Introduce IO::DEFAULT_BUFFER_SIZE
#12507
Merged
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As a result of the discussion in https://forum.crystal-lang.org/t/io-copy-buffer-too-small/1873, this patch introduces a constant
IO::DEFAULT_BUFFER_SIZE
which holds the default size of a generic stream buffer.This size is also increased from 4K (most IO operations) and 8K (
IO::Buffered
) to 32K which should be a good default for modern machines.