Add a BufReader benchmark for reads smaller than the buffer #1460
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Kobzol
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Oct 8, 2022
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I think this is a reasonably-real-world example of running into the regression in rust-lang/rust#102727
The idea is that a user may drive a
BufReaderby manually accessing the buffer, then callingconsumethenfill_buf. The regression is hit when the wrappedReadimpl doesn't fill the wholeBufReaderbuffer in one read. Which a snappy decoder won't, because a decompressed data frame is limited to 65536 bytes.