Reading streams from launched shell process is slow
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Key: JRUBY-1406
URL: http://jira.codehaus.org/browse/JRUBY-1406
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.0.0
Environment: Mac OS X 10.4, JDK 1.5.0_07
Reporter: Nathan Fiedler
Attachments: patch.diff
Capturing large amounts of output from an external process (say `cat 100k.txt`)
is quite slow in JRuby. Discussed with Nick and he pointed me to ShellLauncher,
which I then examined and took out a few choice lines of code. The performance
for reading 168KB went from 13.37 seconds to 0.03. The tests still pass, and
I've even added another simple test.
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