Bug ID 556162: Default obfuscator configuration causes very slow javascript in some browsers

Last Modified: Oct 10, 2018

Bug Tracker

Affected Product:  See more info
BIG-IP FPS(all modules)

Known Affected Versions:
11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 12.0.0, 12.0.0 HF1, 12.0.0 HF2, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1

Fixed In:
12.1.0, 12.0.0 HF3, 11.6.1 HF1

Opened: Nov 04, 2015
Severity: 3-Major

Symptoms

Slow javascript causes page to render with a slight delay.

Impact

Mainly on older browsers, a slight rendering delay (~1 second) may be noticed.

Conditions

Client on Explorer 8 on a slow machine or VM.

Workaround

Run the following commands on the BIG-IP system: echo "-x" > /shared/datasync/compiler_conf/cs_fpm/OBF_FLAGS chattr +i /shared/datasync/compiler_conf/cs_fpm/OBF_FLAGS

Fix Information

Improved performance of obfuscated javascript.

Behavior Change