I was playing around with binary serialization and deserialization in Rust and noticed that binary deserialization is several orders of magnitude slower than with Java. To eliminate the possibility of overhead due to, for example, allocations and overheads, I’m simply reading a binary stream from each program. Each program reads from a binary file on disk which contains a 4-byte integer containing the number of input values, and a contiguous chunk of 8-byte big-endian IEEE 754-encoded floating point numbers. Here’s the Java implementation:

I was playing around with binary serialization and deserialization in Rust and noticed that binary deserialization is several orders of magnitude slower than with Java. To eliminate the possibility of overhead due to, for example, allocations and overheads, I’m simply reading a binary stream from each program. Each program reads from a binary file on disk which contains a 4-byte integer containing the number of input values, and a contiguous chunk of 8-byte big-endian IEEE 754-encoded floating point numbers. Here’s the Java implementation:

I was playing around with binary serialization and deserialization in Rust and noticed that binary deserialization is several orders of magnitude slower than with Java. To eliminate the possibility of overhead due to, for example, allocations and overheads, I’m simply reading a binary stream from each program. Each program reads from a binary file on disk which contains a 4-byte integer containing the number of input values, and a contiguous chunk of 8-byte big-endian IEEE 754-encoded floating point numbers. Here’s the Java implementation: