Last Modified: Jul 13, 2024
Affected Product(s):
BIG-IP All
Known Affected Versions:
11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.1 HF10, 11.5.1 HF11, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 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, 11.6.1 HF1, 11.6.1 HF2, 11.6.2, 11.6.2 HF1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3
Opened: Aug 19, 2014 Severity: 3-Major Related Article:
K16687
When performing LAN-speed transfers of large files (hundreds of MB) over SSL, or transfers of small ssl records, the throughput speed of the transfer significantly drops if the hardware SSL offloading is performed. The performance drop is from ~30% - ~50% depending on the cipher suite used.
The performance degrades from ~30% - ~50% depending on the cipher suite used.
This issue occurs when hardware SSL offloading is turned on.
To work around this issue, you can modify the High-Speed Bridge (HSB) scheduler. To do so, perform the following procedure: Impact of workaround: Performing the following procedure should not have a negative impact on your system. Modifying the scheduler.hsbpollmode.ltm db key Log in to the Traffic Management Shell (tmsh) by typing the following command: tmsh To set the db key value to always, type the following command: modify /sys db scheduler.hsbpollmode.ltm value always Save the changes by typing the following command: save /sys config
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