Vitalii Tymchyshyn created IO-329:
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Summary: FileUtils.writeLines uses unbuffered IO
Key: IO-329
URL: https://issues.apache.org/jira/browse/IO-329
Project: Commons IO
Issue Type: Bug
Components: Streams/Writers
Affects Versions: 2.3
Reporter: Vitalii Tymchyshyn
FileUtils.writeLines looks like next:
out = openOutputStream(file, append);
IOUtils.writeLines(lines, lineEnding, out, encoding);
openOutputStream opens plain FileOutputStream without any buffering and
IOUtils.writeLines does not add abyt buffering. This means each line require 2
write syscalls (one for the line and one for line separator). This makes call
very slow, especially for short lines
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