Bug ID 620280: Some parts of Portal Access client may cause performance issues on rewritten pages

Last Modified: Sep 13, 2023

Affected Product(s):
BIG-IP APM(all modules)

Known Affected Versions:
11.6.0, 11.6.1, 11.6.2, 11.6.3,,,,, 11.6.4, 11.6.5,,,, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.0, 12.1.1, 12.1.2, 12.1.3,,,,,,,, 12.1.4,, 12.1.5,,,, 12.1.6, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1

Fixed In:

Opened: Oct 03, 2016

Severity: 3-Major


Portal users complain that the page takes a lot of time to load and browser is unresponsive for most of this time. Top entries in the JavaScript profiler are any of following functions: F5_Deflate_index F5_Inflate_index F5_DomainCheck, F5_DomainCheck_IE or F5_DomainCheck_others


Pages take a while to load and browser may show warnings about script execution time.


This can occur through the Access Portal under heavy load.



Fix Information

Now the performance of F5 functions F5_Deflate_index, F5_inflate_index, and F5_DomainCheck is optimized to allow much better web app performance when delivered via Portal Access.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips