Forum Discussion

_pre_'s avatar
_pre_
Icon for Nimbostratus rankNimbostratus
Nov 12, 2012

High Speed Logging - HSL - on TCP vs UDP

Hi,   We are currently sending tons of log via HSL to our splunk server using UDP protocol. The reason we choose UDP is because we think that UDP have less performance impact than using TCP if t...
application delivery
dev
devops
iRules
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Nov 13, 2012
Hi Rianto,

 

 

HSL scales very well to hundreds of thousands of messages per second. I think the overhead for TCP is just slightly above UDP. I personally haven't done much testing to see if there is a big impact on CPU or memory if the HSL destination isn't available. If you try and see any issues, please open a case with F5 Support.

 

 

Also, if you are concerned or do see higher resource utilization, you can check to see if [active_members $hsl_pool] > 0 before attempting to open an HSL connection or send data over a connection.

 

 

Aaron