Here's the output of time measurements on my system: Timing of just opening oowriter: voorburg@tumbleweed:~> time oowriter real 0m4.982s user 0m4.184s sys 0m0.562s Timing with opening of the test file: voorburg@tumbleweed:~> time oowriter ~/Downloads/test.odt real 0m19.993s user 0m3.852s sys 0m0.680s