[issue1675951] [gzip] Performance for small reads and fix seek problem

Florian Festi added the comment: I updated the performace script to Py3. You still need to change the import gzipnew line to actually load the modified module. Right now it just compares the stdlib gzip module to itself. -- Added file: http://bugs.python.org/file18916/test_gzip2-py3

[issue1675951] [gzip] Performance for small reads and fix seek problem

Florian Festi added the comment: Attached result of a run with stdlib gzip module only. Results indicate that performance still is as bad as on Python 2. The Python 3 gzip module also still makes use of tell() ans seek(). So both argument for including this patch are still valid. Porting

[issue1675951] Performance for small reads and fix seek problem

Florian Festi added the comment: Stupid me! I ran the tests against my systems gzip version (Py 3.1). The performance issue is basically fixed by rev 77289. Performance is even a bit better that my original patch by may be 10-20%. The only test case where it performs worse is Random

[issue1675951] Performance for small reads and fix seek problem

Changes by Florian Festi : Added file: http://bugs.python.org/file18965/0002-Avoid-the-need-of-seek-ing-on-the-file-read-2.patch ___ Python tracker <http://bugs.python.org/issue1675

[issue1675951] [gzip] Performance for small reads and fix seek problem

Florian Festi added the comment: There are no compatibility concerns I am aware of. The new implementation does no longer need a seek()able file. Of course an implemented seek() method won't hurt anyone. The additional tests are only there to point out the problems of the old implement