHash and xxHash are both non-cryptographic hashing algorithms widely used in various applications. Understanding their key differences can help in choosing the appropriate algorithm for specific use cases.

1. Output Size: MurmurHash typically produces a 32-bit or 64-bit hash value, while xxHash can generate hash values of various sizes, ranging from 32 bits to 128 bits.

2. Speed: xxHash is generally known for its superior speed compared to MurmurHash, making it a preferred choice in scenarios where fast hashing is crucial.

3. Collision Resistance: MurmurHash provides better collision resistance compared to xxHash, which means it is less likely to produce the same hash value for different inputs.

4. Implementation Complexity: MurmurHash tends to have a more complex implementation than xxHash, which can impact the ease of use and integration in certain applications.

5. Memory Footprint: xxHash is noted for its low memory footprint, making it suitable for embedded systems or environments with limited memory resources compared to MurmurHash.

6. Seed Support: MurmurHash supports seeding the hash function with a specific value, allowing for improved randomness in hash generation, while xxHash does not offer the same level of seed support.

In Summary, MurmurHash and xxHash differ in output size, speed, collision resistance, implementation complexity, memory footprint, and seed support.