Opened 6 years ago

Last modified 5 years ago

#1229 closed defect

MSI compression is suboptimal — at Version 1

Reported by: trev Assignee:
Priority: P3 Milestone:
Module: Adblock-Plus-for-Internet-Explorer Keywords: installer
Cc: eric@…, oleksandr Blocked By:
Blocking: Platform: Internet Explorer
Ready: yes Confidential: no
Tester: Verified working: no
Review URL(s):

Description (last modified by trev)

How to reproduce

  1. Download https://downloads.adblockplus.org/adblockplusie-1.2-x64.msi
  2. Note the file size (4.558.848 bytes).
  3. Now compress that file, e.g. via gzip adblockplusie-1.2-x64.msi
  4. Look at the file size of the compressed file.

Observed behaviour

The size of the compressed file is 3.218.239 bytes, roughly 70% of the original size. This indicates that the compression of our MSI file is very suboptimal - if it is compressed at all. These MSI files are being downloaded for updates and end up wasting lots of bandwidth if they aren't compressed properly.

Expected behaviour

The size of the compressed file should only be minimally smaller, if at all. Note that adblockplusie-1.2.exe apparently applies additional compression - gzip almost doesn't compress it, and its size is only minimally larger than the two MSI files after they have been compressed by gzip.

Change History (1)

comment:1 Changed 6 years ago by trev

  • Description modified (diff)
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