[issue27194] Tarfile superfluous truncate calls slows extraction.

Łukasz Langa added the comment: Thanks for the patch, Jason. This is now merged and will be available in 3.5.2 and 3.6. -- resolution: -> fixed status: open -> closed ___ Python tracker __

[issue27194] Tarfile superfluous truncate calls slows extraction.

Roundup Robot added the comment: New changeset b63474aa8a5f by Łukasz Langa in branch '3.5': Issue #27194: superfluous truncate calls in tarfile.py slow down extraction https://hg.python.org/cpython/rev/b63474aa8a5f New changeset a4f918de25e5 by Łukasz Langa in branch 'default': Merge 3.5, issue

[issue27194] Tarfile superfluous truncate calls slows extraction.

Changes by Łukasz Langa : -- assignee: -> lukasz.langa stage: -> patch review ___ Python tracker ___ ___ Python-bugs-list mailing li

[issue27194] Tarfile superfluous truncate calls slows extraction.

Changes by Serhiy Storchaka : -- nosy: +lars.gustaebel ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: https://

[issue27194] Tarfile superfluous truncate calls slows extraction.

Jason Fried added the comment: I ran this on Linux ext4. I didn't see much improvement on OSX with SSD. -- Added file: http://bugs.python.org/file43139/test.py ___ Python tracker __

[issue27194] Tarfile superfluous truncate calls slows extraction.

New submission from Jason Fried: With large tar file extracts I noticed that tarfile was slower than it should be. Seems in linux that for large files (10MB) truncate is not always a free operation even when it should be a no-op. ex: File is already 10mb seek to end and truncate. I created