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Drop the default buffer size to 8K

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The 64k capacity was picked by me a couple of years ago in the initial
implementation of buffered IO adaptors:
https://github.com/rust-lang/rust/pull/9091/files#diff-b131eeef531ad098b32f49695a031008R62.
64K was picked for symmetry with libuv, which we no longer use.

64K is *way* larger than the default size of any other language that I
can find. C, C++, and Java default to 8K, and Go defaults to 4K. There
have been a variety of issues filed relating to this such as #31885.

Closes #31885
This commit is contained in:
Steven Fackler 2016-04-02 22:12:52 -07:00
parent 5ab11d72ca
commit 8128817119
1 changed files with 1 additions and 1 deletions
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src/libstd/io/mod.rs
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@ -292,7 +292,7 @@ mod lazy;
mod util;
mod stdio;
const DEFAULT_BUF_SIZE: usize = 64 * 1024;
const DEFAULT_BUF_SIZE: usize = 8 * 1024;
// A few methods below (read_to_string, read_line) will append data into a
// `String` buffer, but we need to be pretty careful when doing this. The