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Last active Dec 17, 2015
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Ruby 1.9.3-p194 with DTrace probes, Perf Patches, and backported COW-friendly GC


This script installs a patched version of ruby 1.9.3-p194 with DTrace probes, boot-time performance improvements (#66 and #68), and runtime performance improvements (#83 and #84). It also includes the new backported GC from ruby-trunk.

Many thanks to funny-falcon for the performance patches and to Aaron Patterson for the DTrace instrumentation.


You will also need a C Compiler. If you're on Linux, you probably already have one or know how to install one. On OS X, you should install XCode, and brew install autoconf using homebrew.

Ok, let's do this!

curl | sh ; rbenv global 1.9.3-p194-dtrace

Warning: ruby*::vm_exec_core:function-* seem to be broken, causing SystemStackErrors in the ruby process you instrument.

build_package_combined_patch() {
local package_name="$1"
./configure --prefix="$PREFIX_PATH" $CONFIGURE_OPTS
make probes.h
make -j 8
make install
} >&4 2>&1
install_package "yaml-0.1.4" ""
# You can see the source for this package at
install_package "build" "" combined_patch
curl$ > /tmp/$VERSION-dtrace
rbenv install /tmp/$VERSION-dtrace
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arnab commented May 30, 2013

This fails for me:

Downloading ruby-1.9.3-p194-perf-dtrace.tar.gz...
/usr/local/opt/rbenv/plugins/ruby-build/bin/ruby-build: line 140: pushd: ruby-1.9.3-p194-perf-dtrace: No such file or directory


Also noted in

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