Faster PStore

new_pstore.log

% time ruby pstore_bench.rb
ruby pstore_bench.rb  1.40s user 0.29s system 99% cpu 1.693 total
% time ruby pstore_bench.rb
ruby pstore_bench.rb  1.81s user 0.23s system 100% cpu 2.036 total
% time ruby pstore_bench.rb
ruby pstore_bench.rb  1.82s user 0.38s system 100% cpu 2.192 total

pstore.log

% time ruby pstore_bench.rb
ruby pstore_bench.rb  2.29s user 2.65s system 71% cpu 6.955 total
% time ruby pstore_bench.rb
ruby pstore_bench.rb  2.15s user 2.42s system 72% cpu 6.314 total
% time ruby pstore_bench.rb
ruby pstore_bench.rb  2.52s user 2.48s system 71% cpu 7.033 total

pstore_bench.rb

require 'pstore'

p = PStore.new("foo")

p.transaction { p["hoge"] = "hoge" }

10000.times do
  p.transaction { p["hoge"] += "hoge" }
end