Jun Wu 0cc8f5ce84 commitstore/bench-serialize: add benchmark for mincode ... Summary: Add benchmark for the newly added mincode serialization. An example run shows: serialize by cbor 32.573 ms 9.701 MB deserialize by cbor 79.471 ms serialize by cbor-packed 28.574 ms 7.801 MB deserialize by cbor-packed 73.337 ms serialize by bincode 25.175 ms 6.789 MB deserialize by bincode 23.193 ms serialize by mincode 19.687 ms 5.389 MB deserialize by mincode 24.852 ms serialize by handwritten 2.939 ms 5.389 MB deserialize by handwritten 7.963 ms serialize by abomonation 1.752 ms 10.389 MB deserialize by abomonation 6.060 ms Interesting facts: - mincode serialization is actually faster than bincode. (it would appear slower if vec was not preallocated). - mincode is much slower than handwritten. This is partially caused by serde not having a native "fixed array" type so it cannot do `write_all(&[u8; 20])` but has to `write_u8(x)` 20 times (which translates to `Vec::extend_from_slice` 20 times. Regardless, the main reason I think mincode is compelling is its compactness and relatively good performance. Although handwritten is the fastest, the mincode performance is fine in the commit storage usecase, since mincode is probably not the bottleneck. Reviewed By: kulshrax Differential Revision: D17087352 fbshipit-source-id: 820ff8538d3ab9ebef2eda0a40cad126e26db622		2019-09-06 13:13:49 -07:00
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src	commitstore/bench-serialize: add benchmark for mincode	2019-09-06 13:13:49 -07:00
Cargo.toml	commitstore/bench-serialize: add benchmark for mincode	2019-09-06 13:13:49 -07:00